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@@ -395,10 +395,12 @@ span.mainfunction {color: #993300; font-weight: bolder} |
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<script type="text/x-red" data-help-name="AudioInputI2S"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Receive 16 bit stereo audio from the |
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<a href="http://www.pjrc.com/store/teensy3_audio.html" target="_blank">audio shield</a> |
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or another I2S device, using I2S master mode.</p> |
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<p align=center><img src="img/audioshield_inputs.jpg"></p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -459,7 +461,9 @@ span.mainfunction {color: #993300; font-weight: bolder} |
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<script type="text/x-red" data-help-name="AudioInputAnalog"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Receive audio using the built-in analog to digital converter.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -504,7 +508,9 @@ span.mainfunction {color: #993300; font-weight: bolder} |
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<script type="text/x-red" data-help-name="AudioInputI2Sslave"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Receive 16 bit stereo audio from an I2S device using I2S slave mode.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -547,10 +553,12 @@ span.mainfunction {color: #993300; font-weight: bolder} |
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<script type="text/x-red" data-help-name="AudioOutputI2S"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Transmit 16 bit stereo audio to the |
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<a href="http://www.pjrc.com/store/teensy3_audio.html" target="_blank">audio shield</a> |
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or another I2S device, using I2S master mode.</p> |
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<p align=center><img src="img/audioshield_outputs.jpg"></p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -604,8 +612,10 @@ span.mainfunction {color: #993300; font-weight: bolder} |
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<script type="text/x-red" data-help-name="AudioOutputSPDIF"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Transmit 16 bit stereo audio as Digital S/PDIF.</p> |
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<p align=center><img src="img/spdif_proto.jpg"></p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -655,7 +665,9 @@ span.mainfunction {color: #993300; font-weight: bolder} |
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<script type="text/x-red" data-help-name="AudioOutputAnalog"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Transmit 12 bit audio using Teensy 3.1's built-in digital to analog converter.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -689,9 +701,11 @@ span.mainfunction {color: #993300; font-weight: bolder} |
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<script type="text/x-red" data-help-name="AudioOutputPWM"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Transmit audio using Teensy 3.1's PWM pins. Two pins are |
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used for coarse and fine pulses, to be combined by scaled |
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resistors.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -737,7 +751,9 @@ span.mainfunction {color: #993300; font-weight: bolder} |
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<script type="text/x-red" data-help-name="AudioOutputI2Sslave"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Transmit 16 bit stereo audio to an I2S device using I2S slave mode.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -778,8 +794,10 @@ span.mainfunction {color: #993300; font-weight: bolder} |
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<script type="text/x-red" data-help-name="AudioMixer4"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Combine up to 4 audio signals together, each with adjustable gain. |
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All channels support signal attenuation or amplification.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -825,10 +843,12 @@ span.mainfunction {color: #993300; font-weight: bolder} |
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<script type="text/x-red" data-help-name="AudioPlayMemory"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Play a short sound clip, stored directly in memory. |
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Data files are created with the |
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<a href="https://github.com/PaulStoffregen/Audio/tree/master/examples/SamplePlayer/wav2sketch" target="_blank">wav2sketch program</a>, |
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and copied to the sketch folder to become part of your sketch.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -875,7 +895,9 @@ span.mainfunction {color: #993300; font-weight: bolder} |
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<script type="text/x-red" data-help-name="AudioPlaySdWav"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Play a WAV file, stored on a SD card.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -936,9 +958,11 @@ span.mainfunction {color: #993300; font-weight: bolder} |
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<script type="text/x-red" data-help-name="AudioPlaySdRaw"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Play a RAW data file, stored on a SD card. RAW format is simpler |
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than WAV and begins playing immediately, without parsing WAV file |
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header info.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -989,7 +1013,7 @@ span.mainfunction {color: #993300; font-weight: bolder} |
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<script type="text/x-red" data-help-name="AudioPlaySerialflashRaw"> |
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<h3>Summary</h3> |
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<div> |
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<div class=tooltip> |
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<p>Play a RAW data file, stored on a Serial Flash chip. These chips |
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are far more efficient than SD cards, allowing many files to be |
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played simultaneously by copies of this object. |
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@@ -1051,8 +1075,10 @@ span.mainfunction {color: #993300; font-weight: bolder} |
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<script type="text/x-red" data-help-name="AudioPlayQueue"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Play audio data provided by the Arduino sketch. This object provides |
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functions to allow the sketch code to push data into the audio system.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -1098,8 +1124,10 @@ span.mainfunction {color: #993300; font-weight: bolder} |
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<script type="text/x-red" data-help-name="AudioRecordQueue"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Record audio data by sending to the Arduino sketch. This object allows |
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sketch code to receive audio packets.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -1154,7 +1182,9 @@ The actual packets are taken |
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<script type="text/x-red" data-help-name="AudioSynthWaveformSine"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Create a sine wave signal</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -1196,8 +1226,10 @@ The actual packets are taken |
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<script type="text/x-red" data-help-name="AudioSynthWaveformSineHires"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Create a highly precise, low distortion sine wave signal. |
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Mainly useful for codec & analog circuitry testing.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -1235,8 +1267,10 @@ The actual packets are taken |
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<script type="text/x-red" data-help-name="AudioSynthWaveformSineModulated"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Create a modulated sine wave, using any audio signal to continuously |
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modulate the sine wave frequency.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -1279,7 +1313,9 @@ The actual packets are taken |
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<script type="text/x-red" data-help-name="AudioSynthWaveform"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Create a waveform: sine, sawtooth, square, triangle, pulse or arbitrary.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -1347,7 +1383,9 @@ The actual packets are taken |
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<script type="text/x-red" data-help-name="AudioSynthToneSweep"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Create a continuously varying (in frequency) sine wave</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -1376,9 +1414,11 @@ The actual packets are taken |
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<script type="text/x-red" data-help-name="AudioSynthWaveformDc"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Create constant (DC) signal, useful for control of objects that take |
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a modulation or control input signal. This constant level can be |
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used to modify other waveforms using mixer or multiplier objects</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -1414,7 +1454,7 @@ The actual packets are taken |
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<script type="text/x-red" data-help-name="AudioSynthNoiseWhite"> |
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<h3>Summary</h3> |
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<div> |
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<div class=tooltip> |
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<p>Create white noise. |
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</p> |
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<p align=center><img src="img/whitenoise.png"></p> |
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@@ -1447,7 +1487,7 @@ The actual packets are taken |
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<script type="text/x-red" data-help-name="AudioSynthNoisePink"> |
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<h3>Summary</h3> |
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<div> |
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<div class=tooltip> |
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<p>Create pink noise, using Stefan Stenzel's "New Shade Of Pink" algorithm. |
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</p> |
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<!-- |
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@@ -1487,7 +1527,9 @@ The actual packets are taken |
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<script type="text/x-red" data-help-name="AudioEffectFade"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Gradually increase or decrease audio level.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -1531,11 +1573,13 @@ The actual packets are taken |
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<script type="text/x-red" data-help-name="AudioEffectChorus"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>The chorus effect simulates the richness of several nearly-identical |
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sound sources (like the way a choir sounds different to a single singer). |
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It does this by sampling from a delay line, so each voice is actually |
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the same but at a slightly different point in time. This is a type of |
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comb filtering.</p> |
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</div> |
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<p>Chorus combines one or more samples ranging from the most recent |
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sample back to about 50ms ago. The additional samples are evenly spread |
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through the supplied delay line, and there is no modulation.</p> |
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@@ -1580,11 +1624,13 @@ The actual packets are taken |
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<script type="text/x-red" data-help-name="AudioEffectFlange"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Originally, flanging was produced by playing the same signal on two synchronized |
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reel-to-reel tape recorders and making one of the reels slow down and speed up by |
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pressing on the flange of the reel (hence the name). This is a type of |
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comb filtering, and produces a harmonically-related series of peaks and notches |
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in the audio spectrum.</p> |
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</div> |
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<p>This flanger uses a delay line, combining the original voice with only one sample from the delay |
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line, but the position of that sample varies sinusoidally.</p> |
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<p>The effect can be represented as:<br> |
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@@ -1640,7 +1686,7 @@ double s_freq = .0625;</p> |
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<script type="text/x-red" data-help-name="AudioEffectEnvelope"> |
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<h3>Summary</h3> |
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<div> |
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<div class=tooltip> |
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<p>Modify a signal with a DAHDSR (Delay Attack Hold Decay Sustain |
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Release) envelope. |
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</p> |
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@@ -1704,7 +1750,7 @@ double s_freq = .0625;</p> |
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<script type="text/x-red" data-help-name="AudioEffectMultiply"> |
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<h3>Summary</h3> |
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<div> |
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<div class=tooltip> |
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<p>Multiply two signals together, useful for amplitude modulation |
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or "voltage controlled amplification". |
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</p> |
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@@ -1740,7 +1786,7 @@ double s_freq = .0625;</p> |
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<script type="text/x-red" data-help-name="AudioEffectDelay"> |
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<h3>Summary</h3> |
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<div> |
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<div class=tooltip> |
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<p>Delay a signal. Up to 8 separate delay taps can be used.</p> |
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<p align=center><img src="img/delay.png"><br><small>1 kHz burst, delayed 5.2 ms.</small></p> |
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</div> |
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@@ -1789,7 +1835,7 @@ double s_freq = .0625;</p> |
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<script type="text/x-red" data-help-name="AudioEffectDelayExternal"> |
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<h3>Summary</h3> |
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<div> |
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<div class=tooltip> |
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<p>Delay a signal, using external memory for longer delay times! Up to 8 separate delay taps can be used.</p> |
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<p align=center><img src="img/delay.png"><br><small>1 kHz burst, delayed 5.2 ms.</small></p> |
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</div> |
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@@ -1891,8 +1937,10 @@ double s_freq = .0625;</p> |
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<script type="text/x-red" data-help-name="AudioEffectBitcrusher"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Reduce the samplerate and/or bitdepth of a source signal, resulting in |
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a distorted sound.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -1936,9 +1984,11 @@ double s_freq = .0625;</p> |
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<script type="text/x-red" data-help-name="AudioEffectMidSide"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Convert stereo signals to/from Mid-Side format. |
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Mid-Side encoding can be used to increase stereo width, make the lower |
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frequencies mono (to please your sub), or as the basis of audio compression.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>While<br>Encoding</th><th>While<br>Decoding</th></tr> |
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@@ -1976,7 +2026,7 @@ double s_freq = .0625;</p> |
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<script type="text/x-red" data-help-name="AudioFilterBiquad"> |
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<h3>Summary</h3> |
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<div> |
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<div class=tooltip> |
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<p>Biquadratic cascaded filter, useful for all sorts of filtering. |
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Up to 4 stages may be cascaded. |
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</p> |
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@@ -2040,7 +2090,7 @@ double s_freq = .0625;</p> |
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<script type="text/x-red" data-help-name="AudioFilterFIR"> |
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<h3>Summary</h3> |
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<div> |
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<div class=tooltip> |
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<p>Finite impulse response filter, useful for all sorts of filtering. |
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</p> |
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<p align=center><img src="img/fir_filter.png"></p> |
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@@ -2092,9 +2142,11 @@ double s_freq = .0625;</p> |
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<script type="text/x-red" data-help-name="AudioFilterStateVariable"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>A State Variable (Chamberlin) Filter with 12 dB/octave roll-off, |
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adjustable resonance, and optional signal control of corner |
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frequency.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -2151,8 +2203,10 @@ double s_freq = .0625;</p> |
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<script type="text/x-red" data-help-name="AudioAnalyzePeak"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Track the signal peak amplitude. Very useful for simple |
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audio level response projects, and general troubleshooting.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -2187,8 +2241,10 @@ double s_freq = .0625;</p> |
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<script type="text/x-red" data-help-name="AudioAnalyzeRMS"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Track the signal RMS amplitude. Useful for |
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audio level response projects, and general troubleshooting.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -2217,9 +2273,11 @@ double s_freq = .0625;</p> |
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<script type="text/x-red" data-help-name="AudioAnalyzeFFT256"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Compute a 256 point Fast Fourier Transform (FFT) frequency analysis, |
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with real value (magnitude) output. The frequency resolution is |
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172 Hz, useful for simple audio visualization.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -2282,9 +2340,11 @@ double s_freq = .0625;</p> |
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<script type="text/x-red" data-help-name="AudioAnalyzeFFT1024"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Compute a 1024 point Fast Fourier Transform (FFT) frequency analysis, |
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with real value (magnitude) output. The frequency resolution is |
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43 Hz, useful detailed for audio visualization.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -2351,7 +2411,9 @@ double s_freq = .0625;</p> |
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<script type="text/x-red" data-help-name="AudioAnalyzeToneDetect"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Detect the level of a single tone</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -2405,8 +2467,10 @@ double s_freq = .0625;</p> |
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<script type="text/x-red" data-help-name="AudioAnalyzeNoteFrequency"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Detect with fairly good accuracy the fundamental frequency f<sub>o</sub> |
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of musical notes, such as electric guitar and bass.</p> |
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</div> |
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<p>Written By Collin Duffy</p> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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@@ -2460,8 +2524,10 @@ double s_freq = .0625;</p> |
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<script type="text/x-red" data-help-name="AudioAnalyzePrint"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Print raw audio data to the Arduino Serial Monitor. This |
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object creates massive output quickly, and should not normally be used.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<table class=doc align=center cellpadding=3> |
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<tr class=top><th>Port</th><th>Purpose</th></tr> |
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@@ -2500,12 +2566,14 @@ double s_freq = .0625;</p> |
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<script type="text/x-red" data-help-name="AudioControlSGTL5000"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Control the SGTL5000 chip on the |
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<a href="http://www.pjrc.com/store/teensy3_audio.html" target="_blank">audio shield</a>. |
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SGTL5000 is always used in slave mode, where Teensy controls |
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all I2S timing. |
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</p> |
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<p align=center><img src="img/sgtl5000closeup.jpg"></p> |
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</div> |
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<h3>Audio Connections</h3> |
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<p>This object has no audio inputs or outputs. Separate i2s objects |
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are used to send and receive audio data. I2S master mode objects |
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@@ -2848,7 +2916,9 @@ value frequency |
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<script type="text/x-red" data-help-name="AudioControlWM8731"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Control a WM8731 chip in slave mode, where it receives all clocks from Teensy</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<p>This object has no audio inputs or outputs. Separate i2s objects |
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are used to send and receive audio data. I2S master mode objects |
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@@ -2888,7 +2958,9 @@ value frequency |
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<script type="text/x-red" data-help-name="AudioControlWM8731master"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Control a WM8731 chip in master mode, where it controls all I2S timing.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<p>This object has no audio inputs or outputs. Separate i2s objects |
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are used to send and receive audio data. I2S slave mode objects |
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@@ -2926,8 +2998,10 @@ value frequency |
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<script type="text/x-red" data-help-name="AudioControlAK4558"> |
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<h3>Summary</h3> |
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<div class=tooltip> |
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<p>Control the AK4558 chip on the <a href="https://hackaday.io/project/8567-hifi-audio-codec-module" target="_blank">HiFi Audio CODEC Module</a> |
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in slave mode, where the Teensy controls all I2S timing.</p> |
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</div> |
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<h3>Audio Connections</h3> |
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<p>This object has no audio inputs or outputs. Separate I2S objects |
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are used to send and receive audio data. |