PaulStoffregen
10 years ago
4 changed files with 0 additions and 128 deletions
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Audio.h
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| #define AudioNoInterrupts() (NVIC_DISABLE_IRQ(IRQ_SOFTWARE)) | #define AudioNoInterrupts() (NVIC_DISABLE_IRQ(IRQ_SOFTWARE)) | ||||
| #define AudioInterrupts() (NVIC_ENABLE_IRQ(IRQ_SOFTWARE)) | #define AudioInterrupts() (NVIC_ENABLE_IRQ(IRQ_SOFTWARE)) | ||||
| // include all the library headers, so a sketch can use a single | // include all the library headers, so a sketch can use a single | ||||
| // #include <Audio.h> to get the whole library | // #include <Audio.h> to get the whole library | ||||
| // | // | ||||
| #include "synth_dc.h" | #include "synth_dc.h" | ||||
| #include "synth_whitenoise.h" | #include "synth_whitenoise.h" | ||||
| #include "synth_pinknoise.h" | #include "synth_pinknoise.h" | ||||
| #include "multiplier.h" | |||||
| // TODO: more audio processing objects.... | // TODO: more audio processing objects.... | ||||
| // sine wave with frequency modulation (phase) | |||||
| // waveforms with bandwidth limited tables for synth | // waveforms with bandwidth limited tables for synth | ||||
| // envelope: attack-decay-sustain-release, maybe other more complex? | |||||
| #endif | #endif |
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effect_delay.cpp
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| } | } | ||||
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multiplier.cpp
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| /* Audio Library for Teensy 3.X | |||||
| * Copyright (c) 2014, Paul Stoffregen, paul@pjrc.com | |||||
| * rheslip - modified Paul's mixer code to prduce a multiplier | |||||
| * Development of this audio library was funded by PJRC.COM, LLC by sales of | |||||
| * Teensy and Audio Adaptor boards. Please support PJRC's efforts to develop | |||||
| * open source software by purchasing Teensy or other PJRC products. | |||||
| * | |||||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | |||||
| * of this software and associated documentation files (the "Software"), to deal | |||||
| * in the Software without restriction, including without limitation the rights | |||||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |||||
| * copies of the Software, and to permit persons to whom the Software is | |||||
| * furnished to do so, subject to the following conditions: | |||||
| * | |||||
| * The above copyright notice, development funding notice, and this permission | |||||
| * notice shall be included in all copies or substantial portions of the Software. | |||||
| * | |||||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |||||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |||||
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |||||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |||||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |||||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |||||
| * THE SOFTWARE. | |||||
| */ | |||||
| #include "multiplier.h" | |||||
| // Multiply two inputs | |||||
| void AudioMultiplier2::update(void) | |||||
| { | |||||
| audio_block_t *in, *out=NULL; | |||||
| unsigned int i; | |||||
| if (!out) { | |||||
| out = receiveWritable(0); // first input - we'll use it as the output too | |||||
| if (out) { | |||||
| in = receiveReadOnly(1); // second input | |||||
| if (in) { | |||||
| int16_t * input1 = (int16_t *)out->data; | |||||
| const int16_t * input2 = (int16_t *)in->data; | |||||
| for (i=0; i < AUDIO_BLOCK_SAMPLES; ++i) { | |||||
| int32_t tmp =*input1 * *input2++; | |||||
| //PAH change the scale to 15 | |||||
| *input1++= (int16_t)(tmp>>15); | |||||
| } | |||||
| release(in); | |||||
| } | |||||
| } | |||||
| } | |||||
| if (out) { | |||||
| transmit(out); | |||||
| release(out); | |||||
| } | |||||
| } | |||||
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multiplier.h
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| /* Audio Library for Teensy 3.X | |||||
| * Copyright (c) 2014, Paul Stoffregen, paul@pjrc.com | |||||
| * | |||||
| * Development of this audio library was funded by PJRC.COM, LLC by sales of | |||||
| * Teensy and Audio Adaptor boards. Please support PJRC's efforts to develop | |||||
| * open source software by purchasing Teensy or other PJRC products. | |||||
| * | |||||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | |||||
| * of this software and associated documentation files (the "Software"), to deal | |||||
| * in the Software without restriction, including without limitation the rights | |||||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |||||
| * copies of the Software, and to permit persons to whom the Software is | |||||
| * furnished to do so, subject to the following conditions: | |||||
| * | |||||
| * The above copyright notice, development funding notice, and this permission | |||||
| * notice shall be included in all copies or substantial portions of the Software. | |||||
| * | |||||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |||||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |||||
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |||||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |||||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |||||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |||||
| * THE SOFTWARE. | |||||
| */ | |||||
| #ifndef multiplier_h_ | |||||
| #define multiplier_h_ | |||||
| #include "AudioStream.h" | |||||
| class AudioMultiplier2 : | |||||
| public AudioStream | |||||
| { | |||||
| public: | |||||
| AudioMultiplier2(void) : | |||||
| AudioStream(2, inputQueueArray) { | |||||
| // for (int i=0; i<2; i++) multiplier[i] = 65536; | |||||
| } | |||||
| virtual void update(void); | |||||
| /* void gain(unsigned int channel, float gain) { | |||||
| if (channel >= 4) return; | |||||
| if (gain > 32767.0f) gain = 32767.0f; | |||||
| else if (gain < 0.0f) gain = 0.0f; | |||||
| multiplier[channel] = gain * 65536.0f; // TODO: proper roundoff? | |||||
| } | |||||
| */ | |||||
| private: | |||||
| // int32_t multiplier[2]; | |||||
| audio_block_t *inputQueueArray[2]; | |||||
| }; | |||||
| #endif | |||||
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