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PaulStoffregen 0af537f2ca Add TODO for analyze peak optimization 8 yıl önce
examples Add AudioEffectMidSide documentation & example (thanks Hedde Bosman) 9 yıl önce
extras/wav2sketch Rename AudioAnalyzeGuitarTuner to AudioAnalyzeNoteFrequency 9 yıl önce
gui Opps, CSS class "tooltip" has baggage 9 yıl önce
utility rewrite AudioAnalyzeRMS - arm math version doesn't work! 9 yıl önce
.travis.yml Skip unused source files 9 yıl önce
Audio.h Add AudioEffectMidSide documentation & example (thanks Hedde Bosman) 9 yıl önce
AudioControl.h Add AudioSynthWaveformSine 10 yıl önce
README.md remove Travis CI status from readme (it's too unreliable) 8 yıl önce
analyze_fft256.cpp Initial work on FFT256 for Teensy-LC (untested) 9 yıl önce
analyze_fft256.h Fix FFT read range (now inclusive) 9 yıl önce
analyze_fft1024.cpp Fix some Teensy-LC compiler errors 9 yıl önce
analyze_fft1024.h Fix FFT read range (now inclusive) 9 yıl önce
analyze_notefreq.cpp Rename AudioAnalyzeGuitarTuner to AudioAnalyzeNoteFrequency 9 yıl önce
analyze_notefreq.h Rename AudioAnalyzeGuitarTuner to AudioAnalyzeNoteFrequency 9 yıl önce
analyze_peak.cpp Add TODO for analyze peak optimization 8 yıl önce
analyze_peak.h Add readPeakToPeak() to AudioAnalyzePeak 9 yıl önce
analyze_print.cpp Change AudioAnalyzePrint name API 10 yıl önce
analyze_print.h Change AudioAnalyzePrint name API 10 yıl önce
analyze_rms.cpp Don't compile M4 code on LC (but LC still not working) 8 yıl önce
analyze_rms.h rewrite AudioAnalyzeRMS - arm math version doesn't work! 9 yıl önce
analyze_tonedetect.cpp Fix more Teensy-LC compiler errors 9 yıl önce
analyze_tonedetect.h Add MIT license 10 yıl önce
control_ak4558.cpp Fixed control functions, examples, GUI elements 9 yıl önce
control_ak4558.h Fixed control functions, examples, GUI elements 9 yıl önce
control_sgtl5000.cpp Add SGTL5000 dacVolumeRamp functions & example 9 yıl önce
control_sgtl5000.h Add SGTL5000 dacVolumeRamp functions & example 9 yıl önce
control_wm8731.cpp AudioControlWM8731::inputLevel(float n) 9 yıl önce
control_wm8731.h AudioControlWM8731::inputLevel(float n) 9 yıl önce
data_ulaw.c Add missing open source license headers 10 yıl önce
data_waveforms.c Remove old AudioSynthWaveform 10 yıl önce
data_windows.c Add other window types for 1024 point FFT 10 yıl önce
effect_bitcrusher.cpp Fix compiler warning 9 yıl önce
effect_bitcrusher.h Add Bitcrusher effect (thanks Pensive) 9 yıl önce
effect_chorus.cpp Remove debug Serial.print... 8 yıl önce
effect_chorus.h remove unimplemented stop() 10 yıl önce
effect_delay.cpp Remove unused multiplier 10 yıl önce
effect_delay.h Add AudioEffectDelay 10 yıl önce
effect_delay_ext.cpp Add support for Frank's 6-chip Memoryboard4 (AUDIO_MEMORY_MEMORYBOARD) 9 yıl önce
effect_delay_ext.h Add support for Frank's 6-chip Memoryboard4 (AUDIO_MEMORY_MEMORYBOARD) 9 yıl önce
effect_envelope.cpp Add AudioEffectEnvelope 10 yıl önce
effect_envelope.h Add AudioEffectEnvelope 10 yıl önce
effect_fade.cpp Add MIT license 10 yıl önce
effect_fade.h Add MIT license 10 yıl önce
effect_flange.cpp Change Flange effect to one channel 10 yıl önce
effect_flange.h remove unimplemented stop() 10 yıl önce
effect_midside.cpp Don't compile M4 code on LC (but LC still not working) 8 yıl önce
effect_midside.h Add AudioEffectMidSide (thanks Hedde Bosman) 9 yıl önce
effect_multiply.cpp Fix more Teensy-LC compiler errors 9 yıl önce
effect_multiply.h Add AudioEffectMultiply 10 yıl önce
filter_biquad.cpp Fix more Teensy-LC compiler errors 9 yıl önce
filter_biquad.h Improve Biquad filter 10 yıl önce
filter_fir.cpp Impove and document FIR filter 10 yıl önce
filter_fir.h Impove and document FIR filter 10 yıl önce
filter_fir.md Change FIR filter (as suggested by rheslip) to filter one channel instead of two. Updated example, added documenting file 10 yıl önce
filter_variable.cpp Fix more Teensy-LC compiler errors 9 yıl önce
filter_variable.h Finish AudioFilterStateVariable (signal control of corner frequency) 10 yıl önce
input_adc.cpp Fix some Teensy-LC compiler errors 9 yıl önce
input_adc.h Fix AudioInputAnalog 10 yıl önce
input_i2s.cpp Fix more Teensy-LC compiler errors 9 yıl önce
input_i2s.h Use DMAChannel begin() 10 yıl önce
keywords.txt Add AudioEffectMidSide (thanks Hedde Bosman) 9 yıl önce
library.json Handle all nested examples 9 yıl önce
library.properties Increase to version 1.03 9 yıl önce
memcpy_audio.S Optimize I2S output memory copy (thanks Frank Bösing) 8 yıl önce
memcpy_audio.h Optimize I2S output memory copy (thanks Frank Bösing) 8 yıl önce
mixer.cpp Fix some Teensy-LC compiler errors 9 yıl önce
mixer.h Allow negative/inverting mixer gain 9 yıl önce
multiplier.md Add a multiplier (by rheslip) 10 yıl önce
new_objects.md change format for new_objects files 11 yıl önce
output_dac.cpp Initial work on DAC for Teensy-LC (still incomplete) 9 yıl önce
output_dac.h Initial work on DAC for Teensy-LC (still incomplete) 9 yıl önce
output_i2s.cpp Optimize I2S output memory copy (thanks Frank Bösing) 8 yıl önce
output_i2s.h Use DMAChannel begin() 10 yıl önce
output_pwm.cpp Fix more Teensy-LC compiler errors 9 yıl önce
output_pwm.h Make input ADC and output DAC play nicely together 10 yıl önce
output_spdif.cpp Fix more Teensy-LC compiler errors 9 yıl önce
output_spdif.h Add keywords 9 yıl önce
play_memory.cpp Add status and position functions to AudioPlayMemory 10 yıl önce
play_memory.h Add status and position functions to AudioPlayMemory 10 yıl önce
play_queue.cpp do not forget - your own addition :-) 10 yıl önce
play_queue.h do not forget - your own addition :-) 10 yıl önce
play_sd_raw.cpp Do not disable all interrupts while opening RAW files 9 yıl önce
play_sd_raw.h Fix status functions in AudioPlaySdRaw 10 yıl önce
play_sd_wav.cpp Fix stereo WAV file startup & end (first and last 3 milliseconds) 9 yıl önce
play_sd_wav.h Fix audible click at end of Wav file playing 10 yıl önce
play_serialflash_raw.cpp remove leftover debug code from AudioPlaySerialflashRaw 9 yıl önce
play_serialflash_raw.h Add AudioPlaySerialflashRaw 9 yıl önce
record_queue.cpp Fix harmless compiler warnings in AudioRecordQueue 10 yıl önce
record_queue.h Finish AudioRecordQueue and Record example 10 yıl önce
spi_interrupt.cpp Add SPI interrupt registration layer 10 yıl önce
spi_interrupt.h register SPI interrupt when playing WAV & RAW files 10 yıl önce
synth_dc.cpp Add AudioSynthWaveformDc 10 yıl önce
synth_dc.h simplify overflow checks somewhat 10 yıl önce
synth_pinknoise.cpp Clean up harmless compiler warnings 10 yıl önce
synth_pinknoise.h Add AudioSynthNoisePink 10 yıl önce
synth_sine.cpp Oops, transmit the hires sine low bits properly 9 yıl önce
synth_sine.h Add AudioSynthWaveformSineHires - High Precision Sine Wave 9 yıl önce
synth_tonesweep.cpp Fix up synth_tonesweep and the example to conform (more closely) to the naming conventions 10 yıl önce
synth_tonesweep.h Clean up harmless compiler warnings 10 yıl önce
synth_waveform.cpp #144: Add the reverse sawtooth and sample-and-hold waveforms. 9 yıl önce
synth_waveform.h #144: Add the reverse sawtooth and sample-and-hold waveforms. 9 yıl önce
synth_waveform.md Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave. 10 yıl önce
synth_whitenoise.cpp Fix more Teensy-LC compiler errors 9 yıl önce
synth_whitenoise.h Fix multiple white noise instances 10 yıl önce

README.md

Teensy Audio Library

16 bit, 44.1 kHz streaming audio library for Teensy 3.x, featuring:

  • Polyphonic Playback
  • Recording
  • Synthesis
  • Analysis
  • Effects
  • Filtering
  • Mixing
  • Multiple Simultaneous Inputs & Outputs
  • Flexible signal routing between library objects
  • Automatic Streaming while your Arduino sketch runs

Main Audio Library Page

http://www.pjrc.com/teensy/td_libs_Audio.html

Audio System Design Tool

Use this graphical tool to design your audio project. Easily browse the library’s many features, connect objects, export to Arduino code, and quickly access details for the functions each object provides for you to control it from your Arduino sketch!

http://www.pjrc.com/teensy/gui/

Supported Hardware

Audio Adaptor Board for 16 bit stereo input and output.

Inputs Outputs

Teensy 3.1 12 bit DAC

DAC Output

Teensy 3.1 or 3.0 ADC Input

ADC Input

Teensy 3.1 or 3.0 PWM Output

PWM Output