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PaulStoffregen 9bcfe36a21 Add Delay example il y a 10 ans
examples Add Delay example il y a 10 ans
gui Add Delay example il y a 10 ans
utility Make input ADC and output DAC play nicely together il y a 10 ans
Audio.h Add AudioRecordQueue (work in progress) il y a 10 ans
AudioControl.h Add AudioSynthWaveformSine il y a 10 ans
README.md Update readme still yet again il y a 10 ans
analyze_fft256.cpp Add proper API to FFT objects il y a 10 ans
analyze_fft256.h Simplify & document SGTL5000 control il y a 10 ans
analyze_fft1024.cpp Add proper API to FFT objects il y a 10 ans
analyze_fft1024.h Add proper API to FFT objects il y a 10 ans
analyze_peak.cpp Change peak detect API to conform to library conventions il y a 10 ans
analyze_peak.h Change peak detect API to conform to library conventions il y a 10 ans
analyze_print.cpp Change AudioAnalyzePrint name API il y a 10 ans
analyze_print.h Change AudioAnalyzePrint name API il y a 10 ans
analyze_tonedetect.cpp mode documentation in the GUI il y a 10 ans
analyze_tonedetect.h Add MIT license il y a 10 ans
control_sgtl5000.cpp Simplify & document SGTL5000 control il y a 10 ans
control_sgtl5000.h Document sgtl5000 il y a 10 ans
control_wm8731.cpp Update WM8731 example il y a 10 ans
control_wm8731.h Update WM8731 example il y a 10 ans
data_ulaw.c Add missing open source license headers il y a 10 ans
data_waveforms.c Remove old AudioSynthWaveform il y a 10 ans
data_windows.c Add other window types for 1024 point FFT il y a 10 ans
effect_chorus.cpp Change Chrous effect to one channel il y a 10 ans
effect_chorus.h remove unimplemented stop() il y a 10 ans
effect_delay.cpp Remove unused multiplier il y a 10 ans
effect_delay.h Add AudioEffectDelay il y a 10 ans
effect_envelope.cpp Add AudioEffectEnvelope il y a 10 ans
effect_envelope.h Add AudioEffectEnvelope il y a 10 ans
effect_fade.cpp Add MIT license il y a 10 ans
effect_fade.h Add MIT license il y a 10 ans
effect_flange.cpp Change Flange effect to one channel il y a 10 ans
effect_flange.h remove unimplemented stop() il y a 10 ans
effect_multiply.cpp Add AudioEffectMultiply il y a 10 ans
effect_multiply.h Add AudioEffectMultiply il y a 10 ans
filter_biquad.cpp Improve Biquad filter il y a 10 ans
filter_biquad.h Improve Biquad filter il y a 10 ans
filter_fir.cpp Impove and document FIR filter il y a 10 ans
filter_fir.h Impove and document FIR filter il y a 10 ans
filter_fir.md Change FIR filter (as suggested by rheslip) to filter one channel instead of two. Updated example, added documenting file il y a 10 ans
filter_variable.cpp Add credits/references for numerical approximation algorithms il y a 10 ans
filter_variable.h Finish AudioFilterStateVariable (signal control of corner frequency) il y a 10 ans
input_adc.cpp Remove old debugging stuff from AudioInputAnalog il y a 10 ans
input_adc.h Allow AudioInputAnalog to use different pins il y a 10 ans
input_i2s.cpp Avoid allocating unneeded DMA channels il y a 10 ans
input_i2s.h Use DMAChannel begin() il y a 10 ans
keywords.txt Improve Biquad filter il y a 10 ans
mixer.cpp Add MIT license il y a 10 ans
mixer.h Add MIT license il y a 10 ans
multiplier.md Add a multiplier (by rheslip) il y a 10 ans
new_objects.md change format for new_objects files il y a 11 ans
output_dac.cpp Avoid allocating unneeded DMA channels il y a 10 ans
output_dac.h Use DMAChannel begin() il y a 10 ans
output_i2s.cpp Avoid allocating unneeded DMA channels il y a 10 ans
output_i2s.h Use DMAChannel begin() il y a 10 ans
output_pwm.cpp Avoid allocating unneeded DMA channels il y a 10 ans
output_pwm.h Make input ADC and output DAC play nicely together il y a 10 ans
play_memory.cpp Add status and position functions to AudioPlayMemory il y a 10 ans
play_memory.h Add status and position functions to AudioPlayMemory il y a 10 ans
play_queue.cpp Add AudioPlayQueue il y a 10 ans
play_queue.h Add AudioPlayQueue il y a 10 ans
play_sd_raw.cpp register SPI interrupt when playing WAV & RAW files il y a 10 ans
play_sd_raw.h Fix status functions in AudioPlaySdRaw il y a 10 ans
play_sd_wav.cpp WAV header parse for 44100 il y a 10 ans
play_sd_wav.h Fix audible click at end of Wav file playing il y a 10 ans
record_queue.cpp Finish AudioRecordQueue and Record example il y a 10 ans
record_queue.h Finish AudioRecordQueue and Record example il y a 10 ans
spi_interrupt.cpp Add SPI interrupt registration layer il y a 10 ans
spi_interrupt.h register SPI interrupt when playing WAV & RAW files il y a 10 ans
synth_dc.cpp Add AudioSynthWaveformDc il y a 10 ans
synth_dc.h simplify overflow checks somewhat il y a 10 ans
synth_pinknoise.cpp Clean up harmless compiler warnings il y a 10 ans
synth_pinknoise.h Add AudioSynthNoisePink il y a 10 ans
synth_sine.cpp Add MemoryAndCpuUsage example il y a 10 ans
synth_sine.h Add phase() to waveform objects il y a 10 ans
synth_tonesweep.cpp Fix up synth_tonesweep and the example to conform (more closely) to the naming conventions il y a 10 ans
synth_tonesweep.h Clean up harmless compiler warnings il y a 10 ans
synth_waveform.cpp Add simple pulse waveform il y a 10 ans
synth_waveform.h Clean up harmless compiler warnings il y a 10 ans
synth_waveform.md Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave. il y a 10 ans
synth_whitenoise.cpp Fix multiple white noise instances il y a 10 ans
synth_whitenoise.h Fix multiple white noise instances il y a 10 ans

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