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PaulStoffregen f6b809e572 Fix missing DSP instruction alternates on Teensy LC il y a 4 ans
docs Add issue template il y a 6 ans
examples Add Vocoder19Band example from Bradley Sanders il y a 4 ans
extras Improve wav2sketch parsing of WAV files with junk sections il y a 6 ans
gui Gui: finally: Fix reload issue il y a 4 ans
utility Fix missing DSP instruction alternates on Teensy LC il y a 4 ans
.gitignore Add documentation for new objects il y a 8 ans
.travis.yml Update Travis CI settings il y a 8 ans
Audio.h Add rectifier effect il y a 4 ans
AudioControl.h Add AudioSynthWaveformSine il y a 10 ans
Quantizer.cpp async spdif input added il y a 4 ans
Quantizer.h async spdif input added il y a 4 ans
README.md Update readme il y a 7 ans
Resampler.cpp async spdif input added il y a 4 ans
Resampler.h async spdif input added il y a 4 ans
analyze_fft256.cpp Include Arduino.h first in all cpp files, for precompiled header speedup il y a 6 ans
analyze_fft256.h Fix problem with optimized loops like do {} while (!myFFT.available()); il y a 7 ans
analyze_fft1024.cpp Import all of Frank's T4 edits il y a 5 ans
analyze_fft1024.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
analyze_notefreq.cpp Include Arduino.h first in all cpp files, for precompiled header speedup il y a 6 ans
analyze_notefreq.h NoteFrequency fixes il y a 8 ans
analyze_peak.cpp Include Arduino.h first in all cpp files, for precompiled header speedup il y a 6 ans
analyze_peak.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
analyze_print.cpp Include Arduino.h first in all cpp files, for precompiled header speedup il y a 6 ans
analyze_print.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
analyze_rms.cpp Import all of Frank's T4 edits il y a 5 ans
analyze_rms.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
analyze_tonedetect.cpp Import all of Frank's T4 edits il y a 5 ans
analyze_tonedetect.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
async_input_spdif3.cpp async spdif input added il y a 4 ans
async_input_spdif3.h default constructor arguments il y a 4 ans
biquad.h async spdif input added il y a 4 ans
control_ak4558.cpp Include Arduino.h first in all cpp files, for precompiled header speedup il y a 6 ans
control_ak4558.h Fixed control functions, examples, GUI elements il y a 9 ans
control_cs4272.cpp Include Arduino.h first in all cpp files, for precompiled header speedup il y a 6 ans
control_cs4272.h Add CS4272 control (thanks William Hollender) il y a 8 ans
control_cs42448.cpp Add comment about strange CS42448 issue and undocumented bit il y a 5 ans
control_cs42448.h Add AudioControlCS42448 il y a 7 ans
control_sgtl5000.cpp Fix CHIP_I2S_CTRL on Init (SCLK=32*fs -> 64*fs) il y a 4 ans
control_sgtl5000.h Add ability to control two SGTL5000 chips il y a 8 ans
control_tlv320aic3206.cpp AIC3206: rename channel macros, add comments il y a 6 ans
control_tlv320aic3206.h AIC3206: rename channel macros, add comments il y a 6 ans
control_wm8731.cpp WM8731 has flaky I2C communication workaround il y a 5 ans
control_wm8731.h Add WM8731 inputSelect() function and update example il y a 6 ans
data_spdif.c use common spdif bcmlookup table il y a 5 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_bitcrusher.cpp Include Arduino.h first in all cpp files, for precompiled header speedup il y a 6 ans
effect_bitcrusher.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
effect_chorus.cpp Include Arduino.h first in all cpp files, for precompiled header speedup il y a 6 ans
effect_chorus.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
effect_combine.cpp Add AudioEffectDigitalCombine (from Bleep Labs) il y a 6 ans
effect_combine.h Move combine effect constants to class enum, not global scope il y a 6 ans
effect_delay.cpp Include Arduino.h first in all cpp files, for precompiled header speedup il y a 6 ans
effect_delay.h Allow longer max delay effect on Teensy 4.0 il y a 5 ans
effect_delay_ext.cpp Include Arduino.h first in all cpp files, for precompiled header speedup il y a 6 ans
effect_delay_ext.h Add F-RAM il y a 7 ans
effect_envelope.cpp Add isActive() and isSustain() to envelope il y a 6 ans
effect_envelope.h Add isActive() and isSustain() to envelope il y a 6 ans
effect_fade.cpp Include Arduino.h first in all cpp files, for precompiled header speedup il y a 6 ans
effect_fade.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
effect_flange.cpp Include Arduino.h first in all cpp files, for precompiled header speedup il y a 6 ans
effect_flange.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
effect_freeverb.cpp Import all of Frank's T4 edits il y a 5 ans
effect_freeverb.h Add AudioEffectFreeverbStereo il y a 6 ans
effect_granular.cpp Increase granular speed range, change public function to setSpeed() il y a 6 ans
effect_granular.h Increase granular speed range, change public function to setSpeed() il y a 6 ans
effect_midside.cpp Import all of Frank's T4 edits il y a 5 ans
effect_midside.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
effect_multiply.cpp Import all of Frank's T4 edits il y a 5 ans
effect_multiply.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
effect_rectifier.cpp Add rectifier effect il y a 4 ans
effect_rectifier.h update keywords il y a 4 ans
effect_reverb.cpp memset: wrong size - element size is not 1 il y a 6 ans
effect_reverb.h Add reverb effect, from Joao Rossi Filho il y a 8 ans
effect_waveshaper.cpp Include Arduino.h first in all cpp files, for precompiled header speedup il y a 6 ans
effect_waveshaper.h Accept floats instead of int16_ts for waveshape in shape() il y a 7 ans
filter_biquad.cpp Add comment about noise shaping in biquad filter il y a 5 ans
filter_biquad.h Add shelving filter support for biquad il y a 8 ans
filter_fir.cpp Include Arduino.h first in all cpp files, for precompiled header speedup il y a 6 ans
filter_fir.h Do not assume AudioStream.h includes Arduino.h il y a 8 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 Update links in comments, to Laurent de Soras's exp2 approximation info il y a 5 ans
filter_variable.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
input_adc.cpp Fix ADC input on Teensy 3.x il y a 4 ans
input_adc.h Initial support for ADC input on Teensy 4.0 il y a 4 ans
input_adcs.cpp align il y a 4 ans
input_adcs.h Fix indentation and move filtercoefficient to #define constant instead of int32_t variable il y a 7 ans
input_i2s.cpp fix warning il y a 4 ans
input_i2s.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
input_i2s2.cpp Update input_i2s2.cpp il y a 4 ans
input_i2s2.h various (see below) il y a 5 ans
input_i2s_hex.cpp add DMAMEM, fix warnings il y a 4 ans
input_i2s_hex.h 6 channel I2S input for Teensy 4.0 il y a 4 ans
input_i2s_oct.cpp 8 channel I2S input for Teensy 4.0 il y a 4 ans
input_i2s_oct.h 8 channel I2S input for Teensy 4.0 il y a 4 ans
input_i2s_quad.cpp add DMAMEM, fix warnings il y a 4 ans
input_i2s_quad.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
input_pdm.cpp Update input_pdm.cpp il y a 4 ans
input_pdm.h Add AudioInputPDM il y a 6 ans
input_spdif3.cpp spdif-input il y a 4 ans
input_spdif3.h spdif-input il y a 4 ans
input_tdm.cpp Fix TDM input on Teensy 4.0 il y a 5 ans
input_tdm.h Add AudioInputTDM il y a 7 ans
input_tdm2.cpp Fix TDM2 on Teensy 4.0 il y a 5 ans
input_tdm2.h T4: Input TDM, Input TDM2 il y a 5 ans
keywords.txt update keywords il y a 4 ans
library.json Let PlatformIO automatically detect Arduino v1.0 library format il y a 8 ans
library.properties Edit version string, for Arduino 1.6.11 compatibility il y a 8 ans
memcpy_audio.S Import all of Frank's T4 edits il y a 5 ans
memcpy_audio.h Add memcpy_tointerleaveQuad (thanks Frank) il y a 8 ans
mixer.cpp Import all of Frank's T4 edits il y a 5 ans
mixer.h Import all of Frank's T4 edits il y a 5 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_adat.cpp Update output_adat.cpp il y a 4 ans
output_adat.h Add ADAT 8 channel TOSLINK output by Ernstjan Freriks il y a 7 ans
output_dac.cpp Remove leftover debug printing il y a 4 ans
output_dac.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
output_dacs.cpp alignment il y a 4 ans
output_dacs.h Add AudioOutputAnalogStereo il y a 8 ans
output_i2s.cpp fix slave i2s output on teensy 4 il y a 4 ans
output_i2s.h 8 channel I2S output for Teensy 4.0 il y a 4 ans
output_i2s2.cpp Fix simultaneous input & output on I2S2 il y a 4 ans
output_i2s2.h various (see below) il y a 5 ans
output_i2s_hex.cpp 6 channel I2S output for Teensy 4.0 il y a 4 ans
output_i2s_hex.h 6 channel I2S output for Teensy 4.0 il y a 4 ans
output_i2s_oct.cpp 8 channel I2S output for Teensy 4.0 il y a 4 ans
output_i2s_oct.h 8 channel I2S output for Teensy 4.0 il y a 4 ans
output_i2s_quad.cpp Quad I2S output for Teensy 4.0 il y a 4 ans
output_i2s_quad.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
output_mqs.cpp cache-support mqs il y a 5 ans
output_mqs.h add output_mqs il y a 5 ans
output_pt8211.cpp Fix compile errors on Teensy LC il y a 4 ans
output_pt8211.h add output_pt8211 il y a 5 ans
output_pt8211_2.cpp Fix PT8211 on Teensy 4.x il y a 4 ans
output_pt8211_2.h add output_pt8211_2 il y a 5 ans
output_pwm.cpp Disable not-yet-working PWM output for Teensy 4.x il y a 4 ans
output_pwm.h Add Teensy 4 PWM output il y a 4 ans
output_spdif.cpp Fix compile errors on Teensy LC il y a 4 ans
output_spdif.h SPDIF il y a 5 ans
output_spdif2.cpp PROGMEM->FLASHMEM il y a 4 ans
output_spdif2.h SPDIF il y a 5 ans
output_spdif3.cpp spdif-input il y a 4 ans
output_spdif3.h spdif-input il y a 4 ans
output_tdm.cpp Fix compile errors on Teensy LC il y a 4 ans
output_tdm.h Add AudioInputTDM il y a 7 ans
output_tdm2.cpp Fix TDM2 on Teensy 4.0 il y a 5 ans
output_tdm2.h various (see below) il y a 5 ans
play_memory.cpp Include Arduino.h first in all cpp files, for precompiled header speedup il y a 6 ans
play_memory.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
play_queue.cpp Allow larger queues on Teensy 3.5, 3.6, 4.0 il y a 4 ans
play_queue.h Allow larger queues on Teensy 3.5, 3.6, 4.0 il y a 4 ans
play_sd_raw.cpp Include Arduino.h first in all cpp files, for precompiled header speedup il y a 6 ans
play_sd_raw.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
play_sd_wav.cpp Play WAV files with junk sections il y a 6 ans
play_sd_wav.h Bugfix for missing initialization of data pointers in AudioPlaySdWav il y a 6 ans
play_serialflash_raw.cpp Include Arduino.h first in all cpp files, for precompiled header speedup il y a 6 ans
play_serialflash_raw.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
record_queue.cpp Allow larger queues on Teensy 3.5, 3.6, 4.0 il y a 4 ans
record_queue.h Allow larger queues on Teensy 3.5, 3.6, 4.0 il y a 4 ans
spi_interrupt.cpp Include Arduino.h first in all cpp files, for precompiled header speedup il y a 6 ans
spi_interrupt.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
synth_dc.cpp Include Arduino.h first in all cpp files, for precompiled header speedup il y a 6 ans
synth_dc.h Import all of Frank's T4 edits il y a 5 ans
synth_karplusstrong.cpp Fix compile errors on Teensy LC il y a 4 ans
synth_karplusstrong.h Add Synthesis Guitar example il y a 8 ans
synth_pinknoise.cpp Include Arduino.h first in all cpp files, for precompiled header speedup il y a 6 ans
synth_pinknoise.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
synth_pwm.cpp Import all of Frank's T4 edits il y a 5 ans
synth_pwm.h Add AudioSynthWaveformPWM il y a 7 ans
synth_simple_drum.cpp Fix compile errors on Teensy LC il y a 4 ans
synth_simple_drum.h Adding SimpleDrum synthesis object to audio library. il y a 8 ans
synth_sine.cpp Import all of Frank's T4 edits il y a 5 ans
synth_sine.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
synth_tonesweep.cpp Include Arduino.h first in all cpp files, for precompiled header speedup il y a 6 ans
synth_tonesweep.h ToneSweep improvements (thanks Pio) il y a 7 ans
synth_waveform.cpp Update links in comments, to Laurent de Soras's exp2 approximation info il y a 5 ans
synth_waveform.h Add waveform phase modulation il y a 6 ans
synth_waveform.md Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave. il y a 10 ans
synth_wavetable.cpp Fix compile errors on Teensy LC il y a 4 ans
synth_wavetable.h Avoid global Wavetable defines il y a 6 ans
synth_whitenoise.cpp Import all of Frank's T4 edits il y a 5 ans
synth_whitenoise.h Do not assume AudioStream.h includes Arduino.h il y a 8 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/index.html

Supported Hardware

Audio Adaptor Board for 16 bit stereo input and output.

Inputs Outputs

Dual Audio Adaptor Boards for quad channel 16 bit input and output.

Teensy 3.6, Teensy 3.5, Teensy 3.2, or Teensy 3.1 12 bit DAC Output (Mono)

DAC Output

Teensy 3.6, Teensy 3.5, Teensy 3.2, Teensy 3.1 or Teensy 3.0 ADC Input (Mono)

ADC Input

Teensy 3.6, Teensy 3.5, or Teensy 3.2 ADC Input (Stereo)

ADC Input

Teensy 3.6 or Teensy 3.5 12 bit DAC Output (Stereo)

DAC Output

Teensy 3.6, Teensy 3.5, Teensy 3.2, Teensy 3.1 or Teensy 3.0 PWM Output (Mono)

PWM Output

USB Audio: Bi-Directional Stereo Streaming to a PC

Inputs Outputs