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teensy-audio
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PaulStoffregen f4bdcb4862 Document maximum possible delays pirms 7 gadiem
examples Add ADAT 8 channel TOSLINK output by Ernstjan Freriks pirms 7 gadiem
extras Fix format error: header chunkSize can be 16, 18, or 40 pirms 7 gadiem
gui Document maximum possible delays pirms 7 gadiem
utility Replace DC removal algorithm with IIR HPF, 2 Hz pirms 7 gadiem
.gitignore Add documentation for new objects pirms 8 gadiem
.travis.yml Update Travis CI settings pirms 8 gadiem
Audio.h Add ADAT 8 channel TOSLINK output by Ernstjan Freriks pirms 7 gadiem
AudioControl.h Add AudioSynthWaveformSine pirms 10 gadiem
README.md Update readme pirms 7 gadiem
analyze_fft256.cpp Initial work on FFT256 for Teensy-LC (untested) pirms 9 gadiem
analyze_fft256.h Fix problem with optimized loops like do {} while (!myFFT.available()); pirms 7 gadiem
analyze_fft1024.cpp Fix some Teensy-LC compiler errors pirms 9 gadiem
analyze_fft1024.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
analyze_notefreq.cpp Remove leftover debug code pirms 8 gadiem
analyze_notefreq.h NoteFrequency fixes pirms 8 gadiem
analyze_peak.cpp Add TODO for analyze peak optimization pirms 8 gadiem
analyze_peak.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
analyze_print.cpp Change AudioAnalyzePrint name API pirms 10 gadiem
analyze_print.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
analyze_rms.cpp AudioAnalyzeRMS needs to treat no input as zeros pirms 7 gadiem
analyze_rms.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
analyze_tonedetect.cpp Fix more Teensy-LC compiler errors pirms 9 gadiem
analyze_tonedetect.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
control_ak4558.cpp Fixed control functions, examples, GUI elements pirms 9 gadiem
control_ak4558.h Fixed control functions, examples, GUI elements pirms 9 gadiem
control_cs4272.cpp Add CS4272 control (thanks William Hollender) pirms 8 gadiem
control_cs4272.h Add CS4272 control (thanks William Hollender) pirms 8 gadiem
control_cs42448.cpp Add AudioControlCS42448 pirms 7 gadiem
control_cs42448.h Add AudioControlCS42448 pirms 7 gadiem
control_sgtl5000.cpp Add ability to control two SGTL5000 chips pirms 8 gadiem
control_sgtl5000.h Add ability to control two SGTL5000 chips pirms 8 gadiem
control_wm8731.cpp AudioControlWM8731::inputLevel(float n) pirms 9 gadiem
control_wm8731.h AudioControlWM8731::inputLevel(float n) pirms 9 gadiem
data_ulaw.c Add missing open source license headers pirms 10 gadiem
data_waveforms.c Remove old AudioSynthWaveform pirms 10 gadiem
data_windows.c Add other window types for 1024 point FFT pirms 10 gadiem
effect_bitcrusher.cpp Fix compiler warning pirms 9 gadiem
effect_bitcrusher.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
effect_chorus.cpp Merge pull request #166 from FrankBoesing/patch-2 pirms 8 gadiem
effect_chorus.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
effect_delay.cpp Fix delay effect on Teensy 3.5 & 3.6 pirms 7 gadiem
effect_delay.h Fix delay effect on Teensy 3.5 & 3.6 pirms 7 gadiem
effect_delay_ext.cpp Add F-RAM pirms 7 gadiem
effect_delay_ext.h Add F-RAM pirms 7 gadiem
effect_envelope.cpp Add AudioEffectEnvelope releaseNoteOn pirms 7 gadiem
effect_envelope.h Add AudioEffectEnvelope releaseNoteOn pirms 7 gadiem
effect_fade.cpp Fix minor compiler warning pirms 8 gadiem
effect_fade.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
effect_flange.cpp Calculation of delay_rate_incr pirms 8 gadiem
effect_flange.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
effect_midside.cpp Don't compile M4 code on LC (but LC still not working) pirms 8 gadiem
effect_midside.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
effect_multiply.cpp Fix more Teensy-LC compiler errors pirms 9 gadiem
effect_multiply.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
effect_reverb.cpp Add reverb effect, from Joao Rossi Filho pirms 8 gadiem
effect_reverb.h Add reverb effect, from Joao Rossi Filho pirms 8 gadiem
effect_waveshaper.cpp Accept floats instead of int16_ts for waveshape in shape() pirms 7 gadiem
effect_waveshaper.h Accept floats instead of int16_ts for waveshape in shape() pirms 7 gadiem
filter_biquad.cpp Don't cause a loud pop when changing biquad filter coefficients pirms 8 gadiem
filter_biquad.h Add shelving filter support for biquad pirms 8 gadiem
filter_fir.cpp Impove and document FIR filter pirms 10 gadiem
filter_fir.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
filter_fir.md Change FIR filter (as suggested by rheslip) to filter one channel instead of two. Updated example, added documenting file pirms 10 gadiem
filter_variable.cpp Fix more Teensy-LC compiler errors pirms 9 gadiem
filter_variable.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
input_adc.cpp Further precision increase eliminates DC offset pirms 7 gadiem
input_adc.h Fix indentation and move filtercoefficient to #define constant instead of int32_t variable pirms 7 gadiem
input_adcs.cpp Further precision increase eliminates DC offset pirms 7 gadiem
input_adcs.h Fix indentation and move filtercoefficient to #define constant instead of int32_t variable pirms 7 gadiem
input_i2s.cpp Use 64 bit frame size for I2S master mode pirms 7 gadiem
input_i2s.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
input_i2s_quad.cpp Quad input on Teensy 3.5 & 3.6 needs pin 38 pirms 7 gadiem
input_i2s_quad.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
input_tdm.cpp Add AudioInputTDM pirms 7 gadiem
input_tdm.h Add AudioInputTDM pirms 7 gadiem
keywords.txt Add ADAT 8 channel TOSLINK output by Ernstjan Freriks pirms 7 gadiem
library.json Let PlatformIO automatically detect Arduino v1.0 library format pirms 8 gadiem
library.properties Edit version string, for Arduino 1.6.11 compatibility pirms 8 gadiem
memcpy_audio.S Allow blocksizes 8 and 16 pirms 8 gadiem
memcpy_audio.h Add memcpy_tointerleaveQuad (thanks Frank) pirms 8 gadiem
mixer.cpp Fix some Teensy-LC compiler errors pirms 9 gadiem
mixer.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
multiplier.md Add a multiplier (by rheslip) pirms 10 gadiem
new_objects.md change format for new_objects files pirms 11 gadiem
output_adat.cpp Add ADAT 8 channel TOSLINK output by Ernstjan Freriks pirms 7 gadiem
output_adat.h Add ADAT 8 channel TOSLINK output by Ernstjan Freriks pirms 7 gadiem
output_dac.cpp Fix DAC output range pirms 7 gadiem
output_dac.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
output_dacs.cpp Fix buffer management in stereo DAC output pirms 7 gadiem
output_dacs.h Add AudioOutputAnalogStereo pirms 8 gadiem
output_i2s.cpp Use 64 bit frame size for I2S master mode pirms 7 gadiem
output_i2s.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
output_i2s_quad.cpp Fix simultaneous quad input & output on Teensy 3.6 with CPU > 120 MHz pirms 7 gadiem
output_i2s_quad.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
output_pt8211.cpp Add a comment for TDA1543 pirms 7 gadiem
output_pt8211.h changed defines to be more specific pirms 8 gadiem
output_pwm.cpp Fix BUG for AUDIO_BLOCK_SAMPLES != 128 pirms 8 gadiem
output_pwm.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
output_spdif.cpp Support more clock speeds pirms 8 gadiem
output_spdif.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
output_tdm.cpp Add AudioInputTDM pirms 7 gadiem
output_tdm.h Add AudioInputTDM pirms 7 gadiem
play_memory.cpp Fix hard-coded 128 block size limits pirms 8 gadiem
play_memory.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
play_queue.cpp do not forget - your own addition :-) pirms 10 gadiem
play_queue.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
play_sd_raw.cpp Fix for two little bugs pirms 8 gadiem
play_sd_raw.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
play_sd_wav.cpp Fix AudioPlaySdWav status functions with LTO pirms 7 gadiem
play_sd_wav.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
play_serialflash_raw.cpp remove leftover debug code from AudioPlaySerialflashRaw pirms 9 gadiem
play_serialflash_raw.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
record_queue.cpp Fix harmless compiler warnings in AudioRecordQueue pirms 10 gadiem
record_queue.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
spi_interrupt.cpp Add SPI interrupt registration layer pirms 10 gadiem
spi_interrupt.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
synth_dc.cpp Fix hard-coded 128 block size limits pirms 8 gadiem
synth_dc.h Add AudioSynthWaveformDc read() pirms 7 gadiem
synth_karplusstrong.cpp Decay resonance (loop gain) slightly in Karplus Strong pirms 8 gadiem
synth_karplusstrong.h Add Synthesis Guitar example pirms 8 gadiem
synth_pinknoise.cpp Clean up harmless compiler warnings pirms 10 gadiem
synth_pinknoise.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
synth_pwm.cpp Minor optimization in AudioSynthWaveformPWM pirms 7 gadiem
synth_pwm.h Add AudioSynthWaveformPWM pirms 7 gadiem
synth_simple_drum.cpp Adding SimpleDrum synthesis object to audio library. pirms 8 gadiem
synth_simple_drum.h Adding SimpleDrum synthesis object to audio library. pirms 8 gadiem
synth_sine.cpp Fix AudioSynthWaveformSineModulated amplitude without mod input (thanks neurofun) pirms 7 gadiem
synth_sine.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
synth_tonesweep.cpp ToneSweep improvements (thanks Pio) pirms 7 gadiem
synth_tonesweep.h ToneSweep improvements (thanks Pio) pirms 7 gadiem
synth_waveform.cpp #144: Add the reverse sawtooth and sample-and-hold waveforms. pirms 9 gadiem
synth_waveform.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem
synth_waveform.md Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave. pirms 10 gadiem
synth_whitenoise.cpp Fix more Teensy-LC compiler errors pirms 9 gadiem
synth_whitenoise.h Do not assume AudioStream.h includes Arduino.h pirms 8 gadiem

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