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PaulStoffregen 9a9fff5276 Fix TDM output on Teensy 4.0 5 år sedan
docs Add issue template 6 år sedan
examples WM8731 has flaky I2C communication workaround 5 år sedan
extras Improve wav2sketch parsing of WAV files with junk sections 6 år sedan
gui Start list of verified compatible I2S chips 5 år sedan
utility Fix compiler warning 5 år sedan
.gitignore Add documentation for new objects 8 år sedan
.travis.yml Update Travis CI settings 8 år sedan
Audio.h T4: Input TDM, Input TDM2 5 år sedan
AudioControl.h Add AudioSynthWaveformSine 10 år sedan
README.md Update readme 7 år sedan
analyze_fft256.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
analyze_fft256.h Fix problem with optimized loops like do {} while (!myFFT.available()); 7 år sedan
analyze_fft1024.cpp Import all of Frank's T4 edits 5 år sedan
analyze_fft1024.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
analyze_notefreq.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
analyze_notefreq.h NoteFrequency fixes 8 år sedan
analyze_peak.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
analyze_peak.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
analyze_print.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
analyze_print.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
analyze_rms.cpp Import all of Frank's T4 edits 5 år sedan
analyze_rms.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
analyze_tonedetect.cpp Import all of Frank's T4 edits 5 år sedan
analyze_tonedetect.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
control_ak4558.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
control_ak4558.h Fixed control functions, examples, GUI elements 9 år sedan
control_cs4272.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
control_cs4272.h Add CS4272 control (thanks William Hollender) 8 år sedan
control_cs42448.cpp Add comment about strange CS42448 issue and undocumented bit 5 år sedan
control_cs42448.h Add AudioControlCS42448 7 år sedan
control_sgtl5000.cpp Import all of Frank's T4 edits 5 år sedan
control_sgtl5000.h Add ability to control two SGTL5000 chips 8 år sedan
control_tlv320aic3206.cpp AIC3206: rename channel macros, add comments 6 år sedan
control_tlv320aic3206.h AIC3206: rename channel macros, add comments 6 år sedan
control_wm8731.cpp WM8731 has flaky I2C communication workaround 5 år sedan
control_wm8731.h Add WM8731 inputSelect() function and update example 6 år sedan
data_spdif.c use common spdif bcmlookup table 5 år sedan
data_ulaw.c Add missing open source license headers 10 år sedan
data_waveforms.c Remove old AudioSynthWaveform 10 år sedan
data_windows.c Add other window types for 1024 point FFT 10 år sedan
effect_bitcrusher.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
effect_bitcrusher.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
effect_chorus.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
effect_chorus.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
effect_combine.cpp Add AudioEffectDigitalCombine (from Bleep Labs) 6 år sedan
effect_combine.h Move combine effect constants to class enum, not global scope 6 år sedan
effect_delay.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
effect_delay.h Fix delay effect on Teensy 3.5 & 3.6 7 år sedan
effect_delay_ext.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
effect_delay_ext.h Add F-RAM 7 år sedan
effect_envelope.cpp Add isActive() and isSustain() to envelope 6 år sedan
effect_envelope.h Add isActive() and isSustain() to envelope 6 år sedan
effect_fade.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
effect_fade.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
effect_flange.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
effect_flange.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
effect_freeverb.cpp Import all of Frank's T4 edits 5 år sedan
effect_freeverb.h Add AudioEffectFreeverbStereo 6 år sedan
effect_granular.cpp Increase granular speed range, change public function to setSpeed() 6 år sedan
effect_granular.h Increase granular speed range, change public function to setSpeed() 6 år sedan
effect_midside.cpp Import all of Frank's T4 edits 5 år sedan
effect_midside.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
effect_multiply.cpp Import all of Frank's T4 edits 5 år sedan
effect_multiply.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
effect_reverb.cpp memset: wrong size - element size is not 1 6 år sedan
effect_reverb.h Add reverb effect, from Joao Rossi Filho 8 år sedan
effect_waveshaper.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
effect_waveshaper.h Accept floats instead of int16_ts for waveshape in shape() 7 år sedan
filter_biquad.cpp Add comment about noise shaping in biquad filter 5 år sedan
filter_biquad.h Add shelving filter support for biquad 8 år sedan
filter_fir.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
filter_fir.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
filter_fir.md Change FIR filter (as suggested by rheslip) to filter one channel instead of two. Updated example, added documenting file 10 år sedan
filter_variable.cpp Update links in comments, to Laurent de Soras's exp2 approximation info 5 år sedan
filter_variable.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
input_adc.cpp Import all of Frank's T4 edits 5 år sedan
input_adc.h Fix indentation and move filtercoefficient to #define constant instead of int32_t variable 7 år sedan
input_adcs.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
input_adcs.h Fix indentation and move filtercoefficient to #define constant instead of int32_t variable 7 år sedan
input_i2s.cpp Fix simultaneous I2S input & output on Teensy 4.0 5 år sedan
input_i2s.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
input_i2s2.cpp various (see below) 5 år sedan
input_i2s2.h various (see below) 5 år sedan
input_i2s_quad.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
input_i2s_quad.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
input_pdm.cpp Import all of Frank's T4 edits 5 år sedan
input_pdm.h Add AudioInputPDM 6 år sedan
input_tdm.cpp T4: Input TDM, Input TDM2 5 år sedan
input_tdm.h Add AudioInputTDM 7 år sedan
input_tdm2.cpp T4: Input TDM, Input TDM2 5 år sedan
input_tdm2.h T4: Input TDM, Input TDM2 5 år sedan
keywords.txt T4: Input TDM, Input TDM2 5 år sedan
library.json Let PlatformIO automatically detect Arduino v1.0 library format 8 år sedan
library.properties Edit version string, for Arduino 1.6.11 compatibility 8 år sedan
memcpy_audio.S Import all of Frank's T4 edits 5 år sedan
memcpy_audio.h Add memcpy_tointerleaveQuad (thanks Frank) 8 år sedan
mixer.cpp Import all of Frank's T4 edits 5 år sedan
mixer.h Import all of Frank's T4 edits 5 år sedan
multiplier.md Add a multiplier (by rheslip) 10 år sedan
new_objects.md change format for new_objects files 11 år sedan
output_adat.cpp Import all of Frank's T4 edits 5 år sedan
output_adat.h Add ADAT 8 channel TOSLINK output by Ernstjan Freriks 7 år sedan
output_dac.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
output_dac.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
output_dacs.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
output_dacs.h Add AudioOutputAnalogStereo 8 år sedan
output_i2s.cpp Fix I2S output on Teensy 3.0 5 år sedan
output_i2s.h various (see below) 5 år sedan
output_i2s2.cpp Elimitate unused var 'dc' compile warning 5 år sedan
output_i2s2.h various (see below) 5 år sedan
output_i2s_quad.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
output_i2s_quad.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
output_mqs.cpp cache-support mqs 5 år sedan
output_mqs.h add output_mqs 5 år sedan
output_pt8211.cpp PT8211: Fix Teensy 3.x 5 år sedan
output_pt8211.h add output_pt8211 5 år sedan
output_pt8211_2.cpp add output_pt8211_2 5 år sedan
output_pt8211_2.h add output_pt8211_2 5 år sedan
output_pwm.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
output_pwm.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
output_spdif.cpp Patch for T4B2 (Pin6 -> Pin7) 5 år sedan
output_spdif.h SPDIF 5 år sedan
output_spdif2.cpp fix SPDIF2 for Teensy 3.x 5 år sedan
output_spdif2.h SPDIF 5 år sedan
output_spdif3.cpp Udpate 5 år sedan
output_spdif3.h add SPDIF3 5 år sedan
output_tdm.cpp Fix TDM output on Teensy 4.0 5 år sedan
output_tdm.h Add AudioInputTDM 7 år sedan
output_tdm2.cpp T4: Input TDM, Input TDM2 5 år sedan
output_tdm2.h various (see below) 5 år sedan
play_memory.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
play_memory.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
play_queue.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
play_queue.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
play_sd_raw.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
play_sd_raw.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
play_sd_wav.cpp Play WAV files with junk sections 6 år sedan
play_sd_wav.h Bugfix for missing initialization of data pointers in AudioPlaySdWav 6 år sedan
play_serialflash_raw.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
play_serialflash_raw.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
record_queue.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
record_queue.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
spi_interrupt.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
spi_interrupt.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
synth_dc.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
synth_dc.h Import all of Frank's T4 edits 5 år sedan
synth_karplusstrong.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
synth_karplusstrong.h Add Synthesis Guitar example 8 år sedan
synth_pinknoise.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
synth_pinknoise.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
synth_pwm.cpp Import all of Frank's T4 edits 5 år sedan
synth_pwm.h Add AudioSynthWaveformPWM 7 år sedan
synth_simple_drum.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
synth_simple_drum.h Adding SimpleDrum synthesis object to audio library. 8 år sedan
synth_sine.cpp Import all of Frank's T4 edits 5 år sedan
synth_sine.h Do not assume AudioStream.h includes Arduino.h 8 år sedan
synth_tonesweep.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 år sedan
synth_tonesweep.h ToneSweep improvements (thanks Pio) 7 år sedan
synth_waveform.cpp Update links in comments, to Laurent de Soras's exp2 approximation info 5 år sedan
synth_waveform.h Add waveform phase modulation 6 år sedan
synth_waveform.md Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave. 10 år sedan
synth_wavetable.cpp Fix wavetable crash on instrument change after stop 6 år sedan
synth_wavetable.h Avoid global Wavetable defines 6 år sedan
synth_whitenoise.cpp Import all of Frank's T4 edits 5 år sedan
synth_whitenoise.h Do not assume AudioStream.h includes Arduino.h 8 år sedan

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