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Matt Bradshaw ea344052e3 clearer uint16 conversion, basic test script to track down rounding errors 6 years ago
docs Add issue template 6 years ago
examples Update WM8731 documentation 6 years ago
extras clearer uint16 conversion, basic test script to track down rounding errors 6 years ago
gui Update WM8731 documentation 6 years ago
utility Replace DC removal algorithm with IIR HPF, 2 Hz 7 years ago
.gitignore Add documentation for new objects 8 years ago
.travis.yml Update Travis CI settings 8 years ago
Audio.h Add AudioInputPDM 6 years ago
AudioControl.h Add AudioSynthWaveformSine 10 years ago
README.md Update readme 7 years ago
analyze_fft256.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
analyze_fft256.h Fix problem with optimized loops like do {} while (!myFFT.available()); 7 years ago
analyze_fft1024.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
analyze_fft1024.h Do not assume AudioStream.h includes Arduino.h 8 years ago
analyze_notefreq.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
analyze_notefreq.h NoteFrequency fixes 8 years ago
analyze_peak.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
analyze_peak.h Do not assume AudioStream.h includes Arduino.h 8 years ago
analyze_print.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
analyze_print.h Do not assume AudioStream.h includes Arduino.h 8 years ago
analyze_rms.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
analyze_rms.h Do not assume AudioStream.h includes Arduino.h 8 years ago
analyze_tonedetect.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
analyze_tonedetect.h Do not assume AudioStream.h includes Arduino.h 8 years ago
control_ak4558.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
control_ak4558.h Fixed control functions, examples, GUI elements 9 years ago
control_cs4272.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
control_cs4272.h Add CS4272 control (thanks William Hollender) 8 years ago
control_cs42448.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
control_cs42448.h Add AudioControlCS42448 7 years ago
control_sgtl5000.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
control_sgtl5000.h Add ability to control two SGTL5000 chips 8 years ago
control_wm8731.cpp Add WM8731 inputSelect() function and update example 6 years ago
control_wm8731.h Add WM8731 inputSelect() function and update example 6 years ago
data_ulaw.c Add missing open source license headers 10 years ago
data_waveforms.c Remove old AudioSynthWaveform 10 years ago
data_windows.c Add other window types for 1024 point FFT 10 years ago
effect_bitcrusher.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
effect_bitcrusher.h Do not assume AudioStream.h includes Arduino.h 8 years ago
effect_chorus.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
effect_chorus.h Do not assume AudioStream.h includes Arduino.h 8 years ago
effect_combine.cpp Add AudioEffectDigitalCombine (from Bleep Labs) 6 years ago
effect_combine.h Move combine effect constants to class enum, not global scope 6 years ago
effect_delay.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
effect_delay.h Fix delay effect on Teensy 3.5 & 3.6 7 years ago
effect_delay_ext.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
effect_delay_ext.h Add F-RAM 7 years ago
effect_envelope.cpp Add isActive() and isSustain() to envelope 6 years ago
effect_envelope.h Add isActive() and isSustain() to envelope 6 years ago
effect_fade.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
effect_fade.h Do not assume AudioStream.h includes Arduino.h 8 years ago
effect_flange.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
effect_flange.h Do not assume AudioStream.h includes Arduino.h 8 years ago
effect_freeverb.cpp Add AudioEffectFreeverbStereo 6 years ago
effect_freeverb.h Add AudioEffectFreeverbStereo 6 years ago
effect_granular.cpp Increase granular speed range, change public function to setSpeed() 6 years ago
effect_granular.h Increase granular speed range, change public function to setSpeed() 6 years ago
effect_midside.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
effect_midside.h Do not assume AudioStream.h includes Arduino.h 8 years ago
effect_multiply.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
effect_multiply.h Do not assume AudioStream.h includes Arduino.h 8 years ago
effect_reverb.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
effect_reverb.h Add reverb effect, from Joao Rossi Filho 8 years ago
effect_waveshaper.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
effect_waveshaper.h Accept floats instead of int16_ts for waveshape in shape() 7 years ago
filter_biquad.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
filter_biquad.h Add shelving filter support for biquad 8 years ago
filter_fir.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
filter_fir.h Do not assume AudioStream.h includes Arduino.h 8 years ago
filter_fir.md Change FIR filter (as suggested by rheslip) to filter one channel instead of two. Updated example, added documenting file 10 years ago
filter_variable.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
filter_variable.h Do not assume AudioStream.h includes Arduino.h 8 years ago
input_adc.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
input_adc.h Fix indentation and move filtercoefficient to #define constant instead of int32_t variable 7 years ago
input_adcs.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
input_adcs.h Fix indentation and move filtercoefficient to #define constant instead of int32_t variable 7 years ago
input_i2s.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
input_i2s.h Do not assume AudioStream.h includes Arduino.h 8 years ago
input_i2s_quad.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
input_i2s_quad.h Do not assume AudioStream.h includes Arduino.h 8 years ago
input_pdm.cpp Add AudioInputPDM 6 years ago
input_pdm.h Add AudioInputPDM 6 years ago
input_tdm.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
input_tdm.h Add AudioInputTDM 7 years ago
keywords.txt Add simple AudioAmplifier 6 years ago
library.json Let PlatformIO automatically detect Arduino v1.0 library format 8 years ago
library.properties Edit version string, for Arduino 1.6.11 compatibility 8 years ago
memcpy_audio.S Allow blocksizes 8 and 16 8 years ago
memcpy_audio.h Add memcpy_tointerleaveQuad (thanks Frank) 8 years ago
mixer.cpp Add simple AudioAmplifier 6 years ago
mixer.h Add simple AudioAmplifier 6 years ago
multiplier.md Add a multiplier (by rheslip) 10 years ago
new_objects.md change format for new_objects files 11 years ago
output_adat.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
output_adat.h Add ADAT 8 channel TOSLINK output by Ernstjan Freriks 7 years ago
output_dac.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
output_dac.h Do not assume AudioStream.h includes Arduino.h 8 years ago
output_dacs.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
output_dacs.h Add AudioOutputAnalogStereo 8 years ago
output_i2s.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
output_i2s.h Do not assume AudioStream.h includes Arduino.h 8 years ago
output_i2s_quad.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
output_i2s_quad.h Do not assume AudioStream.h includes Arduino.h 8 years ago
output_pt8211.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
output_pt8211.h changed defines to be more specific 8 years ago
output_pwm.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
output_pwm.h Do not assume AudioStream.h includes Arduino.h 8 years ago
output_spdif.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
output_spdif.h Do not assume AudioStream.h includes Arduino.h 8 years ago
output_tdm.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
output_tdm.h Add AudioInputTDM 7 years ago
play_memory.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
play_memory.h Do not assume AudioStream.h includes Arduino.h 8 years ago
play_queue.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
play_queue.h Do not assume AudioStream.h includes Arduino.h 8 years ago
play_sd_raw.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
play_sd_raw.h Do not assume AudioStream.h includes Arduino.h 8 years ago
play_sd_wav.cpp Play WAV files with junk sections 6 years ago
play_sd_wav.h Play WAV files with junk sections 6 years ago
play_serialflash_raw.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
play_serialflash_raw.h Do not assume AudioStream.h includes Arduino.h 8 years ago
record_queue.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
record_queue.h Do not assume AudioStream.h includes Arduino.h 8 years ago
spi_interrupt.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
spi_interrupt.h Do not assume AudioStream.h includes Arduino.h 8 years ago
synth_dc.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
synth_dc.h Add AudioSynthWaveformDc read() 7 years ago
synth_karplusstrong.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
synth_karplusstrong.h Add Synthesis Guitar example 8 years ago
synth_pinknoise.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
synth_pinknoise.h Do not assume AudioStream.h includes Arduino.h 8 years ago
synth_pwm.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
synth_pwm.h Add AudioSynthWaveformPWM 7 years ago
synth_simple_drum.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
synth_simple_drum.h Adding SimpleDrum synthesis object to audio library. 8 years ago
synth_sine.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
synth_sine.h Do not assume AudioStream.h includes Arduino.h 8 years ago
synth_tonesweep.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
synth_tonesweep.h ToneSweep improvements (thanks Pio) 7 years ago
synth_waveform.cpp Fix WAVEFORM_TRIANGLE_VARIABLE at less than 1.0 amplitude 6 years ago
synth_waveform.h Add waveform phase modulation 6 years ago
synth_waveform.md Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave. 10 years ago
synth_whitenoise.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 years ago
synth_whitenoise.h Do not assume AudioStream.h includes Arduino.h 8 years ago

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