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Benjamin d16055bfbd Add biquad shelf filter documentation in GUI 8 anni fa
examples Add comments to USB examples 8 anni fa
extras Len noticed a bug in binary velocity output 8 anni fa
gui Add biquad shelf filter documentation in GUI 8 anni fa
utility Support more clock speeds 8 anni fa
.travis.yml Update Travis CI settings 8 anni fa
Audio.h Add PT8211 w/ experimental 4x oversampling 8 anni fa
AudioControl.h Add AudioSynthWaveformSine 10 anni fa
README.md remove Travis CI status from readme (it's too unreliable) 8 anni fa
analyze_fft256.cpp Initial work on FFT256 for Teensy-LC (untested) 9 anni fa
analyze_fft256.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
analyze_fft1024.cpp Fix some Teensy-LC compiler errors 9 anni fa
analyze_fft1024.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
analyze_notefreq.cpp Removed debug code, updated comments 8 anni fa
analyze_notefreq.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
analyze_peak.cpp Add TODO for analyze peak optimization 8 anni fa
analyze_peak.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
analyze_print.cpp Change AudioAnalyzePrint name API 10 anni fa
analyze_print.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
analyze_rms.cpp Don't compile M4 code on LC (but LC still not working) 8 anni fa
analyze_rms.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
analyze_tonedetect.cpp Fix more Teensy-LC compiler errors 9 anni fa
analyze_tonedetect.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
control_ak4558.cpp Fixed control functions, examples, GUI elements 9 anni fa
control_ak4558.h Fixed control functions, examples, GUI elements 9 anni fa
control_cs4272.cpp Add CS4272 control (thanks William Hollender) 8 anni fa
control_cs4272.h Add CS4272 control (thanks William Hollender) 8 anni fa
control_sgtl5000.cpp Add ability to control two SGTL5000 chips 8 anni fa
control_sgtl5000.h Add ability to control two SGTL5000 chips 8 anni fa
control_wm8731.cpp AudioControlWM8731::inputLevel(float n) 9 anni fa
control_wm8731.h AudioControlWM8731::inputLevel(float n) 9 anni fa
data_ulaw.c Add missing open source license headers 10 anni fa
data_waveforms.c Remove old AudioSynthWaveform 10 anni fa
data_windows.c Add other window types for 1024 point FFT 10 anni fa
effect_bitcrusher.cpp Fix compiler warning 9 anni fa
effect_bitcrusher.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
effect_chorus.cpp Merge pull request #166 from FrankBoesing/patch-2 8 anni fa
effect_chorus.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
effect_delay.cpp Remove unused multiplier 10 anni fa
effect_delay.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
effect_delay_ext.cpp Add SPI external memory timing comment 8 anni fa
effect_delay_ext.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
effect_envelope.cpp Add AudioEffectEnvelope 10 anni fa
effect_envelope.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
effect_fade.cpp Add MIT license 10 anni fa
effect_fade.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
effect_flange.cpp use AUDIO_SAMPLE_RATE_EXACT 8 anni fa
effect_flange.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
effect_midside.cpp Don't compile M4 code on LC (but LC still not working) 8 anni fa
effect_midside.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
effect_multiply.cpp Fix more Teensy-LC compiler errors 9 anni fa
effect_multiply.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
filter_biquad.cpp Don't cause a loud pop when changing biquad filter coefficients 8 anni fa
filter_biquad.h Add shelving filter support for biquad 8 anni fa
filter_fir.cpp Impove and document FIR filter 10 anni fa
filter_fir.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
filter_fir.md Change FIR filter (as suggested by rheslip) to filter one channel instead of two. Updated example, added documenting file 10 anni fa
filter_variable.cpp Fix more Teensy-LC compiler errors 9 anni fa
filter_variable.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
input_adc.cpp Fix some Teensy-LC compiler errors 9 anni fa
input_adc.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
input_i2s.cpp Fix more Teensy-LC compiler errors 9 anni fa
input_i2s.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
input_i2s_quad.cpp More hardware defs 8 anni fa
input_i2s_quad.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
keywords.txt Add PT8211 w/ experimental 4x oversampling 8 anni fa
library.json Use tagged source code from repo 8 anni fa
library.properties Increase to version 1.03 9 anni fa
memcpy_audio.S More hardware defs 8 anni fa
memcpy_audio.h Add memcpy_tointerleaveQuad (thanks Frank) 8 anni fa
mixer.cpp Fix some Teensy-LC compiler errors 9 anni fa
mixer.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
multiplier.md Add a multiplier (by rheslip) 10 anni fa
new_objects.md change format for new_objects files 11 anni fa
output_dac.cpp More hardware defs 8 anni fa
output_dac.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
output_i2s.cpp Support more clock speeds 8 anni fa
output_i2s.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
output_i2s_quad.cpp Support more clock speeds 8 anni fa
output_i2s_quad.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
output_pt8211.cpp Remove LED blink in isr 8 anni fa
output_pt8211.h Add PT8211 w/ experimental 4x oversampling 8 anni fa
output_pwm.cpp Fix more Teensy-LC compiler errors 9 anni fa
output_pwm.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
output_spdif.cpp Support more clock speeds 8 anni fa
output_spdif.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
play_memory.cpp Add status and position functions to AudioPlayMemory 10 anni fa
play_memory.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
play_queue.cpp do not forget - your own addition :-) 10 anni fa
play_queue.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
play_sd_raw.cpp Do not disable all interrupts while opening RAW files 9 anni fa
play_sd_raw.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
play_sd_wav.cpp fix problem with left+right channels being swapped 8 anni fa
play_sd_wav.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
play_serialflash_raw.cpp remove leftover debug code from AudioPlaySerialflashRaw 9 anni fa
play_serialflash_raw.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
record_queue.cpp Fix harmless compiler warnings in AudioRecordQueue 10 anni fa
record_queue.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
spi_interrupt.cpp Add SPI interrupt registration layer 10 anni fa
spi_interrupt.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
synth_dc.cpp Add AudioSynthWaveformDc 10 anni fa
synth_dc.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
synth_karplusstrong.cpp Decay resonance (loop gain) slightly in Karplus Strong 8 anni fa
synth_karplusstrong.h Add Synthesis Guitar example 8 anni fa
synth_pinknoise.cpp Clean up harmless compiler warnings 10 anni fa
synth_pinknoise.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
synth_simple_drum.cpp Adding SimpleDrum synthesis object to audio library. 8 anni fa
synth_simple_drum.h Adding SimpleDrum synthesis object to audio library. 8 anni fa
synth_sine.cpp fix incorrect comment 8 anni fa
synth_sine.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
synth_tonesweep.cpp fix tonesweep 8 anni fa
synth_tonesweep.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
synth_waveform.cpp #144: Add the reverse sawtooth and sample-and-hold waveforms. 9 anni fa
synth_waveform.h Do not assume AudioStream.h includes Arduino.h 8 anni fa
synth_waveform.md Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave. 10 anni fa
synth_whitenoise.cpp Fix more Teensy-LC compiler errors 9 anni fa
synth_whitenoise.h Do not assume AudioStream.h includes Arduino.h 8 anni fa

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