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Damien Clarke 4e8caa70dd Accept floats instead of int16_ts for waveshape in shape() 7 年前
examples Better volume scaling in PassThroughUSB example 7 年前
extras Len noticed a bug in binary velocity output 8 年前
gui Add links to CV analog circuits in documentation 7 年前
utility Support more clock speeds 8 年前
.gitignore Add documentation for new objects 8 年前
.travis.yml Update Travis CI settings 8 年前
Audio.h Add AudioControlCS42448 7 年前
AudioControl.h Add AudioSynthWaveformSine 10 年前
README.md Update readme 7 年前
analyze_fft256.cpp Initial work on FFT256 for Teensy-LC (untested) 9 年前
analyze_fft256.h Do not assume AudioStream.h includes Arduino.h 8 年前
analyze_fft1024.cpp Fix some Teensy-LC compiler errors 9 年前
analyze_fft1024.h Do not assume AudioStream.h includes Arduino.h 8 年前
analyze_notefreq.cpp Remove leftover debug code 8 年前
analyze_notefreq.h NoteFrequency fixes 8 年前
analyze_peak.cpp Add TODO for analyze peak optimization 8 年前
analyze_peak.h Do not assume AudioStream.h includes Arduino.h 8 年前
analyze_print.cpp Change AudioAnalyzePrint name API 10 年前
analyze_print.h Do not assume AudioStream.h includes Arduino.h 8 年前
analyze_rms.cpp Don't compile M4 code on LC (but LC still not working) 9 年前
analyze_rms.h Do not assume AudioStream.h includes Arduino.h 8 年前
analyze_tonedetect.cpp Fix more Teensy-LC compiler errors 9 年前
analyze_tonedetect.h Do not assume AudioStream.h includes Arduino.h 8 年前
control_ak4558.cpp Fixed control functions, examples, GUI elements 9 年前
control_ak4558.h Fixed control functions, examples, GUI elements 9 年前
control_cs4272.cpp Add CS4272 control (thanks William Hollender) 8 年前
control_cs4272.h Add CS4272 control (thanks William Hollender) 8 年前
control_cs42448.cpp Add AudioControlCS42448 7 年前
control_cs42448.h Add AudioControlCS42448 7 年前
control_sgtl5000.cpp Add ability to control two SGTL5000 chips 8 年前
control_sgtl5000.h Add ability to control two SGTL5000 chips 8 年前
control_wm8731.cpp AudioControlWM8731::inputLevel(float n) 9 年前
control_wm8731.h AudioControlWM8731::inputLevel(float n) 9 年前
data_ulaw.c Add missing open source license headers 10 年前
data_waveforms.c Remove old AudioSynthWaveform 10 年前
data_windows.c Add other window types for 1024 point FFT 10 年前
effect_bitcrusher.cpp Fix compiler warning 9 年前
effect_bitcrusher.h Do not assume AudioStream.h includes Arduino.h 8 年前
effect_chorus.cpp Merge pull request #166 from FrankBoesing/patch-2 8 年前
effect_chorus.h Do not assume AudioStream.h includes Arduino.h 8 年前
effect_delay.cpp Remove unused multiplier 10 年前
effect_delay.h Increase maximum delay and scale with block size 7 年前
effect_delay_ext.cpp Add SPI external memory timing comment 8 年前
effect_delay_ext.h Do not assume AudioStream.h includes Arduino.h 8 年前
effect_envelope.cpp Add AudioEffectEnvelope 10 年前
effect_envelope.h Do not assume AudioStream.h includes Arduino.h 8 年前
effect_fade.cpp Fix minor compiler warning 8 年前
effect_fade.h Do not assume AudioStream.h includes Arduino.h 8 年前
effect_flange.cpp Calculation of delay_rate_incr 8 年前
effect_flange.h Do not assume AudioStream.h includes Arduino.h 8 年前
effect_midside.cpp Don't compile M4 code on LC (but LC still not working) 9 年前
effect_midside.h Do not assume AudioStream.h includes Arduino.h 8 年前
effect_multiply.cpp Fix more Teensy-LC compiler errors 9 年前
effect_multiply.h Do not assume AudioStream.h includes Arduino.h 8 年前
effect_reverb.cpp Add reverb effect, from Joao Rossi Filho 8 年前
effect_reverb.h Add reverb effect, from Joao Rossi Filho 8 年前
effect_waveshaper.cpp Accept floats instead of int16_ts for waveshape in shape() 7 年前
effect_waveshaper.h Accept floats instead of int16_ts for waveshape in shape() 7 年前
filter_biquad.cpp Don't cause a loud pop when changing biquad filter coefficients 8 年前
filter_biquad.h Add shelving filter support for biquad 8 年前
filter_fir.cpp Impove and document FIR filter 10 年前
filter_fir.h Do not assume AudioStream.h includes Arduino.h 8 年前
filter_fir.md Change FIR filter (as suggested by rheslip) to filter one channel instead of two. Updated example, added documenting file 10 年前
filter_variable.cpp Fix more Teensy-LC compiler errors 9 年前
filter_variable.h Do not assume AudioStream.h includes Arduino.h 8 年前
input_adc.cpp Fix ADC input with various clock speeds 8 年前
input_adc.h Fix the DC offset computation. The previous computation would occassionally get stuck with an incorrect offset. 8 年前
input_adcs.cpp Fix compile error on Teensy 3.0 8 年前
input_adcs.h Add AudioInputAnalogStereo (work in progress...) 8 年前
input_i2s.cpp Fix more Teensy-LC compiler errors 9 年前
input_i2s.h Do not assume AudioStream.h includes Arduino.h 8 年前
input_i2s_quad.cpp Quad input on Teensy 3.5 & 3.6 needs pin 38 7 年前
input_i2s_quad.h Do not assume AudioStream.h includes Arduino.h 8 年前
keywords.txt Add AudioControlCS42448 7 年前
library.json Let PlatformIO automatically detect Arduino v1.0 library format 8 年前
library.properties Edit version string, for Arduino 1.6.11 compatibility 8 年前
memcpy_audio.S Allow blocksizes 8 and 16 8 年前
memcpy_audio.h Add memcpy_tointerleaveQuad (thanks Frank) 8 年前
mixer.cpp Fix some Teensy-LC compiler errors 9 年前
mixer.h Do not assume AudioStream.h includes Arduino.h 8 年前
multiplier.md Add a multiplier (by rheslip) 10 年前
new_objects.md change format for new_objects files 11 年前
output_dac.cpp More hardware defs 8 年前
output_dac.h Do not assume AudioStream.h includes Arduino.h 8 年前
output_dacs.cpp Fix AudioOutputAnalogStereo analogReference 8 年前
output_dacs.h Add AudioOutputAnalogStereo 8 年前
output_i2s.cpp Fix I2S output when also using I2S input with CPU > 120 MHz 8 年前
output_i2s.h Do not assume AudioStream.h includes Arduino.h 8 年前
output_i2s_quad.cpp Fix simultaneous quad input & output on Teensy 3.6 with CPU > 120 MHz 7 年前
output_i2s_quad.h Do not assume AudioStream.h includes Arduino.h 8 年前
output_pt8211.cpp Bugfix re: noise when no blocks are available 8 年前
output_pt8211.h changed defines to be more specific 8 年前
output_pwm.cpp Fix BUG for AUDIO_BLOCK_SAMPLES != 128 8 年前
output_pwm.h Do not assume AudioStream.h includes Arduino.h 8 年前
output_spdif.cpp Support more clock speeds 8 年前
output_spdif.h Do not assume AudioStream.h includes Arduino.h 8 年前
play_memory.cpp Fix hard-coded 128 block size limits 8 年前
play_memory.h Do not assume AudioStream.h includes Arduino.h 8 年前
play_queue.cpp do not forget - your own addition :-) 10 年前
play_queue.h Do not assume AudioStream.h includes Arduino.h 8 年前
play_sd_raw.cpp Fix for two little bugs 8 年前
play_sd_raw.h Do not assume AudioStream.h includes Arduino.h 8 年前
play_sd_wav.cpp SDHC does not use SPI 8 年前
play_sd_wav.h Do not assume AudioStream.h includes Arduino.h 8 年前
play_serialflash_raw.cpp remove leftover debug code from AudioPlaySerialflashRaw 9 年前
play_serialflash_raw.h Do not assume AudioStream.h includes Arduino.h 8 年前
record_queue.cpp Fix harmless compiler warnings in AudioRecordQueue 10 年前
record_queue.h Do not assume AudioStream.h includes Arduino.h 8 年前
spi_interrupt.cpp Add SPI interrupt registration layer 10 年前
spi_interrupt.h Do not assume AudioStream.h includes Arduino.h 8 年前
synth_dc.cpp Fix hard-coded 128 block size limits 8 年前
synth_dc.h Do not assume AudioStream.h includes Arduino.h 8 年前
synth_karplusstrong.cpp Decay resonance (loop gain) slightly in Karplus Strong 8 年前
synth_karplusstrong.h Add Synthesis Guitar example 8 年前
synth_pinknoise.cpp Clean up harmless compiler warnings 10 年前
synth_pinknoise.h Do not assume AudioStream.h includes Arduino.h 8 年前
synth_simple_drum.cpp Adding SimpleDrum synthesis object to audio library. 8 年前
synth_simple_drum.h Adding SimpleDrum synthesis object to audio library. 8 年前
synth_sine.cpp fix incorrect comment 8 年前
synth_sine.h Do not assume AudioStream.h includes Arduino.h 8 年前
synth_tonesweep.cpp fix tonesweep 8 年前
synth_tonesweep.h Do not assume AudioStream.h includes Arduino.h 8 年前
synth_waveform.cpp #144: Add the reverse sawtooth and sample-and-hold waveforms. 9 年前
synth_waveform.h Do not assume AudioStream.h includes Arduino.h 8 年前
synth_waveform.md Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave. 10 年前
synth_whitenoise.cpp Fix more Teensy-LC compiler errors 9 年前
synth_whitenoise.h Do not assume AudioStream.h includes Arduino.h 8 年前

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