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Frank f0df80de7b Add F-RAM il y a 7 ans
examples Fix Tutorial 1-05 il y a 7 ans
extras Fix format error: header chunkSize can be 16, 18, or 40 il y a 7 ans
gui Add AudioEffectEnvelope releaseNoteOn il y a 7 ans
utility Replace DC removal algorithm with IIR HPF, 2 Hz il y a 7 ans
.gitignore Add documentation for new objects il y a 8 ans
.travis.yml Update Travis CI settings il y a 8 ans
Audio.h Add waveshaper documentation il y a 7 ans
AudioControl.h Add AudioSynthWaveformSine il y a 10 ans
README.md Update readme il y a 7 ans
analyze_fft256.cpp Initial work on FFT256 for Teensy-LC (untested) il y a 9 ans
analyze_fft256.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
analyze_fft1024.cpp Fix some Teensy-LC compiler errors il y a 9 ans
analyze_fft1024.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
analyze_notefreq.cpp Remove leftover debug code il y a 8 ans
analyze_notefreq.h NoteFrequency fixes il y a 8 ans
analyze_peak.cpp Add TODO for analyze peak optimization il y a 8 ans
analyze_peak.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
analyze_print.cpp Change AudioAnalyzePrint name API il y a 10 ans
analyze_print.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
analyze_rms.cpp Don't compile M4 code on LC (but LC still not working) il y a 8 ans
analyze_rms.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
analyze_tonedetect.cpp Fix more Teensy-LC compiler errors il y a 9 ans
analyze_tonedetect.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
control_ak4558.cpp Fixed control functions, examples, GUI elements il y a 9 ans
control_ak4558.h Fixed control functions, examples, GUI elements il y a 9 ans
control_cs4272.cpp Add CS4272 control (thanks William Hollender) il y a 8 ans
control_cs4272.h Add CS4272 control (thanks William Hollender) il y a 8 ans
control_cs42448.cpp Add AudioControlCS42448 il y a 7 ans
control_cs42448.h Add AudioControlCS42448 il y a 7 ans
control_sgtl5000.cpp Add ability to control two SGTL5000 chips il y a 8 ans
control_sgtl5000.h Add ability to control two SGTL5000 chips il y a 8 ans
control_wm8731.cpp AudioControlWM8731::inputLevel(float n) il y a 9 ans
control_wm8731.h AudioControlWM8731::inputLevel(float n) il y a 9 ans
data_ulaw.c Add missing open source license headers il y a 10 ans
data_waveforms.c Remove old AudioSynthWaveform il y a 10 ans
data_windows.c Add other window types for 1024 point FFT il y a 10 ans
effect_bitcrusher.cpp Fix compiler warning il y a 9 ans
effect_bitcrusher.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
effect_chorus.cpp Merge pull request #166 from FrankBoesing/patch-2 il y a 8 ans
effect_chorus.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
effect_delay.cpp Fix delay effect on Teensy 3.5 & 3.6 il y a 7 ans
effect_delay.h Fix delay effect on Teensy 3.5 & 3.6 il y a 7 ans
effect_delay_ext.cpp Add SPI external memory timing comment il y a 8 ans
effect_delay_ext.h Add F-RAM il y a 7 ans
effect_envelope.cpp Add AudioEffectEnvelope releaseNoteOn il y a 7 ans
effect_envelope.h Add AudioEffectEnvelope releaseNoteOn il y a 7 ans
effect_fade.cpp Fix minor compiler warning il y a 8 ans
effect_fade.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
effect_flange.cpp Calculation of delay_rate_incr il y a 8 ans
effect_flange.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
effect_midside.cpp Don't compile M4 code on LC (but LC still not working) il y a 8 ans
effect_midside.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
effect_multiply.cpp Fix more Teensy-LC compiler errors il y a 9 ans
effect_multiply.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
effect_reverb.cpp Add reverb effect, from Joao Rossi Filho il y a 8 ans
effect_reverb.h Add reverb effect, from Joao Rossi Filho il y a 8 ans
effect_waveshaper.cpp Accept floats instead of int16_ts for waveshape in shape() il y a 7 ans
effect_waveshaper.h Accept floats instead of int16_ts for waveshape in shape() il y a 7 ans
filter_biquad.cpp Don't cause a loud pop when changing biquad filter coefficients il y a 8 ans
filter_biquad.h Add shelving filter support for biquad il y a 8 ans
filter_fir.cpp Impove and document FIR filter il y a 10 ans
filter_fir.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
filter_fir.md Change FIR filter (as suggested by rheslip) to filter one channel instead of two. Updated example, added documenting file il y a 10 ans
filter_variable.cpp Fix more Teensy-LC compiler errors il y a 9 ans
filter_variable.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
input_adc.cpp Further precision increase eliminates DC offset il y a 7 ans
input_adc.h Fix indentation and move filtercoefficient to #define constant instead of int32_t variable il y a 7 ans
input_adcs.cpp Further precision increase eliminates DC offset il y a 7 ans
input_adcs.h Fix indentation and move filtercoefficient to #define constant instead of int32_t variable il y a 7 ans
input_i2s.cpp Use 64 bit frame size for I2S master mode il y a 7 ans
input_i2s.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
input_i2s_quad.cpp Quad input on Teensy 3.5 & 3.6 needs pin 38 il y a 7 ans
input_i2s_quad.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
input_tdm.cpp Add AudioInputTDM il y a 7 ans
input_tdm.h Add AudioInputTDM il y a 7 ans
keywords.txt Add AudioEffectEnvelope releaseNoteOn il y a 7 ans
library.json Let PlatformIO automatically detect Arduino v1.0 library format il y a 8 ans
library.properties Edit version string, for Arduino 1.6.11 compatibility il y a 8 ans
memcpy_audio.S Allow blocksizes 8 and 16 il y a 8 ans
memcpy_audio.h Add memcpy_tointerleaveQuad (thanks Frank) il y a 8 ans
mixer.cpp Fix some Teensy-LC compiler errors il y a 9 ans
mixer.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
multiplier.md Add a multiplier (by rheslip) il y a 10 ans
new_objects.md change format for new_objects files il y a 11 ans
output_dac.cpp More hardware defs il y a 8 ans
output_dac.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
output_dacs.cpp Fix AudioOutputAnalogStereo analogReference il y a 8 ans
output_dacs.h Add AudioOutputAnalogStereo il y a 8 ans
output_i2s.cpp Use 64 bit frame size for I2S master mode il y a 7 ans
output_i2s.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
output_i2s_quad.cpp Fix simultaneous quad input & output on Teensy 3.6 with CPU > 120 MHz il y a 7 ans
output_i2s_quad.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
output_pt8211.cpp Add a comment for TDA1543 il y a 7 ans
output_pt8211.h changed defines to be more specific il y a 8 ans
output_pwm.cpp Fix BUG for AUDIO_BLOCK_SAMPLES != 128 il y a 8 ans
output_pwm.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
output_spdif.cpp Support more clock speeds il y a 8 ans
output_spdif.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
output_tdm.cpp Add AudioInputTDM il y a 7 ans
output_tdm.h Add AudioInputTDM il y a 7 ans
play_memory.cpp Fix hard-coded 128 block size limits il y a 8 ans
play_memory.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
play_queue.cpp do not forget - your own addition :-) il y a 10 ans
play_queue.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
play_sd_raw.cpp Fix for two little bugs il y a 8 ans
play_sd_raw.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
play_sd_wav.cpp Fix AudioPlaySdWav status functions with LTO il y a 7 ans
play_sd_wav.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
play_serialflash_raw.cpp remove leftover debug code from AudioPlaySerialflashRaw il y a 9 ans
play_serialflash_raw.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
record_queue.cpp Fix harmless compiler warnings in AudioRecordQueue il y a 10 ans
record_queue.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
spi_interrupt.cpp Add SPI interrupt registration layer il y a 10 ans
spi_interrupt.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
synth_dc.cpp Fix hard-coded 128 block size limits il y a 8 ans
synth_dc.h Add AudioSynthWaveformDc read() il y a 7 ans
synth_karplusstrong.cpp Decay resonance (loop gain) slightly in Karplus Strong il y a 8 ans
synth_karplusstrong.h Add Synthesis Guitar example il y a 8 ans
synth_pinknoise.cpp Clean up harmless compiler warnings il y a 10 ans
synth_pinknoise.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
synth_pwm.cpp Minor optimization in AudioSynthWaveformPWM il y a 7 ans
synth_pwm.h Add AudioSynthWaveformPWM il y a 7 ans
synth_simple_drum.cpp Adding SimpleDrum synthesis object to audio library. il y a 8 ans
synth_simple_drum.h Adding SimpleDrum synthesis object to audio library. il y a 8 ans
synth_sine.cpp fix incorrect comment il y a 8 ans
synth_sine.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
synth_tonesweep.cpp fix tonesweep il y a 8 ans
synth_tonesweep.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
synth_waveform.cpp #144: Add the reverse sawtooth and sample-and-hold waveforms. il y a 9 ans
synth_waveform.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans
synth_waveform.md Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave. il y a 10 ans
synth_whitenoise.cpp Fix more Teensy-LC compiler errors il y a 9 ans
synth_whitenoise.h Do not assume AudioStream.h includes Arduino.h il y a 8 ans

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