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PaulStoffregen 9b44b17006 Document bandlimit waveforms 3 лет назад
docs Add issue template 6 лет назад
examples Ladder filter frequency modulation in "volts per octave" 3 лет назад
extras Add PROGMEM to output array 3 лет назад
gui Document bandlimit waveforms 3 лет назад
utility Fixes for Teensy LC 3 лет назад
.gitignore Add documentation for new objects 8 лет назад
.travis.yml Update Travis CI settings 8 лет назад
Audio.h Add ladder filter, work-in-progress 3 лет назад
AudioControl.h Add AudioSynthWaveformSine 10 лет назад
Quantizer.cpp prevent clipping 4 лет назад
Quantizer.h async spdif input added 4 лет назад
README.md Mention Teensy 4.x in readme 3 лет назад
Resampler.cpp added the maximum filter length to the parameters 4 лет назад
Resampler.h added the maximum filter length to the parameters 4 лет назад
analyze_fft256.cpp Fixes for Teensy LC 3 лет назад
analyze_fft256.h Fix problem with optimized loops like do {} while (!myFFT.available()); 7 лет назад
analyze_fft1024.cpp Import all of Frank's T4 edits 5 лет назад
analyze_fft1024.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
analyze_notefreq.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 лет назад
analyze_notefreq.h NoteFrequency fixes 8 лет назад
analyze_peak.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 лет назад
analyze_peak.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
analyze_print.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 лет назад
analyze_print.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
analyze_rms.cpp Import all of Frank's T4 edits 5 лет назад
analyze_rms.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
analyze_tonedetect.cpp Import all of Frank's T4 edits 5 лет назад
analyze_tonedetect.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
async_input_spdif3.cpp FLASHMEM instead of PROGMEM for functions 4 лет назад
async_input_spdif3.h prevent clipping 4 лет назад
biquad.h async spdif input added 4 лет назад
control_ak4558.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 лет назад
control_ak4558.h Fixed control functions, examples, GUI elements 9 лет назад
control_cs4272.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 лет назад
control_cs4272.h Add CS4272 control (thanks William Hollender) 8 лет назад
control_cs42448.cpp Add comment about strange CS42448 issue and undocumented bit 5 лет назад
control_cs42448.h Add AudioControlCS42448 7 лет назад
control_sgtl5000.cpp Merge pull request #373 from grahamwhaley/20201229_5k_hishelf 3 лет назад
control_sgtl5000.h Merge pull request #334 from jurgenbelien/master 3 лет назад
control_tlv320aic3206.cpp AIC3206: rename channel macros, add comments 6 лет назад
control_tlv320aic3206.h AIC3206: rename channel macros, add comments 6 лет назад
control_wm8731.cpp WM8731 has flaky I2C communication workaround 5 лет назад
control_wm8731.h Add WM8731 inputSelect() function and update example 6 лет назад
data_bandlimit_step.c Band limited versions of square and sawtooth added to AudioSynthWaveform and AudioSynthWaveformModulated 4 лет назад
data_spdif.c use common spdif bcmlookup table 5 лет назад
data_ulaw.c Add missing open source license headers 10 лет назад
data_waveforms.c Remove old AudioSynthWaveform 10 лет назад
data_windows.c Add other window types for 1024 point FFT 10 лет назад
effect_bitcrusher.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 лет назад
effect_bitcrusher.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
effect_chorus.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 лет назад
effect_chorus.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
effect_combine.cpp Add AudioEffectDigitalCombine (from Bleep Labs) 6 лет назад
effect_combine.h Move combine effect constants to class enum, not global scope 6 лет назад
effect_delay.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 лет назад
effect_delay.h Allow longer max delay effect on Teensy 4.0 5 лет назад
effect_delay_ext.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 лет назад
effect_delay_ext.h Add F-RAM 7 лет назад
effect_envelope.cpp Add isActive() and isSustain() to envelope 6 лет назад
effect_envelope.h Add isActive() and isSustain() to envelope 6 лет назад
effect_fade.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 лет назад
effect_fade.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
effect_flange.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 лет назад
effect_flange.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
effect_freeverb.cpp Round down to 0 to avoid the buzzing noise issue reported here: 4 лет назад
effect_freeverb.h Add AudioEffectFreeverbStereo 6 лет назад
effect_granular.cpp Increase granular speed range, change public function to setSpeed() 6 лет назад
effect_granular.h Increase granular speed range, change public function to setSpeed() 6 лет назад
effect_midside.cpp Import all of Frank's T4 edits 5 лет назад
effect_midside.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
effect_multiply.cpp Import all of Frank's T4 edits 5 лет назад
effect_multiply.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
effect_rectifier.cpp Update effect_rectifier.cpp 4 лет назад
effect_rectifier.h update keywords 4 лет назад
effect_reverb.cpp memset: wrong size - element size is not 1 6 лет назад
effect_reverb.h Add reverb effect, from Joao Rossi Filho 8 лет назад
effect_waveshaper.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 лет назад
effect_waveshaper.h Accept floats instead of int16_ts for waveshape in shape() 7 лет назад
filter_biquad.cpp Add comment about noise shaping in biquad filter 5 лет назад
filter_biquad.h Add shelving filter support for biquad 8 лет назад
filter_fir.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 лет назад
filter_fir.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
filter_fir.md Change FIR filter (as suggested by rheslip) to filter one channel instead of two. Updated example, added documenting file 10 лет назад
filter_ladder.cpp Limit ladder filter to safer maximum values 3 лет назад
filter_ladder.h Ladder filter frequency modulation in "volts per octave" 3 лет назад
filter_variable.cpp Update links in comments, to Laurent de Soras's exp2 approximation info 5 лет назад
filter_variable.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
input_adc.cpp Fix ADC input on Teensy 3.x 4 лет назад
input_adc.h Initial support for ADC input on Teensy 4.0 4 лет назад
input_adcs.cpp align 4 лет назад
input_adcs.h Fix indentation and move filtercoefficient to #define constant instead of int32_t variable 7 лет назад
input_i2s.cpp Add I2sInput Master 3 лет назад
input_i2s.h LC input slave 3 лет назад
input_i2s2.cpp Update input_i2s2.cpp 4 лет назад
input_i2s2.h various (see below) 5 лет назад
input_i2s_hex.cpp add DMAMEM, fix warnings 4 лет назад
input_i2s_hex.h 6 channel I2S input for Teensy 4.0 4 лет назад
input_i2s_oct.cpp 8 channel I2S input for Teensy 4.0 4 лет назад
input_i2s_oct.h 8 channel I2S input for Teensy 4.0 4 лет назад
input_i2s_quad.cpp add DMAMEM, fix warnings 4 лет назад
input_i2s_quad.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
input_pdm.cpp Kinetis K only 3 лет назад
input_pdm.h Add AudioInputPDM 6 лет назад
input_spdif3.cpp spdif-input 4 лет назад
input_spdif3.h spdif-input 4 лет назад
input_tdm.cpp Fix TDM input on Teensy 4.0 5 лет назад
input_tdm.h Add AudioInputTDM 7 лет назад
input_tdm2.cpp Fix TDM2 on Teensy 4.0 5 лет назад
input_tdm2.h T4: Input TDM, Input TDM2 5 лет назад
keywords.txt Change Ladder filter API to be similar to other filters 3 лет назад
library.json Let PlatformIO automatically detect Arduino v1.0 library format 8 лет назад
library.properties Edit version string, for Arduino 1.6.11 compatibility 8 лет назад
memcpy_audio.S Import all of Frank's T4 edits 5 лет назад
memcpy_audio.h Add memcpy_tointerleaveQuad (thanks Frank) 8 лет назад
mixer.cpp Import all of Frank's T4 edits 5 лет назад
mixer.h Import all of Frank's T4 edits 5 лет назад
multiplier.md Add a multiplier (by rheslip) 10 лет назад
new_objects.md change format for new_objects files 11 лет назад
output_adat.cpp Update output_adat.cpp 4 лет назад
output_adat.h Add ADAT 8 channel TOSLINK output by Ernstjan Freriks 7 лет назад
output_dac.cpp Remove leftover debug printing 4 лет назад
output_dac.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
output_dacs.cpp alignment 4 лет назад
output_dacs.h Add AudioOutputAnalogStereo 8 лет назад
output_i2s.cpp LC input slave 3 лет назад
output_i2s.h Teensy LC AudioOutputI2S(+slave) 3 лет назад
output_i2s2.cpp Fix simultaneous input & output on I2S2 4 лет назад
output_i2s2.h various (see below) 5 лет назад
output_i2s_hex.cpp 6 channel I2S output for Teensy 4.0 4 лет назад
output_i2s_hex.h 6 channel I2S output for Teensy 4.0 4 лет назад
output_i2s_oct.cpp 8 channel I2S output for Teensy 4.0 4 лет назад
output_i2s_oct.h 8 channel I2S output for Teensy 4.0 4 лет назад
output_i2s_quad.cpp Add comment with link to forum conversation 4 лет назад
output_i2s_quad.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
output_mqs.cpp MQS: Play nice 3 лет назад
output_mqs.h add output_mqs 5 лет назад
output_pt8211.cpp LC has no I2S0_TCR1 3 лет назад
output_pt8211.h Add Teensy LC Code for PT8211 3 лет назад
output_pt8211_2.cpp done :) 3 лет назад
output_pt8211_2.h add output_pt8211_2 5 лет назад
output_pwm.cpp Disable not-yet-working PWM output for Teensy 4.x 4 лет назад
output_pwm.h Add Teensy 4 PWM output 4 лет назад
output_spdif.cpp Fix compile errors on Teensy LC 4 лет назад
output_spdif.h SPDIF 5 лет назад
output_spdif2.cpp PROGMEM->FLASHMEM 4 лет назад
output_spdif2.h SPDIF 5 лет назад
output_spdif3.cpp spdif-input 4 лет назад
output_spdif3.h async spdif input -> friendclass of spdif output 4 лет назад
output_tdm.cpp Fix compile errors on Teensy LC 4 лет назад
output_tdm.h Add AudioInputTDM 7 лет назад
output_tdm2.cpp Fix TDM2 on Teensy 4.0 5 лет назад
output_tdm2.h various (see below) 5 лет назад
play_memory.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 лет назад
play_memory.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
play_queue.cpp Allow larger queues on Teensy 3.5, 3.6, 4.0 4 лет назад
play_queue.h Allow larger queues on Teensy 3.5, 3.6, 4.0 4 лет назад
play_sd_raw.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 лет назад
play_sd_raw.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
play_sd_wav.cpp allowing position + length to work during pause 4 лет назад
play_sd_wav.h sdwav play/pause initial commit 4 лет назад
play_serialflash_raw.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 лет назад
play_serialflash_raw.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
record_queue.cpp Allow larger queues on Teensy 3.5, 3.6, 4.0 4 лет назад
record_queue.h Allow larger queues on Teensy 3.5, 3.6, 4.0 4 лет назад
spi_interrupt.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 лет назад
spi_interrupt.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
synth_dc.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 лет назад
synth_dc.h Import all of Frank's T4 edits 5 лет назад
synth_karplusstrong.cpp Fix compile errors on Teensy LC 4 лет назад
synth_karplusstrong.h Add Synthesis Guitar example 8 лет назад
synth_pinknoise.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 лет назад
synth_pinknoise.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
synth_pwm.cpp Import all of Frank's T4 edits 5 лет назад
synth_pwm.h Add AudioSynthWaveformPWM 7 лет назад
synth_simple_drum.cpp Fix compile errors on Teensy LC 4 лет назад
synth_simple_drum.h Adding SimpleDrum synthesis object to audio library. 8 лет назад
synth_sine.cpp Import all of Frank's T4 edits 5 лет назад
synth_sine.h Do not assume AudioStream.h includes Arduino.h 8 лет назад
synth_tonesweep.cpp Fix discontinuity in frequency stepping in tonesweep, remove unnecessary/incorrect masking of phase 4 лет назад
synth_tonesweep.h ToneSweep improvements (thanks Pio) 7 лет назад
synth_waveform.cpp Merge pull request #362 from MarkTillotson/fix_phase_modulation 3 лет назад
synth_waveform.h Improve handling of pulse waveforms to allow sub-sample width pulses and finesse remaining issues with modulation 4 лет назад
synth_waveform.md Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave. 10 лет назад
synth_wavetable.cpp Fix compile errors on Teensy LC 4 лет назад
synth_wavetable.h Avoid global Wavetable defines 6 лет назад
synth_whitenoise.cpp Import all of Frank's T4 edits 5 лет назад
synth_whitenoise.h Do not assume AudioStream.h includes Arduino.h 8 лет назад

README.md

Teensy Audio Library

16 bit, 44.1 kHz streaming audio library for Teensy 3.x and Teensy 4.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