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PaulStoffregen 8f0829c845 Ladder filter frequency modulation in "volts per octave" 3 yıl önce
docs Add issue template 6 yıl önce
examples Ladder filter frequency modulation in "volts per octave" 3 yıl önce
extras Add PROGMEM to output array 3 yıl önce
gui Merge pull request #378 from FrankBoesing/fix-doc 3 yıl önce
utility Fixes for Teensy LC 3 yıl önce
.gitignore Add documentation for new objects 8 yıl önce
.travis.yml Update Travis CI settings 8 yıl önce
Audio.h Add ladder filter, work-in-progress 3 yıl önce
AudioControl.h Add AudioSynthWaveformSine 10 yıl önce
Quantizer.cpp prevent clipping 4 yıl önce
Quantizer.h async spdif input added 4 yıl önce
README.md Mention Teensy 4.x in readme 3 yıl önce
Resampler.cpp added the maximum filter length to the parameters 4 yıl önce
Resampler.h added the maximum filter length to the parameters 4 yıl önce
analyze_fft256.cpp Fixes for Teensy LC 3 yıl önce
analyze_fft256.h Fix problem with optimized loops like do {} while (!myFFT.available()); 7 yıl önce
analyze_fft1024.cpp Import all of Frank's T4 edits 5 yıl önce
analyze_fft1024.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
analyze_notefreq.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 yıl önce
analyze_notefreq.h NoteFrequency fixes 8 yıl önce
analyze_peak.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 yıl önce
analyze_peak.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
analyze_print.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 yıl önce
analyze_print.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
analyze_rms.cpp Import all of Frank's T4 edits 5 yıl önce
analyze_rms.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
analyze_tonedetect.cpp Import all of Frank's T4 edits 5 yıl önce
analyze_tonedetect.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
async_input_spdif3.cpp FLASHMEM instead of PROGMEM for functions 4 yıl önce
async_input_spdif3.h prevent clipping 4 yıl önce
biquad.h async spdif input added 4 yıl önce
control_ak4558.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 yıl önce
control_ak4558.h Fixed control functions, examples, GUI elements 9 yıl önce
control_cs4272.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 yıl önce
control_cs4272.h Add CS4272 control (thanks William Hollender) 8 yıl önce
control_cs42448.cpp Add comment about strange CS42448 issue and undocumented bit 5 yıl önce
control_cs42448.h Add AudioControlCS42448 7 yıl önce
control_sgtl5000.cpp Merge pull request #373 from grahamwhaley/20201229_5k_hishelf 3 yıl önce
control_sgtl5000.h Merge pull request #334 from jurgenbelien/master 3 yıl önce
control_tlv320aic3206.cpp AIC3206: rename channel macros, add comments 6 yıl önce
control_tlv320aic3206.h AIC3206: rename channel macros, add comments 6 yıl önce
control_wm8731.cpp WM8731 has flaky I2C communication workaround 5 yıl önce
control_wm8731.h Add WM8731 inputSelect() function and update example 6 yıl önce
data_bandlimit_step.c Band limited versions of square and sawtooth added to AudioSynthWaveform and AudioSynthWaveformModulated 4 yıl önce
data_spdif.c use common spdif bcmlookup table 5 yıl önce
data_ulaw.c Add missing open source license headers 10 yıl önce
data_waveforms.c Remove old AudioSynthWaveform 10 yıl önce
data_windows.c Add other window types for 1024 point FFT 10 yıl önce
effect_bitcrusher.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 yıl önce
effect_bitcrusher.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
effect_chorus.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 yıl önce
effect_chorus.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
effect_combine.cpp Add AudioEffectDigitalCombine (from Bleep Labs) 6 yıl önce
effect_combine.h Move combine effect constants to class enum, not global scope 6 yıl önce
effect_delay.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 yıl önce
effect_delay.h Allow longer max delay effect on Teensy 4.0 5 yıl önce
effect_delay_ext.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 yıl önce
effect_delay_ext.h Add F-RAM 7 yıl önce
effect_envelope.cpp Add isActive() and isSustain() to envelope 6 yıl önce
effect_envelope.h Add isActive() and isSustain() to envelope 6 yıl önce
effect_fade.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 yıl önce
effect_fade.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
effect_flange.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 yıl önce
effect_flange.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
effect_freeverb.cpp Round down to 0 to avoid the buzzing noise issue reported here: 4 yıl önce
effect_freeverb.h Add AudioEffectFreeverbStereo 6 yıl önce
effect_granular.cpp Increase granular speed range, change public function to setSpeed() 6 yıl önce
effect_granular.h Increase granular speed range, change public function to setSpeed() 6 yıl önce
effect_midside.cpp Import all of Frank's T4 edits 5 yıl önce
effect_midside.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
effect_multiply.cpp Import all of Frank's T4 edits 5 yıl önce
effect_multiply.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
effect_rectifier.cpp Update effect_rectifier.cpp 4 yıl önce
effect_rectifier.h update keywords 4 yıl önce
effect_reverb.cpp memset: wrong size - element size is not 1 6 yıl önce
effect_reverb.h Add reverb effect, from Joao Rossi Filho 8 yıl önce
effect_waveshaper.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 yıl önce
effect_waveshaper.h Accept floats instead of int16_ts for waveshape in shape() 7 yıl önce
filter_biquad.cpp Add comment about noise shaping in biquad filter 5 yıl önce
filter_biquad.h Add shelving filter support for biquad 8 yıl önce
filter_fir.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 yıl önce
filter_fir.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
filter_fir.md Change FIR filter (as suggested by rheslip) to filter one channel instead of two. Updated example, added documenting file 10 yıl önce
filter_ladder.cpp Ladder filter frequency modulation in "volts per octave" 3 yıl önce
filter_ladder.h Ladder filter frequency modulation in "volts per octave" 3 yıl önce
filter_variable.cpp Update links in comments, to Laurent de Soras's exp2 approximation info 5 yıl önce
filter_variable.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
input_adc.cpp Fix ADC input on Teensy 3.x 4 yıl önce
input_adc.h Initial support for ADC input on Teensy 4.0 4 yıl önce
input_adcs.cpp align 4 yıl önce
input_adcs.h Fix indentation and move filtercoefficient to #define constant instead of int32_t variable 7 yıl önce
input_i2s.cpp Add I2sInput Master 3 yıl önce
input_i2s.h LC input slave 3 yıl önce
input_i2s2.cpp Update input_i2s2.cpp 4 yıl önce
input_i2s2.h various (see below) 5 yıl önce
input_i2s_hex.cpp add DMAMEM, fix warnings 4 yıl önce
input_i2s_hex.h 6 channel I2S input for Teensy 4.0 4 yıl önce
input_i2s_oct.cpp 8 channel I2S input for Teensy 4.0 4 yıl önce
input_i2s_oct.h 8 channel I2S input for Teensy 4.0 4 yıl önce
input_i2s_quad.cpp add DMAMEM, fix warnings 4 yıl önce
input_i2s_quad.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
input_pdm.cpp Kinetis K only 3 yıl önce
input_pdm.h Add AudioInputPDM 6 yıl önce
input_spdif3.cpp spdif-input 4 yıl önce
input_spdif3.h spdif-input 4 yıl önce
input_tdm.cpp Fix TDM input on Teensy 4.0 5 yıl önce
input_tdm.h Add AudioInputTDM 7 yıl önce
input_tdm2.cpp Fix TDM2 on Teensy 4.0 5 yıl önce
input_tdm2.h T4: Input TDM, Input TDM2 5 yıl önce
keywords.txt Change Ladder filter API to be similar to other filters 3 yıl önce
library.json Let PlatformIO automatically detect Arduino v1.0 library format 8 yıl önce
library.properties Edit version string, for Arduino 1.6.11 compatibility 8 yıl önce
memcpy_audio.S Import all of Frank's T4 edits 5 yıl önce
memcpy_audio.h Add memcpy_tointerleaveQuad (thanks Frank) 8 yıl önce
mixer.cpp Import all of Frank's T4 edits 5 yıl önce
mixer.h Import all of Frank's T4 edits 5 yıl önce
multiplier.md Add a multiplier (by rheslip) 10 yıl önce
new_objects.md change format for new_objects files 11 yıl önce
output_adat.cpp Update output_adat.cpp 4 yıl önce
output_adat.h Add ADAT 8 channel TOSLINK output by Ernstjan Freriks 7 yıl önce
output_dac.cpp Remove leftover debug printing 4 yıl önce
output_dac.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
output_dacs.cpp alignment 4 yıl önce
output_dacs.h Add AudioOutputAnalogStereo 8 yıl önce
output_i2s.cpp LC input slave 3 yıl önce
output_i2s.h Teensy LC AudioOutputI2S(+slave) 3 yıl önce
output_i2s2.cpp Fix simultaneous input & output on I2S2 4 yıl önce
output_i2s2.h various (see below) 5 yıl önce
output_i2s_hex.cpp 6 channel I2S output for Teensy 4.0 4 yıl önce
output_i2s_hex.h 6 channel I2S output for Teensy 4.0 4 yıl önce
output_i2s_oct.cpp 8 channel I2S output for Teensy 4.0 4 yıl önce
output_i2s_oct.h 8 channel I2S output for Teensy 4.0 4 yıl önce
output_i2s_quad.cpp Add comment with link to forum conversation 4 yıl önce
output_i2s_quad.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
output_mqs.cpp MQS: Play nice 3 yıl önce
output_mqs.h add output_mqs 5 yıl önce
output_pt8211.cpp LC has no I2S0_TCR1 3 yıl önce
output_pt8211.h Add Teensy LC Code for PT8211 3 yıl önce
output_pt8211_2.cpp done :) 3 yıl önce
output_pt8211_2.h add output_pt8211_2 5 yıl önce
output_pwm.cpp Disable not-yet-working PWM output for Teensy 4.x 4 yıl önce
output_pwm.h Add Teensy 4 PWM output 4 yıl önce
output_spdif.cpp Fix compile errors on Teensy LC 4 yıl önce
output_spdif.h SPDIF 5 yıl önce
output_spdif2.cpp PROGMEM->FLASHMEM 4 yıl önce
output_spdif2.h SPDIF 5 yıl önce
output_spdif3.cpp spdif-input 4 yıl önce
output_spdif3.h async spdif input -> friendclass of spdif output 4 yıl önce
output_tdm.cpp Fix compile errors on Teensy LC 4 yıl önce
output_tdm.h Add AudioInputTDM 7 yıl önce
output_tdm2.cpp Fix TDM2 on Teensy 4.0 5 yıl önce
output_tdm2.h various (see below) 5 yıl önce
play_memory.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 yıl önce
play_memory.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
play_queue.cpp Allow larger queues on Teensy 3.5, 3.6, 4.0 4 yıl önce
play_queue.h Allow larger queues on Teensy 3.5, 3.6, 4.0 4 yıl önce
play_sd_raw.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 yıl önce
play_sd_raw.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
play_sd_wav.cpp allowing position + length to work during pause 4 yıl önce
play_sd_wav.h sdwav play/pause initial commit 4 yıl önce
play_serialflash_raw.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 yıl önce
play_serialflash_raw.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
record_queue.cpp Allow larger queues on Teensy 3.5, 3.6, 4.0 4 yıl önce
record_queue.h Allow larger queues on Teensy 3.5, 3.6, 4.0 4 yıl önce
spi_interrupt.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 yıl önce
spi_interrupt.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
synth_dc.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 yıl önce
synth_dc.h Import all of Frank's T4 edits 5 yıl önce
synth_karplusstrong.cpp Fix compile errors on Teensy LC 4 yıl önce
synth_karplusstrong.h Add Synthesis Guitar example 8 yıl önce
synth_pinknoise.cpp Include Arduino.h first in all cpp files, for precompiled header speedup 6 yıl önce
synth_pinknoise.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
synth_pwm.cpp Import all of Frank's T4 edits 5 yıl önce
synth_pwm.h Add AudioSynthWaveformPWM 7 yıl önce
synth_simple_drum.cpp Fix compile errors on Teensy LC 4 yıl önce
synth_simple_drum.h Adding SimpleDrum synthesis object to audio library. 8 yıl önce
synth_sine.cpp Import all of Frank's T4 edits 5 yıl önce
synth_sine.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce
synth_tonesweep.cpp Fix discontinuity in frequency stepping in tonesweep, remove unnecessary/incorrect masking of phase 4 yıl önce
synth_tonesweep.h ToneSweep improvements (thanks Pio) 7 yıl önce
synth_waveform.cpp Merge pull request #362 from MarkTillotson/fix_phase_modulation 3 yıl önce
synth_waveform.h Improve handling of pulse waveforms to allow sub-sample width pulses and finesse remaining issues with modulation 4 yıl önce
synth_waveform.md Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave. 10 yıl önce
synth_wavetable.cpp Fix compile errors on Teensy LC 4 yıl önce
synth_wavetable.h Avoid global Wavetable defines 6 yıl önce
synth_whitenoise.cpp Import all of Frank's T4 edits 5 yıl önce
synth_whitenoise.h Do not assume AudioStream.h includes Arduino.h 8 yıl önce

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