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PaulStoffregen 86b9b9ceb1 Add documentation for new objects 8 年之前
examples Add WaterfallSpectrum example, from Nathaniel Quillin's SuperCon Badge Hack 8 年之前
extras Len noticed a bug in binary velocity output 8 年之前
gui Add documentation for new objects 8 年之前
utility Support more clock speeds 8 年之前
.gitignore Add documentation for new objects 8 年之前
.travis.yml Update Travis CI settings 8 年之前
Audio.h Add reverb effect, from Joao Rossi Filho 8 年之前
AudioControl.h Add AudioSynthWaveformSine 10 年之前
README.md remove Travis CI status from readme (it's too unreliable) 8 年之前
analyze_fft256.cpp Initial work on FFT256 for Teensy-LC (untested) 9 年之前
analyze_fft256.h Do not assume AudioStream.h includes Arduino.h 8 年之前
analyze_fft1024.cpp Fix some Teensy-LC compiler errors 9 年之前
analyze_fft1024.h Do not assume AudioStream.h includes Arduino.h 8 年之前
analyze_notefreq.cpp Remove leftover debug code 8 年之前
analyze_notefreq.h NoteFrequency fixes 8 年之前
analyze_peak.cpp Add TODO for analyze peak optimization 8 年之前
analyze_peak.h Do not assume AudioStream.h includes Arduino.h 8 年之前
analyze_print.cpp Change AudioAnalyzePrint name API 10 年之前
analyze_print.h Do not assume AudioStream.h includes Arduino.h 8 年之前
analyze_rms.cpp Don't compile M4 code on LC (but LC still not working) 8 年之前
analyze_rms.h Do not assume AudioStream.h includes Arduino.h 8 年之前
analyze_tonedetect.cpp Fix more Teensy-LC compiler errors 9 年之前
analyze_tonedetect.h Do not assume AudioStream.h includes Arduino.h 8 年之前
control_ak4558.cpp Fixed control functions, examples, GUI elements 9 年之前
control_ak4558.h Fixed control functions, examples, GUI elements 9 年之前
control_cs4272.cpp Add CS4272 control (thanks William Hollender) 8 年之前
control_cs4272.h Add CS4272 control (thanks William Hollender) 8 年之前
control_sgtl5000.cpp Add ability to control two SGTL5000 chips 8 年之前
control_sgtl5000.h Add ability to control two SGTL5000 chips 8 年之前
control_wm8731.cpp AudioControlWM8731::inputLevel(float n) 9 年之前
control_wm8731.h AudioControlWM8731::inputLevel(float n) 9 年之前
data_ulaw.c Add missing open source license headers 10 年之前
data_waveforms.c Remove old AudioSynthWaveform 10 年之前
data_windows.c Add other window types for 1024 point FFT 10 年之前
effect_bitcrusher.cpp Fix compiler warning 9 年之前
effect_bitcrusher.h Do not assume AudioStream.h includes Arduino.h 8 年之前
effect_chorus.cpp Merge pull request #166 from FrankBoesing/patch-2 8 年之前
effect_chorus.h Do not assume AudioStream.h includes Arduino.h 8 年之前
effect_delay.cpp Remove unused multiplier 10 年之前
effect_delay.h Do not assume AudioStream.h includes Arduino.h 8 年之前
effect_delay_ext.cpp Add SPI external memory timing comment 8 年之前
effect_delay_ext.h Do not assume AudioStream.h includes Arduino.h 8 年之前
effect_envelope.cpp Add AudioEffectEnvelope 10 年之前
effect_envelope.h Do not assume AudioStream.h includes Arduino.h 8 年之前
effect_fade.cpp Add MIT license 10 年之前
effect_fade.h Do not assume AudioStream.h includes Arduino.h 8 年之前
effect_flange.cpp Calculation of delay_rate_incr 8 年之前
effect_flange.h Do not assume AudioStream.h includes Arduino.h 8 年之前
effect_midside.cpp Don't compile M4 code on LC (but LC still not working) 8 年之前
effect_midside.h Do not assume AudioStream.h includes Arduino.h 8 年之前
effect_multiply.cpp Fix more Teensy-LC compiler errors 9 年之前
effect_multiply.h Do not assume AudioStream.h includes Arduino.h 8 年之前
effect_reverb.cpp Add reverb effect, from Joao Rossi Filho 8 年之前
effect_reverb.h Add reverb effect, from Joao Rossi Filho 8 年之前
filter_biquad.cpp Don't cause a loud pop when changing biquad filter coefficients 8 年之前
filter_biquad.h Add shelving filter support for biquad 8 年之前
filter_fir.cpp Impove and document FIR filter 10 年之前
filter_fir.h Do not assume AudioStream.h includes Arduino.h 8 年之前
filter_fir.md Change FIR filter (as suggested by rheslip) to filter one channel instead of two. Updated example, added documenting file 10 年之前
filter_variable.cpp Fix more Teensy-LC compiler errors 9 年之前
filter_variable.h Do not assume AudioStream.h includes Arduino.h 8 年之前
input_adc.cpp Fix ADC input with various clock speeds 8 年之前
input_adc.h Fix the DC offset computation. The previous computation would occassionally get stuck with an incorrect offset. 8 年之前
input_adcs.cpp Fix compile error on Teensy 3.0 8 年之前
input_adcs.h Add AudioInputAnalogStereo (work in progress...) 8 年之前
input_i2s.cpp Fix more Teensy-LC compiler errors 9 年之前
input_i2s.h Do not assume AudioStream.h includes Arduino.h 8 年之前
input_i2s_quad.cpp More hardware defs 8 年之前
input_i2s_quad.h Do not assume AudioStream.h includes Arduino.h 8 年之前
keywords.txt Add reverb effect, from Joao Rossi Filho 8 年之前
library.json Let PlatformIO automatically detect Arduino v1.0 library format 8 年之前
library.properties Edit version string, for Arduino 1.6.11 compatibility 8 年之前
memcpy_audio.S More hardware defs 8 年之前
memcpy_audio.h Add memcpy_tointerleaveQuad (thanks Frank) 8 年之前
mixer.cpp Fix some Teensy-LC compiler errors 9 年之前
mixer.h Do not assume AudioStream.h includes Arduino.h 8 年之前
multiplier.md Add a multiplier (by rheslip) 10 年之前
new_objects.md change format for new_objects files 11 年之前
output_dac.cpp More hardware defs 8 年之前
output_dac.h Do not assume AudioStream.h includes Arduino.h 8 年之前
output_dacs.cpp Fix AudioOutputAnalogStereo analogReference 8 年之前
output_dacs.h Add AudioOutputAnalogStereo 8 年之前
output_i2s.cpp Fix I2S output when also using I2S input with CPU > 120 MHz 8 年之前
output_i2s.h Do not assume AudioStream.h includes Arduino.h 8 年之前
output_i2s_quad.cpp Support more clock speeds 8 年之前
output_i2s_quad.h Do not assume AudioStream.h includes Arduino.h 8 年之前
output_pt8211.cpp Bugfix re: noise when no blocks are available 8 年之前
output_pt8211.h changed defines to be more specific 8 年之前
output_pwm.cpp Fix more Teensy-LC compiler errors 9 年之前
output_pwm.h Do not assume AudioStream.h includes Arduino.h 8 年之前
output_spdif.cpp Support more clock speeds 8 年之前
output_spdif.h Do not assume AudioStream.h includes Arduino.h 8 年之前
play_memory.cpp Add status and position functions to AudioPlayMemory 10 年之前
play_memory.h Do not assume AudioStream.h includes Arduino.h 8 年之前
play_queue.cpp do not forget - your own addition :-) 10 年之前
play_queue.h Do not assume AudioStream.h includes Arduino.h 8 年之前
play_sd_raw.cpp Do not disable all interrupts while opening RAW files 9 年之前
play_sd_raw.h Do not assume AudioStream.h includes Arduino.h 8 年之前
play_sd_wav.cpp fix problem with left+right channels being swapped 8 年之前
play_sd_wav.h Do not assume AudioStream.h includes Arduino.h 8 年之前
play_serialflash_raw.cpp remove leftover debug code from AudioPlaySerialflashRaw 9 年之前
play_serialflash_raw.h Do not assume AudioStream.h includes Arduino.h 8 年之前
record_queue.cpp Fix harmless compiler warnings in AudioRecordQueue 10 年之前
record_queue.h Do not assume AudioStream.h includes Arduino.h 8 年之前
spi_interrupt.cpp Add SPI interrupt registration layer 10 年之前
spi_interrupt.h Do not assume AudioStream.h includes Arduino.h 8 年之前
synth_dc.cpp Add AudioSynthWaveformDc 10 年之前
synth_dc.h Do not assume AudioStream.h includes Arduino.h 8 年之前
synth_karplusstrong.cpp Decay resonance (loop gain) slightly in Karplus Strong 8 年之前
synth_karplusstrong.h Add Synthesis Guitar example 8 年之前
synth_pinknoise.cpp Clean up harmless compiler warnings 10 年之前
synth_pinknoise.h Do not assume AudioStream.h includes Arduino.h 8 年之前
synth_simple_drum.cpp Adding SimpleDrum synthesis object to audio library. 8 年之前
synth_simple_drum.h Adding SimpleDrum synthesis object to audio library. 8 年之前
synth_sine.cpp fix incorrect comment 8 年之前
synth_sine.h Do not assume AudioStream.h includes Arduino.h 8 年之前
synth_tonesweep.cpp fix tonesweep 8 年之前
synth_tonesweep.h Do not assume AudioStream.h includes Arduino.h 8 年之前
synth_waveform.cpp #144: Add the reverse sawtooth and sample-and-hold waveforms. 9 年之前
synth_waveform.h Do not assume AudioStream.h includes Arduino.h 8 年之前
synth_waveform.md Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave. 10 年之前
synth_whitenoise.cpp Fix more Teensy-LC compiler errors 9 年之前
synth_whitenoise.h Do not assume AudioStream.h includes Arduino.h 8 年之前

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/

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