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

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