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PaulStoffregen 35641934e0 Initial work on FFT256 for Teensy-LC (untested) 9 jaren geleden
examples Add Bitcrusher effect (thanks Pensive) 9 jaren geleden
gui Add Memoryboard4 documentation 9 jaren geleden
utility Make input ADC and output DAC play nicely together 10 jaren geleden
Audio.h Begin work on AudioEffectDelayExternal... 9 jaren geleden
AudioControl.h Add AudioSynthWaveformSine 10 jaren geleden
README.md Update readme still yet again 10 jaren geleden
analyze_fft256.cpp Initial work on FFT256 for Teensy-LC (untested) 9 jaren geleden
analyze_fft256.h Initial work on FFT256 for Teensy-LC (untested) 9 jaren geleden
analyze_fft1024.cpp Add proper API to FFT objects 10 jaren geleden
analyze_fft1024.h Add proper API to FFT objects 10 jaren geleden
analyze_peak.cpp Change peak detect API to conform to library conventions 10 jaren geleden
analyze_peak.h Change peak detect API to conform to library conventions 10 jaren geleden
analyze_print.cpp Change AudioAnalyzePrint name API 10 jaren geleden
analyze_print.h Change AudioAnalyzePrint name API 10 jaren geleden
analyze_tonedetect.cpp mode documentation in the GUI 10 jaren geleden
analyze_tonedetect.h Add MIT license 10 jaren geleden
control_sgtl5000.cpp Simplify & document SGTL5000 control 10 jaren geleden
control_sgtl5000.h Document sgtl5000 10 jaren geleden
control_wm8731.cpp Update WM8731 example 10 jaren geleden
control_wm8731.h Update WM8731 example 10 jaren geleden
data_ulaw.c Add missing open source license headers 10 jaren geleden
data_waveforms.c Remove old AudioSynthWaveform 10 jaren geleden
data_windows.c Add other window types for 1024 point FFT 10 jaren geleden
effect_bitcrusher.cpp Add Bitcrusher effect (thanks Pensive) 9 jaren geleden
effect_bitcrusher.h Add Bitcrusher effect (thanks Pensive) 9 jaren geleden
effect_chorus.cpp Change Chrous effect to one channel 10 jaren geleden
effect_chorus.h remove unimplemented stop() 10 jaren geleden
effect_delay.cpp Remove unused multiplier 10 jaren geleden
effect_delay.h Add AudioEffectDelay 10 jaren geleden
effect_delay_ext.cpp Add support for Frank's 6-chip Memoryboard4 (AUDIO_MEMORY_MEMORYBOARD) 9 jaren geleden
effect_delay_ext.h Add support for Frank's 6-chip Memoryboard4 (AUDIO_MEMORY_MEMORYBOARD) 9 jaren geleden
effect_envelope.cpp Add AudioEffectEnvelope 10 jaren geleden
effect_envelope.h Add AudioEffectEnvelope 10 jaren geleden
effect_fade.cpp Add MIT license 10 jaren geleden
effect_fade.h Add MIT license 10 jaren geleden
effect_flange.cpp Change Flange effect to one channel 10 jaren geleden
effect_flange.h remove unimplemented stop() 10 jaren geleden
effect_multiply.cpp Add AudioEffectMultiply 10 jaren geleden
effect_multiply.h Add AudioEffectMultiply 10 jaren geleden
filter_biquad.cpp Improve Biquad filter 10 jaren geleden
filter_biquad.h Improve Biquad filter 10 jaren geleden
filter_fir.cpp Impove and document FIR filter 10 jaren geleden
filter_fir.h Impove and document FIR filter 10 jaren geleden
filter_fir.md Change FIR filter (as suggested by rheslip) to filter one channel instead of two. Updated example, added documenting file 10 jaren geleden
filter_variable.cpp Add credits/references for numerical approximation algorithms 10 jaren geleden
filter_variable.h Finish AudioFilterStateVariable (signal control of corner frequency) 10 jaren geleden
input_adc.cpp Fix AudioInputAnalog 10 jaren geleden
input_adc.h Fix AudioInputAnalog 10 jaren geleden
input_i2s.cpp Avoid allocating unneeded DMA channels 10 jaren geleden
input_i2s.h Use DMAChannel begin() 10 jaren geleden
keywords.txt Begin work on AudioEffectDelayExternal... 9 jaren geleden
library.json Fix JSON syntax 10 jaren geleden
library.properties Add library.properties 9 jaren geleden
mixer.cpp Add MIT license 10 jaren geleden
mixer.h Add MIT license 10 jaren geleden
multiplier.md Add a multiplier (by rheslip) 10 jaren geleden
new_objects.md change format for new_objects files 11 jaren geleden
output_dac.cpp Avoid allocating unneeded DMA channels 10 jaren geleden
output_dac.h Use DMAChannel begin() 10 jaren geleden
output_i2s.cpp Avoid allocating unneeded DMA channels 10 jaren geleden
output_i2s.h Use DMAChannel begin() 10 jaren geleden
output_pwm.cpp Avoid allocating unneeded DMA channels 10 jaren geleden
output_pwm.h Make input ADC and output DAC play nicely together 10 jaren geleden
output_spdif.cpp added muting to zero blocks 9 jaren geleden
output_spdif.h added mute_PCM() - sets or unsets VALID in VUCP (and adjusts PARITY) 9 jaren geleden
play_memory.cpp Add status and position functions to AudioPlayMemory 10 jaren geleden
play_memory.h Add status and position functions to AudioPlayMemory 10 jaren geleden
play_queue.cpp do not forget - your own addition :-) 10 jaren geleden
play_queue.h do not forget - your own addition :-) 10 jaren geleden
play_sd_raw.cpp Do not disable all interrupts while opening RAW files 9 jaren geleden
play_sd_raw.h Fix status functions in AudioPlaySdRaw 10 jaren geleden
play_sd_wav.cpp Fix stereo WAV file startup & end (first and last 3 milliseconds) 9 jaren geleden
play_sd_wav.h Fix audible click at end of Wav file playing 10 jaren geleden
play_serialflash_raw.cpp Add AudioPlaySerialflashRaw 9 jaren geleden
play_serialflash_raw.h Add AudioPlaySerialflashRaw 9 jaren geleden
record_queue.cpp Fix harmless compiler warnings in AudioRecordQueue 10 jaren geleden
record_queue.h Finish AudioRecordQueue and Record example 10 jaren geleden
spi_interrupt.cpp Add SPI interrupt registration layer 10 jaren geleden
spi_interrupt.h register SPI interrupt when playing WAV & RAW files 10 jaren geleden
synth_dc.cpp Add AudioSynthWaveformDc 10 jaren geleden
synth_dc.h simplify overflow checks somewhat 10 jaren geleden
synth_pinknoise.cpp Clean up harmless compiler warnings 10 jaren geleden
synth_pinknoise.h Add AudioSynthNoisePink 10 jaren geleden
synth_sine.cpp Add MemoryAndCpuUsage example 10 jaren geleden
synth_sine.h Add phase() to waveform objects 10 jaren geleden
synth_tonesweep.cpp Fix up synth_tonesweep and the example to conform (more closely) to the naming conventions 10 jaren geleden
synth_tonesweep.h Clean up harmless compiler warnings 10 jaren geleden
synth_waveform.cpp Add simple pulse waveform 10 jaren geleden
synth_waveform.h Clean up harmless compiler warnings 10 jaren geleden
synth_waveform.md Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave. 10 jaren geleden
synth_whitenoise.cpp Fix multiple white noise instances 10 jaren geleden
synth_whitenoise.h Fix multiple white noise instances 10 jaren geleden

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