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teensy-audio
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PaulStoffregen 14fd8f907b Fix some Teensy-LC compiler errors 9 年前
examples Add Bitcrusher effect (thanks Pensive) 9 年前
gui Add Memoryboard4 documentation 9 年前
utility Fix some Teensy-LC compiler errors 9 年前
Audio.h Begin work on AudioEffectDelayExternal... 9 年前
AudioControl.h Add AudioSynthWaveformSine 10 年前
README.md Update readme still yet again 10 年前
analyze_fft256.cpp Initial work on FFT256 for Teensy-LC (untested) 9 年前
analyze_fft256.h Initial work on FFT256 for Teensy-LC (untested) 9 年前
analyze_fft1024.cpp Fix some Teensy-LC compiler errors 9 年前
analyze_fft1024.h Add proper API to FFT objects 10 年前
analyze_peak.cpp Change peak detect API to conform to library conventions 10 年前
analyze_peak.h Change peak detect API to conform to library conventions 10 年前
analyze_print.cpp Change AudioAnalyzePrint name API 10 年前
analyze_print.h Change AudioAnalyzePrint name API 10 年前
analyze_tonedetect.cpp mode documentation in the GUI 10 年前
analyze_tonedetect.h Add MIT license 10 年前
control_sgtl5000.cpp Simplify & document SGTL5000 control 10 年前
control_sgtl5000.h Document sgtl5000 10 年前
control_wm8731.cpp Update WM8731 example 10 年前
control_wm8731.h Update WM8731 example 10 年前
data_ulaw.c Add missing open source license headers 10 年前
data_waveforms.c Remove old AudioSynthWaveform 10 年前
data_windows.c Add other window types for 1024 point FFT 10 年前
effect_bitcrusher.cpp Add Bitcrusher effect (thanks Pensive) 9 年前
effect_bitcrusher.h Add Bitcrusher effect (thanks Pensive) 9 年前
effect_chorus.cpp Change Chrous effect to one channel 10 年前
effect_chorus.h remove unimplemented stop() 10 年前
effect_delay.cpp Remove unused multiplier 10 年前
effect_delay.h Add AudioEffectDelay 10 年前
effect_delay_ext.cpp Add support for Frank's 6-chip Memoryboard4 (AUDIO_MEMORY_MEMORYBOARD) 9 年前
effect_delay_ext.h Add support for Frank's 6-chip Memoryboard4 (AUDIO_MEMORY_MEMORYBOARD) 9 年前
effect_envelope.cpp Add AudioEffectEnvelope 10 年前
effect_envelope.h Add AudioEffectEnvelope 10 年前
effect_fade.cpp Add MIT license 10 年前
effect_fade.h Add MIT license 10 年前
effect_flange.cpp Change Flange effect to one channel 10 年前
effect_flange.h remove unimplemented stop() 10 年前
effect_multiply.cpp Add AudioEffectMultiply 10 年前
effect_multiply.h Add AudioEffectMultiply 10 年前
filter_biquad.cpp Improve Biquad filter 10 年前
filter_biquad.h Improve Biquad filter 10 年前
filter_fir.cpp Impove and document FIR filter 10 年前
filter_fir.h Impove and document FIR filter 10 年前
filter_fir.md Change FIR filter (as suggested by rheslip) to filter one channel instead of two. Updated example, added documenting file 10 年前
filter_variable.cpp Add credits/references for numerical approximation algorithms 10 年前
filter_variable.h Finish AudioFilterStateVariable (signal control of corner frequency) 10 年前
input_adc.cpp Fix some Teensy-LC compiler errors 9 年前
input_adc.h Fix AudioInputAnalog 10 年前
input_i2s.cpp Avoid allocating unneeded DMA channels 10 年前
input_i2s.h Use DMAChannel begin() 10 年前
keywords.txt Begin work on AudioEffectDelayExternal... 9 年前
library.json Fix JSON syntax 10 年前
library.properties Add library.properties 9 年前
mixer.cpp Fix some Teensy-LC compiler errors 9 年前
mixer.h Fix some Teensy-LC compiler errors 9 年前
multiplier.md Add a multiplier (by rheslip) 10 年前
new_objects.md change format for new_objects files 11 年前
output_dac.cpp Avoid allocating unneeded DMA channels 10 年前
output_dac.h Use DMAChannel begin() 10 年前
output_i2s.cpp Fix some Teensy-LC compiler errors 9 年前
output_i2s.h Use DMAChannel begin() 10 年前
output_pwm.cpp Avoid allocating unneeded DMA channels 10 年前
output_pwm.h Make input ADC and output DAC play nicely together 10 年前
output_spdif.cpp added muting to zero blocks 9 年前
output_spdif.h added mute_PCM() - sets or unsets VALID in VUCP (and adjusts PARITY) 9 年前
play_memory.cpp Add status and position functions to AudioPlayMemory 10 年前
play_memory.h Add status and position functions to AudioPlayMemory 10 年前
play_queue.cpp do not forget - your own addition :-) 10 年前
play_queue.h do not forget - your own addition :-) 10 年前
play_sd_raw.cpp Do not disable all interrupts while opening RAW files 9 年前
play_sd_raw.h Fix status functions in AudioPlaySdRaw 10 年前
play_sd_wav.cpp Fix stereo WAV file startup & end (first and last 3 milliseconds) 9 年前
play_sd_wav.h Fix audible click at end of Wav file playing 10 年前
play_serialflash_raw.cpp Add AudioPlaySerialflashRaw 9 年前
play_serialflash_raw.h Add AudioPlaySerialflashRaw 9 年前
record_queue.cpp Fix harmless compiler warnings in AudioRecordQueue 10 年前
record_queue.h Finish AudioRecordQueue and Record example 10 年前
spi_interrupt.cpp Add SPI interrupt registration layer 10 年前
spi_interrupt.h register SPI interrupt when playing WAV & RAW files 10 年前
synth_dc.cpp Add AudioSynthWaveformDc 10 年前
synth_dc.h simplify overflow checks somewhat 10 年前
synth_pinknoise.cpp Clean up harmless compiler warnings 10 年前
synth_pinknoise.h Add AudioSynthNoisePink 10 年前
synth_sine.cpp Add MemoryAndCpuUsage example 10 年前
synth_sine.h Add phase() to waveform objects 10 年前
synth_tonesweep.cpp Fix up synth_tonesweep and the example to conform (more closely) to the naming conventions 10 年前
synth_tonesweep.h Clean up harmless compiler warnings 10 年前
synth_waveform.cpp Add simple pulse waveform 10 年前
synth_waveform.h Clean up harmless compiler warnings 10 年前
synth_waveform.md Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave. 10 年前
synth_whitenoise.cpp Fix multiple white noise instances 10 年前
synth_whitenoise.h Fix multiple white noise instances 10 年前

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