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PaulStoffregen 7eb79725da Add case sensitive note to AudioPlaySerialflashRaw documentation 9 år sedan
examples Add Bitcrusher effect (thanks Pensive) 9 år sedan
gui Add case sensitive note to AudioPlaySerialflashRaw documentation 9 år sedan
utility Fix some Teensy-LC compiler errors 9 år sedan
Audio.h Begin work on AudioEffectDelayExternal... 9 år sedan
AudioControl.h Add AudioSynthWaveformSine 10 år sedan
README.md Update readme still yet again 10 år sedan
analyze_fft256.cpp Initial work on FFT256 for Teensy-LC (untested) 9 år sedan
analyze_fft256.h Initial work on FFT256 for Teensy-LC (untested) 9 år sedan
analyze_fft1024.cpp Fix some Teensy-LC compiler errors 9 år sedan
analyze_fft1024.h Add proper API to FFT objects 10 år sedan
analyze_peak.cpp Change peak detect API to conform to library conventions 10 år sedan
analyze_peak.h Change peak detect API to conform to library conventions 10 år sedan
analyze_print.cpp Change AudioAnalyzePrint name API 10 år sedan
analyze_print.h Change AudioAnalyzePrint name API 10 år sedan
analyze_tonedetect.cpp Fix more Teensy-LC compiler errors 9 år sedan
analyze_tonedetect.h Add MIT license 10 år sedan
control_sgtl5000.cpp Simplify & document SGTL5000 control 10 år sedan
control_sgtl5000.h Document sgtl5000 10 år sedan
control_wm8731.cpp Update WM8731 example 10 år sedan
control_wm8731.h Update WM8731 example 10 år sedan
data_ulaw.c Add missing open source license headers 10 år sedan
data_waveforms.c Remove old AudioSynthWaveform 10 år sedan
data_windows.c Add other window types for 1024 point FFT 10 år sedan
effect_bitcrusher.cpp Fix compiler warning 9 år sedan
effect_bitcrusher.h Add Bitcrusher effect (thanks Pensive) 9 år sedan
effect_chorus.cpp Change Chrous effect to one channel 10 år sedan
effect_chorus.h remove unimplemented stop() 10 år sedan
effect_delay.cpp Remove unused multiplier 10 år sedan
effect_delay.h Add AudioEffectDelay 10 år sedan
effect_delay_ext.cpp Add support for Frank's 6-chip Memoryboard4 (AUDIO_MEMORY_MEMORYBOARD) 9 år sedan
effect_delay_ext.h Add support for Frank's 6-chip Memoryboard4 (AUDIO_MEMORY_MEMORYBOARD) 9 år sedan
effect_envelope.cpp Add AudioEffectEnvelope 10 år sedan
effect_envelope.h Add AudioEffectEnvelope 10 år sedan
effect_fade.cpp Add MIT license 10 år sedan
effect_fade.h Add MIT license 10 år sedan
effect_flange.cpp Change Flange effect to one channel 10 år sedan
effect_flange.h remove unimplemented stop() 10 år sedan
effect_multiply.cpp Fix more Teensy-LC compiler errors 9 år sedan
effect_multiply.h Add AudioEffectMultiply 10 år sedan
filter_biquad.cpp Fix more Teensy-LC compiler errors 9 år sedan
filter_biquad.h Improve Biquad filter 10 år sedan
filter_fir.cpp Impove and document FIR filter 10 år sedan
filter_fir.h Impove and document FIR filter 10 år sedan
filter_fir.md Change FIR filter (as suggested by rheslip) to filter one channel instead of two. Updated example, added documenting file 10 år sedan
filter_variable.cpp Fix more Teensy-LC compiler errors 9 år sedan
filter_variable.h Finish AudioFilterStateVariable (signal control of corner frequency) 10 år sedan
input_adc.cpp Fix some Teensy-LC compiler errors 9 år sedan
input_adc.h Fix AudioInputAnalog 10 år sedan
input_i2s.cpp Fix more Teensy-LC compiler errors 9 år sedan
input_i2s.h Use DMAChannel begin() 10 år sedan
keywords.txt Add keywords 9 år sedan
library.json Fix JSON syntax 10 år sedan
library.properties Add library.properties 9 år sedan
mixer.cpp Fix some Teensy-LC compiler errors 9 år sedan
mixer.h Fix some Teensy-LC compiler errors 9 år sedan
multiplier.md Add a multiplier (by rheslip) 10 år sedan
new_objects.md change format for new_objects files 10 år sedan
output_dac.cpp Initial work on DAC for Teensy-LC (still incomplete) 9 år sedan
output_dac.h Initial work on DAC for Teensy-LC (still incomplete) 9 år sedan
output_i2s.cpp Fix some Teensy-LC compiler errors 9 år sedan
output_i2s.h Use DMAChannel begin() 10 år sedan
output_pwm.cpp Fix more Teensy-LC compiler errors 9 år sedan
output_pwm.h Make input ADC and output DAC play nicely together 10 år sedan
output_spdif.cpp Fix more Teensy-LC compiler errors 9 år sedan
output_spdif.h Add keywords 9 år sedan
play_memory.cpp Add status and position functions to AudioPlayMemory 10 år sedan
play_memory.h Add status and position functions to AudioPlayMemory 10 år sedan
play_queue.cpp do not forget - your own addition :-) 10 år sedan
play_queue.h do not forget - your own addition :-) 10 år sedan
play_sd_raw.cpp Do not disable all interrupts while opening RAW files 9 år sedan
play_sd_raw.h Fix status functions in AudioPlaySdRaw 10 år sedan
play_sd_wav.cpp Fix stereo WAV file startup & end (first and last 3 milliseconds) 9 år sedan
play_sd_wav.h Fix audible click at end of Wav file playing 10 år sedan
play_serialflash_raw.cpp remove leftover debug code from AudioPlaySerialflashRaw 9 år sedan
play_serialflash_raw.h Add AudioPlaySerialflashRaw 9 år sedan
record_queue.cpp Fix harmless compiler warnings in AudioRecordQueue 10 år sedan
record_queue.h Finish AudioRecordQueue and Record example 10 år sedan
spi_interrupt.cpp Add SPI interrupt registration layer 10 år sedan
spi_interrupt.h register SPI interrupt when playing WAV & RAW files 10 år sedan
synth_dc.cpp Add AudioSynthWaveformDc 10 år sedan
synth_dc.h simplify overflow checks somewhat 10 år sedan
synth_pinknoise.cpp Clean up harmless compiler warnings 10 år sedan
synth_pinknoise.h Add AudioSynthNoisePink 10 år sedan
synth_sine.cpp Fix more Teensy-LC compiler errors 9 år sedan
synth_sine.h Add phase() to waveform objects 10 år sedan
synth_tonesweep.cpp Fix up synth_tonesweep and the example to conform (more closely) to the naming conventions 10 år sedan
synth_tonesweep.h Clean up harmless compiler warnings 10 år sedan
synth_waveform.cpp Add simple pulse waveform 10 år sedan
synth_waveform.h Clean up harmless compiler warnings 10 år sedan
synth_waveform.md Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave. 10 år sedan
synth_whitenoise.cpp Fix more Teensy-LC compiler errors 9 år sedan
synth_whitenoise.h Fix multiple white noise instances 10 år sedan

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