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PaulStoffregen 2efd4f9966 Update readme again пре 11 година
examples Update SpectrumAnalyzerBasic example пре 11 година
gui GUI: reenable input ports when other objects driving them are deleted пре 11 година
utility Make input ADC and output DAC play nicely together пре 11 година
Audio.h Add AudioRecordQueue (work in progress) пре 11 година
AudioControl.h Add AudioSynthWaveformSine пре 11 година
README.md Update readme again пре 11 година
analyze_fft256.cpp Add proper API to FFT objects пре 11 година
analyze_fft256.h Simplify & document SGTL5000 control пре 11 година
analyze_fft1024.cpp Add proper API to FFT objects пре 11 година
analyze_fft1024.h Add proper API to FFT objects пре 11 година
analyze_peak.cpp Change peak detect API to conform to library conventions пре 11 година
analyze_peak.h Change peak detect API to conform to library conventions пре 11 година
analyze_print.cpp Change AudioAnalyzePrint name API пре 11 година
analyze_print.h Change AudioAnalyzePrint name API пре 11 година
analyze_tonedetect.cpp mode documentation in the GUI пре 11 година
analyze_tonedetect.h Add MIT license пре 11 година
control_sgtl5000.cpp Simplify & document SGTL5000 control пре 11 година
control_sgtl5000.h Update SGTL5000 keywords пре 11 година
control_wm8731.cpp Update WM8731 example пре 11 година
control_wm8731.h Update WM8731 example пре 11 година
data_ulaw.c Add missing open source license headers пре 11 година
data_waveforms.c Remove old AudioSynthWaveform пре 11 година
data_windows.c Add other window types for 1024 point FFT пре 11 година
effect_chorus.cpp Change Chrous effect to one channel пре 11 година
effect_chorus.h remove unimplemented stop() пре 11 година
effect_delay.cpp Remove unused multiplier пре 11 година
effect_delay.h Add AudioEffectDelay пре 11 година
effect_envelope.cpp Add AudioEffectEnvelope пре 11 година
effect_envelope.h Add AudioEffectEnvelope пре 11 година
effect_fade.cpp Add MIT license пре 11 година
effect_fade.h Add MIT license пре 11 година
effect_flange.cpp Change Flange effect to one channel пре 11 година
effect_flange.h remove unimplemented stop() пре 11 година
effect_multiply.cpp Add AudioEffectMultiply пре 11 година
effect_multiply.h Add AudioEffectMultiply пре 11 година
filter_biquad.cpp Improve Biquad filter пре 11 година
filter_biquad.h Improve Biquad filter пре 11 година
filter_fir.cpp Impove and document FIR filter пре 11 година
filter_fir.h Impove and document FIR filter пре 11 година
filter_fir.md Change FIR filter (as suggested by rheslip) to filter one channel instead of two. Updated example, added documenting file пре 11 година
filter_variable.cpp Add credits/references for numerical approximation algorithms пре 11 година
filter_variable.h Finish AudioFilterStateVariable (signal control of corner frequency) пре 11 година
input_adc.cpp Improve AudioInputAnalog DC blocking filter пре 11 година
input_adc.h Make input ADC and output DAC play nicely together пре 11 година
input_i2s.cpp Avoid allocating unneeded DMA channels пре 11 година
input_i2s.h Use DMAChannel begin() пре 11 година
keywords.txt Improve Biquad filter пре 11 година
mixer.cpp Add MIT license пре 11 година
mixer.h Add MIT license пре 11 година
multiplier.md Add a multiplier (by rheslip) пре 11 година
new_objects.md change format for new_objects files пре 12 година
output_dac.cpp Avoid allocating unneeded DMA channels пре 11 година
output_dac.h Use DMAChannel begin() пре 11 година
output_i2s.cpp Avoid allocating unneeded DMA channels пре 11 година
output_i2s.h Use DMAChannel begin() пре 11 година
output_pwm.cpp Avoid allocating unneeded DMA channels пре 11 година
output_pwm.h Make input ADC and output DAC play nicely together пре 11 година
play_memory.cpp Add status and position functions to AudioPlayMemory пре 11 година
play_memory.h Add status and position functions to AudioPlayMemory пре 11 година
play_queue.cpp Add AudioPlayQueue пре 11 година
play_queue.h Add AudioPlayQueue пре 11 година
play_sd_raw.cpp Disable interrupts while opening files from SD card пре 11 година
play_sd_raw.h Fix status functions in AudioPlaySdRaw пре 11 година
play_sd_wav.cpp Fix audible click at end of Wav file playing пре 11 година
play_sd_wav.h Fix audible click at end of Wav file playing пре 11 година
record_queue.cpp Finish AudioRecordQueue and Record example пре 11 година
record_queue.h Finish AudioRecordQueue and Record example пре 11 година
synth_dc.cpp Add AudioSynthWaveformDc пре 11 година
synth_dc.h simplify overflow checks somewhat пре 11 година
synth_pinknoise.cpp Clean up harmless compiler warnings пре 11 година
synth_pinknoise.h Add AudioSynthNoisePink пре 11 година
synth_sine.cpp Add MemoryAndCpuUsage example пре 11 година
synth_sine.h Add phase() to waveform objects пре 11 година
synth_tonesweep.cpp Fix up synth_tonesweep and the example to conform (more closely) to the naming conventions пре 11 година
synth_tonesweep.h Clean up harmless compiler warnings пре 11 година
synth_waveform.cpp Add simple pulse waveform пре 11 година
synth_waveform.h Clean up harmless compiler warnings пре 11 година
synth_waveform.md Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave. пре 11 година
synth_whitenoise.cpp Fix multiple white noise instances пре 11 година
synth_whitenoise.h Fix multiple white noise instances пре 11 година

README.md

Teensy Audio Library

16 bit, 44.1 kHz streaming audio library for Teensy 3.x, featuring audio playing, synthesis, analysis, effects & filtering, mixing, etc.

Main Audio Library Page:

http://www.pjrc.com/teensy/td_libs_Audio.html

Audio System Design Tool:

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