Ivan Kravets 4881034ea3 Use tagged source code from repo		8 jaren geleden
examples	Add link to FFT log band scaling conversation & scripts	8 jaren geleden
extras	Len noticed a bug in binary velocity output	8 jaren geleden
gui	Fix AudioEffectFlange documentation	8 jaren geleden
utility	rewrite AudioAnalyzeRMS - arm math version doesn't work!	9 jaren geleden
.travis.yml	Update Travis CI settings	8 jaren geleden
Audio.h	Add CS4272 control (thanks William Hollender)	8 jaren geleden
AudioControl.h	Add AudioSynthWaveformSine	10 jaren geleden
README.md	remove Travis CI status from readme (it's too unreliable)	8 jaren geleden
analyze_fft256.cpp	Initial work on FFT256 for Teensy-LC (untested)	9 jaren geleden
analyze_fft256.h	Fix FFT read range (now inclusive)	9 jaren geleden
analyze_fft1024.cpp	Fix some Teensy-LC compiler errors	9 jaren geleden
analyze_fft1024.h	Fix FFT read range (now inclusive)	9 jaren geleden
analyze_notefreq.cpp	Rename AudioAnalyzeGuitarTuner to AudioAnalyzeNoteFrequency	9 jaren geleden
analyze_notefreq.h	Rename AudioAnalyzeGuitarTuner to AudioAnalyzeNoteFrequency	9 jaren geleden
analyze_peak.cpp	Add TODO for analyze peak optimization	8 jaren geleden
analyze_peak.h	Add readPeakToPeak() to AudioAnalyzePeak	9 jaren geleden
analyze_print.cpp	Change AudioAnalyzePrint name API	10 jaren geleden
analyze_print.h	Change AudioAnalyzePrint name API	10 jaren geleden
analyze_rms.cpp	Don't compile M4 code on LC (but LC still not working)	8 jaren geleden
analyze_rms.h	rewrite AudioAnalyzeRMS - arm math version doesn't work!	9 jaren geleden
analyze_tonedetect.cpp	Fix more Teensy-LC compiler errors	9 jaren geleden
analyze_tonedetect.h	Add MIT license	10 jaren geleden
control_ak4558.cpp	Fixed control functions, examples, GUI elements	9 jaren geleden
control_ak4558.h	Fixed control functions, examples, GUI elements	9 jaren geleden
control_cs4272.cpp	Add CS4272 control (thanks William Hollender)	8 jaren geleden
control_cs4272.h	Add CS4272 control (thanks William Hollender)	8 jaren geleden
control_sgtl5000.cpp	Add ability to control two SGTL5000 chips	8 jaren geleden
control_sgtl5000.h	Add ability to control two SGTL5000 chips	8 jaren geleden
control_wm8731.cpp	AudioControlWM8731::inputLevel(float n)	9 jaren geleden
control_wm8731.h	AudioControlWM8731::inputLevel(float n)	9 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	Fix compiler warning	9 jaren geleden
effect_bitcrusher.h	Add Bitcrusher effect (thanks Pensive)	9 jaren geleden
effect_chorus.cpp	Remove debug Serial.print...	8 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_midside.cpp	Don't compile M4 code on LC (but LC still not working)	8 jaren geleden
effect_midside.h	Add AudioEffectMidSide (thanks Hedde Bosman)	9 jaren geleden
effect_multiply.cpp	Fix more Teensy-LC compiler errors	9 jaren geleden
effect_multiply.h	Add AudioEffectMultiply	10 jaren geleden
filter_biquad.cpp	Fix more Teensy-LC compiler errors	9 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	Fix more Teensy-LC compiler errors	9 jaren geleden
filter_variable.h	Finish AudioFilterStateVariable (signal control of corner frequency)	10 jaren geleden
input_adc.cpp	Fix some Teensy-LC compiler errors	9 jaren geleden
input_adc.h	Fix AudioInputAnalog	10 jaren geleden
input_i2s.cpp	Fix more Teensy-LC compiler errors	9 jaren geleden
input_i2s.h	Use DMAChannel begin()	10 jaren geleden
input_i2s_quad.cpp	More hardware defs	8 jaren geleden
input_i2s_quad.h	Begin work on quad channel audio input	8 jaren geleden
keywords.txt	Add CS4272 control (thanks William Hollender)	8 jaren geleden
library.json	Use tagged source code from repo	8 jaren geleden
library.properties	Increase to version 1.03	9 jaren geleden
memcpy_audio.S	More hardware defs	8 jaren geleden
memcpy_audio.h	Add memcpy_tointerleaveQuad (thanks Frank)	8 jaren geleden
mixer.cpp	Fix some Teensy-LC compiler errors	9 jaren geleden
mixer.h	Allow negative/inverting mixer gain	9 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	More hardware defs	8 jaren geleden
output_dac.h	Initial work on DAC for Teensy-LC (still incomplete)	9 jaren geleden
output_i2s.cpp	More hardware defs	8 jaren geleden
output_i2s.h	Use DMAChannel begin()	10 jaren geleden
output_i2s_quad.cpp	More hardware defs	8 jaren geleden
output_i2s_quad.h	Begin work on quad channel audio input	8 jaren geleden
output_pwm.cpp	Fix more Teensy-LC compiler errors	9 jaren geleden
output_pwm.h	Make input ADC and output DAC play nicely together	10 jaren geleden
output_spdif.cpp	More hardware defs	8 jaren geleden
output_spdif.h	Add keywords	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	remove leftover debug code from 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	fix incorrect comment	8 jaren geleden
synth_sine.h	Add AudioSynthWaveformSineHires - High Precision Sine Wave	9 jaren geleden
synth_tonesweep.cpp	Bug fix so that downward tone sweeps will work.	8 jaren geleden
synth_tonesweep.h	Clean up harmless compiler warnings	10 jaren geleden
synth_waveform.cpp	#144: Add the reverse sawtooth and sample-and-hold waveforms.	9 jaren geleden
synth_waveform.h	#144: Add the reverse sawtooth and sample-and-hold waveforms.	9 jaren geleden
synth_waveform.md	Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave.	10 jaren geleden
synth_whitenoise.cpp	Fix more Teensy-LC compiler errors	9 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.

Teensy 3.1 12 bit DAC

Teensy 3.1 or 3.0 ADC Input

Teensy 3.1 or 3.0 PWM Output