Dean Blackketter c53268213d Merge in changes from LenShustek/miditones with latest updates, including building correctly on Mac		8 vuotta sitten
examples	Move miditones to "extras"-folder to prevent compiling	8 vuotta sitten
extras	Merge in changes from LenShustek/miditones with latest updates, including building correctly on Mac	8 vuotta sitten
gui	Fix AudioEffectFlange documentation	8 vuotta sitten
utility	rewrite AudioAnalyzeRMS - arm math version doesn't work!	9 vuotta sitten
.travis.yml	Update Travis CI settings	8 vuotta sitten
Audio.h	Add CS4272 control (thanks William Hollender)	8 vuotta sitten
AudioControl.h	Add AudioSynthWaveformSine	10 vuotta sitten
README.md	remove Travis CI status from readme (it's too unreliable)	8 vuotta sitten
analyze_fft256.cpp	Initial work on FFT256 for Teensy-LC (untested)	9 vuotta sitten
analyze_fft256.h	Fix FFT read range (now inclusive)	9 vuotta sitten
analyze_fft1024.cpp	Fix some Teensy-LC compiler errors	9 vuotta sitten
analyze_fft1024.h	Fix FFT read range (now inclusive)	9 vuotta sitten
analyze_notefreq.cpp	Rename AudioAnalyzeGuitarTuner to AudioAnalyzeNoteFrequency	9 vuotta sitten
analyze_notefreq.h	Rename AudioAnalyzeGuitarTuner to AudioAnalyzeNoteFrequency	9 vuotta sitten
analyze_peak.cpp	Add TODO for analyze peak optimization	8 vuotta sitten
analyze_peak.h	Add readPeakToPeak() to AudioAnalyzePeak	9 vuotta sitten
analyze_print.cpp	Change AudioAnalyzePrint name API	10 vuotta sitten
analyze_print.h	Change AudioAnalyzePrint name API	10 vuotta sitten
analyze_rms.cpp	Don't compile M4 code on LC (but LC still not working)	8 vuotta sitten
analyze_rms.h	rewrite AudioAnalyzeRMS - arm math version doesn't work!	9 vuotta sitten
analyze_tonedetect.cpp	Fix more Teensy-LC compiler errors	9 vuotta sitten
analyze_tonedetect.h	Add MIT license	10 vuotta sitten
control_ak4558.cpp	Fixed control functions, examples, GUI elements	9 vuotta sitten
control_ak4558.h	Fixed control functions, examples, GUI elements	9 vuotta sitten
control_cs4272.cpp	Add CS4272 control (thanks William Hollender)	8 vuotta sitten
control_cs4272.h	Add CS4272 control (thanks William Hollender)	8 vuotta sitten
control_sgtl5000.cpp	Add ability to control two SGTL5000 chips	8 vuotta sitten
control_sgtl5000.h	Add ability to control two SGTL5000 chips	8 vuotta sitten
control_wm8731.cpp	AudioControlWM8731::inputLevel(float n)	9 vuotta sitten
control_wm8731.h	AudioControlWM8731::inputLevel(float n)	9 vuotta sitten
data_ulaw.c	Add missing open source license headers	10 vuotta sitten
data_waveforms.c	Remove old AudioSynthWaveform	10 vuotta sitten
data_windows.c	Add other window types for 1024 point FFT	10 vuotta sitten
effect_bitcrusher.cpp	Fix compiler warning	9 vuotta sitten
effect_bitcrusher.h	Add Bitcrusher effect (thanks Pensive)	9 vuotta sitten
effect_chorus.cpp	Remove debug Serial.print...	8 vuotta sitten
effect_chorus.h	remove unimplemented stop()	10 vuotta sitten
effect_delay.cpp	Remove unused multiplier	10 vuotta sitten
effect_delay.h	Add AudioEffectDelay	10 vuotta sitten
effect_delay_ext.cpp	Add support for Frank's 6-chip Memoryboard4 (AUDIO_MEMORY_MEMORYBOARD)	9 vuotta sitten
effect_delay_ext.h	Add support for Frank's 6-chip Memoryboard4 (AUDIO_MEMORY_MEMORYBOARD)	9 vuotta sitten
effect_envelope.cpp	Add AudioEffectEnvelope	10 vuotta sitten
effect_envelope.h	Add AudioEffectEnvelope	10 vuotta sitten
effect_fade.cpp	Add MIT license	10 vuotta sitten
effect_fade.h	Add MIT license	10 vuotta sitten
effect_flange.cpp	Change Flange effect to one channel	10 vuotta sitten
effect_flange.h	remove unimplemented stop()	10 vuotta sitten
effect_midside.cpp	Don't compile M4 code on LC (but LC still not working)	8 vuotta sitten
effect_midside.h	Add AudioEffectMidSide (thanks Hedde Bosman)	9 vuotta sitten
effect_multiply.cpp	Fix more Teensy-LC compiler errors	9 vuotta sitten
effect_multiply.h	Add AudioEffectMultiply	10 vuotta sitten
filter_biquad.cpp	Fix more Teensy-LC compiler errors	9 vuotta sitten
filter_biquad.h	Improve Biquad filter	10 vuotta sitten
filter_fir.cpp	Impove and document FIR filter	10 vuotta sitten
filter_fir.h	Impove and document FIR filter	10 vuotta sitten
filter_fir.md	Change FIR filter (as suggested by rheslip) to filter one channel instead of two. Updated example, added documenting file	10 vuotta sitten
filter_variable.cpp	Fix more Teensy-LC compiler errors	9 vuotta sitten
filter_variable.h	Finish AudioFilterStateVariable (signal control of corner frequency)	10 vuotta sitten
input_adc.cpp	Fix some Teensy-LC compiler errors	9 vuotta sitten
input_adc.h	Fix AudioInputAnalog	10 vuotta sitten
input_i2s.cpp	Fix more Teensy-LC compiler errors	9 vuotta sitten
input_i2s.h	Use DMAChannel begin()	10 vuotta sitten
input_i2s_quad.cpp	Begin work on quad channel audio input	8 vuotta sitten
input_i2s_quad.h	Begin work on quad channel audio input	8 vuotta sitten
keywords.txt	Add CS4272 control (thanks William Hollender)	8 vuotta sitten
library.json	Handle all nested examples	9 vuotta sitten
library.properties	Increase to version 1.03	9 vuotta sitten
memcpy_audio.S	don't save r12	8 vuotta sitten
memcpy_audio.h	Add memcpy_tointerleaveQuad (thanks Frank)	8 vuotta sitten
mixer.cpp	Fix some Teensy-LC compiler errors	9 vuotta sitten
mixer.h	Allow negative/inverting mixer gain	9 vuotta sitten
multiplier.md	Add a multiplier (by rheslip)	10 vuotta sitten
new_objects.md	change format for new_objects files	11 vuotta sitten
output_dac.cpp	Initial work on DAC for Teensy-LC (still incomplete)	9 vuotta sitten
output_dac.h	Initial work on DAC for Teensy-LC (still incomplete)	9 vuotta sitten
output_i2s.cpp	Optimize I2S output memory copy (thanks Frank Bösing)	8 vuotta sitten
output_i2s.h	Use DMAChannel begin()	10 vuotta sitten
output_i2s_quad.cpp	Add memcpy_tointerleaveQuad (thanks Frank)	8 vuotta sitten
output_i2s_quad.h	Begin work on quad channel audio input	8 vuotta sitten
output_pwm.cpp	Fix more Teensy-LC compiler errors	9 vuotta sitten
output_pwm.h	Make input ADC and output DAC play nicely together	10 vuotta sitten
output_spdif.cpp	Fix more Teensy-LC compiler errors	9 vuotta sitten
output_spdif.h	Add keywords	9 vuotta sitten
play_memory.cpp	Add status and position functions to AudioPlayMemory	10 vuotta sitten
play_memory.h	Add status and position functions to AudioPlayMemory	10 vuotta sitten
play_queue.cpp	do not forget - your own addition :-)	10 vuotta sitten
play_queue.h	do not forget - your own addition :-)	10 vuotta sitten
play_sd_raw.cpp	Do not disable all interrupts while opening RAW files	9 vuotta sitten
play_sd_raw.h	Fix status functions in AudioPlaySdRaw	10 vuotta sitten
play_sd_wav.cpp	Fix stereo WAV file startup & end (first and last 3 milliseconds)	9 vuotta sitten
play_sd_wav.h	Fix audible click at end of Wav file playing	10 vuotta sitten
play_serialflash_raw.cpp	remove leftover debug code from AudioPlaySerialflashRaw	9 vuotta sitten
play_serialflash_raw.h	Add AudioPlaySerialflashRaw	9 vuotta sitten
record_queue.cpp	Fix harmless compiler warnings in AudioRecordQueue	10 vuotta sitten
record_queue.h	Finish AudioRecordQueue and Record example	10 vuotta sitten
spi_interrupt.cpp	Add SPI interrupt registration layer	10 vuotta sitten
spi_interrupt.h	register SPI interrupt when playing WAV & RAW files	10 vuotta sitten
synth_dc.cpp	Add AudioSynthWaveformDc	10 vuotta sitten
synth_dc.h	simplify overflow checks somewhat	10 vuotta sitten
synth_pinknoise.cpp	Clean up harmless compiler warnings	10 vuotta sitten
synth_pinknoise.h	Add AudioSynthNoisePink	10 vuotta sitten
synth_sine.cpp	fix incorrect comment	8 vuotta sitten
synth_sine.h	Add AudioSynthWaveformSineHires - High Precision Sine Wave	9 vuotta sitten
synth_tonesweep.cpp	Bug fix so that downward tone sweeps will work.	8 vuotta sitten
synth_tonesweep.h	Clean up harmless compiler warnings	10 vuotta sitten
synth_waveform.cpp	#144: Add the reverse sawtooth and sample-and-hold waveforms.	9 vuotta sitten
synth_waveform.h	#144: Add the reverse sawtooth and sample-and-hold waveforms.	9 vuotta sitten
synth_waveform.md	Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave.	10 vuotta sitten
synth_whitenoise.cpp	Fix more Teensy-LC compiler errors	9 vuotta sitten
synth_whitenoise.h	Fix multiple white noise instances	10 vuotta sitten

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