PaulStoffregen 8f0829c845 Ladder filter frequency modulation in "volts per octave"		pirms 3 gadiem
docs	Add issue template	pirms 6 gadiem
examples	Ladder filter frequency modulation in "volts per octave"	pirms 3 gadiem
extras	Add PROGMEM to output array	pirms 3 gadiem
gui	Merge pull request #378 from FrankBoesing/fix-doc	pirms 3 gadiem
utility	Fixes for Teensy LC	pirms 3 gadiem
.gitignore	Add documentation for new objects	pirms 8 gadiem
.travis.yml	Update Travis CI settings	pirms 8 gadiem
Audio.h	Add ladder filter, work-in-progress	pirms 3 gadiem
AudioControl.h	Add AudioSynthWaveformSine	pirms 10 gadiem
Quantizer.cpp	prevent clipping	pirms 4 gadiem
Quantizer.h	async spdif input added	pirms 4 gadiem
README.md	Mention Teensy 4.x in readme	pirms 3 gadiem
Resampler.cpp	added the maximum filter length to the parameters	pirms 4 gadiem
Resampler.h	added the maximum filter length to the parameters	pirms 4 gadiem
analyze_fft256.cpp	Fixes for Teensy LC	pirms 3 gadiem
analyze_fft256.h	Fix problem with optimized loops like do {} while (!myFFT.available());	pirms 7 gadiem
analyze_fft1024.cpp	Import all of Frank's T4 edits	pirms 5 gadiem
analyze_fft1024.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
analyze_notefreq.cpp	Include Arduino.h first in all cpp files, for precompiled header speedup	pirms 6 gadiem
analyze_notefreq.h	NoteFrequency fixes	pirms 8 gadiem
analyze_peak.cpp	Include Arduino.h first in all cpp files, for precompiled header speedup	pirms 6 gadiem
analyze_peak.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
analyze_print.cpp	Include Arduino.h first in all cpp files, for precompiled header speedup	pirms 6 gadiem
analyze_print.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
analyze_rms.cpp	Import all of Frank's T4 edits	pirms 5 gadiem
analyze_rms.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
analyze_tonedetect.cpp	Import all of Frank's T4 edits	pirms 5 gadiem
analyze_tonedetect.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
async_input_spdif3.cpp	FLASHMEM instead of PROGMEM for functions	pirms 4 gadiem
async_input_spdif3.h	prevent clipping	pirms 4 gadiem
biquad.h	async spdif input added	pirms 4 gadiem
control_ak4558.cpp	Include Arduino.h first in all cpp files, for precompiled header speedup	pirms 6 gadiem
control_ak4558.h	Fixed control functions, examples, GUI elements	pirms 9 gadiem
control_cs4272.cpp	Include Arduino.h first in all cpp files, for precompiled header speedup	pirms 6 gadiem
control_cs4272.h	Add CS4272 control (thanks William Hollender)	pirms 8 gadiem
control_cs42448.cpp	Add comment about strange CS42448 issue and undocumented bit	pirms 5 gadiem
control_cs42448.h	Add AudioControlCS42448	pirms 7 gadiem
control_sgtl5000.cpp	Merge pull request #373 from grahamwhaley/20201229_5k_hishelf	pirms 3 gadiem
control_sgtl5000.h	Merge pull request #334 from jurgenbelien/master	pirms 3 gadiem
control_tlv320aic3206.cpp	AIC3206: rename channel macros, add comments	pirms 6 gadiem
control_tlv320aic3206.h	AIC3206: rename channel macros, add comments	pirms 6 gadiem
control_wm8731.cpp	WM8731 has flaky I2C communication workaround	pirms 5 gadiem
control_wm8731.h	Add WM8731 inputSelect() function and update example	pirms 6 gadiem
data_bandlimit_step.c	Band limited versions of square and sawtooth added to AudioSynthWaveform and AudioSynthWaveformModulated	pirms 4 gadiem
data_spdif.c	use common spdif bcmlookup table	pirms 5 gadiem
data_ulaw.c	Add missing open source license headers	pirms 10 gadiem
data_waveforms.c	Remove old AudioSynthWaveform	pirms 10 gadiem
data_windows.c	Add other window types for 1024 point FFT	pirms 10 gadiem
effect_bitcrusher.cpp	Include Arduino.h first in all cpp files, for precompiled header speedup	pirms 6 gadiem
effect_bitcrusher.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
effect_chorus.cpp	Include Arduino.h first in all cpp files, for precompiled header speedup	pirms 6 gadiem
effect_chorus.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
effect_combine.cpp	Add AudioEffectDigitalCombine (from Bleep Labs)	pirms 6 gadiem
effect_combine.h	Move combine effect constants to class enum, not global scope	pirms 6 gadiem
effect_delay.cpp	Include Arduino.h first in all cpp files, for precompiled header speedup	pirms 6 gadiem
effect_delay.h	Allow longer max delay effect on Teensy 4.0	pirms 5 gadiem
effect_delay_ext.cpp	Include Arduino.h first in all cpp files, for precompiled header speedup	pirms 6 gadiem
effect_delay_ext.h	Add F-RAM	pirms 7 gadiem
effect_envelope.cpp	Add isActive() and isSustain() to envelope	pirms 6 gadiem
effect_envelope.h	Add isActive() and isSustain() to envelope	pirms 6 gadiem
effect_fade.cpp	Include Arduino.h first in all cpp files, for precompiled header speedup	pirms 6 gadiem
effect_fade.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
effect_flange.cpp	Include Arduino.h first in all cpp files, for precompiled header speedup	pirms 6 gadiem
effect_flange.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
effect_freeverb.cpp	Round down to 0 to avoid the buzzing noise issue reported here:	pirms 4 gadiem
effect_freeverb.h	Add AudioEffectFreeverbStereo	pirms 6 gadiem
effect_granular.cpp	Increase granular speed range, change public function to setSpeed()	pirms 6 gadiem
effect_granular.h	Increase granular speed range, change public function to setSpeed()	pirms 6 gadiem
effect_midside.cpp	Import all of Frank's T4 edits	pirms 5 gadiem
effect_midside.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
effect_multiply.cpp	Import all of Frank's T4 edits	pirms 5 gadiem
effect_multiply.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
effect_rectifier.cpp	Update effect_rectifier.cpp	pirms 4 gadiem
effect_rectifier.h	update keywords	pirms 4 gadiem
effect_reverb.cpp	memset: wrong size - element size is not 1	pirms 6 gadiem
effect_reverb.h	Add reverb effect, from Joao Rossi Filho	pirms 8 gadiem
effect_waveshaper.cpp	Include Arduino.h first in all cpp files, for precompiled header speedup	pirms 6 gadiem
effect_waveshaper.h	Accept floats instead of int16_ts for waveshape in shape()	pirms 7 gadiem
filter_biquad.cpp	Add comment about noise shaping in biquad filter	pirms 5 gadiem
filter_biquad.h	Add shelving filter support for biquad	pirms 8 gadiem
filter_fir.cpp	Include Arduino.h first in all cpp files, for precompiled header speedup	pirms 6 gadiem
filter_fir.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
filter_fir.md	Change FIR filter (as suggested by rheslip) to filter one channel instead of two. Updated example, added documenting file	pirms 10 gadiem
filter_ladder.cpp	Ladder filter frequency modulation in "volts per octave"	pirms 3 gadiem
filter_ladder.h	Ladder filter frequency modulation in "volts per octave"	pirms 3 gadiem
filter_variable.cpp	Update links in comments, to Laurent de Soras's exp2 approximation info	pirms 5 gadiem
filter_variable.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
input_adc.cpp	Fix ADC input on Teensy 3.x	pirms 4 gadiem
input_adc.h	Initial support for ADC input on Teensy 4.0	pirms 4 gadiem
input_adcs.cpp	align	pirms 4 gadiem
input_adcs.h	Fix indentation and move filtercoefficient to #define constant instead of int32_t variable	pirms 7 gadiem
input_i2s.cpp	Add I2sInput Master	pirms 3 gadiem
input_i2s.h	LC input slave	pirms 3 gadiem
input_i2s2.cpp	Update input_i2s2.cpp	pirms 4 gadiem
input_i2s2.h	various (see below)	pirms 5 gadiem
input_i2s_hex.cpp	add DMAMEM, fix warnings	pirms 4 gadiem
input_i2s_hex.h	6 channel I2S input for Teensy 4.0	pirms 4 gadiem
input_i2s_oct.cpp	8 channel I2S input for Teensy 4.0	pirms 4 gadiem
input_i2s_oct.h	8 channel I2S input for Teensy 4.0	pirms 4 gadiem
input_i2s_quad.cpp	add DMAMEM, fix warnings	pirms 4 gadiem
input_i2s_quad.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
input_pdm.cpp	Kinetis K only	pirms 3 gadiem
input_pdm.h	Add AudioInputPDM	pirms 6 gadiem
input_spdif3.cpp	spdif-input	pirms 4 gadiem
input_spdif3.h	spdif-input	pirms 4 gadiem
input_tdm.cpp	Fix TDM input on Teensy 4.0	pirms 5 gadiem
input_tdm.h	Add AudioInputTDM	pirms 7 gadiem
input_tdm2.cpp	Fix TDM2 on Teensy 4.0	pirms 5 gadiem
input_tdm2.h	T4: Input TDM, Input TDM2	pirms 5 gadiem
keywords.txt	Change Ladder filter API to be similar to other filters	pirms 3 gadiem
library.json	Let PlatformIO automatically detect Arduino v1.0 library format	pirms 8 gadiem
library.properties	Edit version string, for Arduino 1.6.11 compatibility	pirms 8 gadiem
memcpy_audio.S	Import all of Frank's T4 edits	pirms 5 gadiem
memcpy_audio.h	Add memcpy_tointerleaveQuad (thanks Frank)	pirms 8 gadiem
mixer.cpp	Import all of Frank's T4 edits	pirms 5 gadiem
mixer.h	Import all of Frank's T4 edits	pirms 5 gadiem
multiplier.md	Add a multiplier (by rheslip)	pirms 10 gadiem
new_objects.md	change format for new_objects files	pirms 11 gadiem
output_adat.cpp	Update output_adat.cpp	pirms 4 gadiem
output_adat.h	Add ADAT 8 channel TOSLINK output by Ernstjan Freriks	pirms 7 gadiem
output_dac.cpp	Remove leftover debug printing	pirms 4 gadiem
output_dac.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
output_dacs.cpp	alignment	pirms 4 gadiem
output_dacs.h	Add AudioOutputAnalogStereo	pirms 8 gadiem
output_i2s.cpp	LC input slave	pirms 3 gadiem
output_i2s.h	Teensy LC AudioOutputI2S(+slave)	pirms 3 gadiem
output_i2s2.cpp	Fix simultaneous input & output on I2S2	pirms 4 gadiem
output_i2s2.h	various (see below)	pirms 5 gadiem
output_i2s_hex.cpp	6 channel I2S output for Teensy 4.0	pirms 4 gadiem
output_i2s_hex.h	6 channel I2S output for Teensy 4.0	pirms 4 gadiem
output_i2s_oct.cpp	8 channel I2S output for Teensy 4.0	pirms 4 gadiem
output_i2s_oct.h	8 channel I2S output for Teensy 4.0	pirms 4 gadiem
output_i2s_quad.cpp	Add comment with link to forum conversation	pirms 4 gadiem
output_i2s_quad.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
output_mqs.cpp	MQS: Play nice	pirms 3 gadiem
output_mqs.h	add output_mqs	pirms 5 gadiem
output_pt8211.cpp	LC has no I2S0_TCR1	pirms 3 gadiem
output_pt8211.h	Add Teensy LC Code for PT8211	pirms 3 gadiem
output_pt8211_2.cpp	done :)	pirms 3 gadiem
output_pt8211_2.h	add output_pt8211_2	pirms 5 gadiem
output_pwm.cpp	Disable not-yet-working PWM output for Teensy 4.x	pirms 4 gadiem
output_pwm.h	Add Teensy 4 PWM output	pirms 4 gadiem
output_spdif.cpp	Fix compile errors on Teensy LC	pirms 4 gadiem
output_spdif.h	SPDIF	pirms 5 gadiem
output_spdif2.cpp	PROGMEM->FLASHMEM	pirms 4 gadiem
output_spdif2.h	SPDIF	pirms 5 gadiem
output_spdif3.cpp	spdif-input	pirms 4 gadiem
output_spdif3.h	async spdif input -> friendclass of spdif output	pirms 4 gadiem
output_tdm.cpp	Fix compile errors on Teensy LC	pirms 4 gadiem
output_tdm.h	Add AudioInputTDM	pirms 7 gadiem
output_tdm2.cpp	Fix TDM2 on Teensy 4.0	pirms 5 gadiem
output_tdm2.h	various (see below)	pirms 5 gadiem
play_memory.cpp	Include Arduino.h first in all cpp files, for precompiled header speedup	pirms 6 gadiem
play_memory.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
play_queue.cpp	Allow larger queues on Teensy 3.5, 3.6, 4.0	pirms 4 gadiem
play_queue.h	Allow larger queues on Teensy 3.5, 3.6, 4.0	pirms 4 gadiem
play_sd_raw.cpp	Include Arduino.h first in all cpp files, for precompiled header speedup	pirms 6 gadiem
play_sd_raw.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
play_sd_wav.cpp	allowing position + length to work during pause	pirms 4 gadiem
play_sd_wav.h	sdwav play/pause initial commit	pirms 4 gadiem
play_serialflash_raw.cpp	Include Arduino.h first in all cpp files, for precompiled header speedup	pirms 6 gadiem
play_serialflash_raw.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
record_queue.cpp	Allow larger queues on Teensy 3.5, 3.6, 4.0	pirms 4 gadiem
record_queue.h	Allow larger queues on Teensy 3.5, 3.6, 4.0	pirms 4 gadiem
spi_interrupt.cpp	Include Arduino.h first in all cpp files, for precompiled header speedup	pirms 6 gadiem
spi_interrupt.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
synth_dc.cpp	Include Arduino.h first in all cpp files, for precompiled header speedup	pirms 6 gadiem
synth_dc.h	Import all of Frank's T4 edits	pirms 5 gadiem
synth_karplusstrong.cpp	Fix compile errors on Teensy LC	pirms 4 gadiem
synth_karplusstrong.h	Add Synthesis Guitar example	pirms 8 gadiem
synth_pinknoise.cpp	Include Arduino.h first in all cpp files, for precompiled header speedup	pirms 6 gadiem
synth_pinknoise.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
synth_pwm.cpp	Import all of Frank's T4 edits	pirms 5 gadiem
synth_pwm.h	Add AudioSynthWaveformPWM	pirms 7 gadiem
synth_simple_drum.cpp	Fix compile errors on Teensy LC	pirms 4 gadiem
synth_simple_drum.h	Adding SimpleDrum synthesis object to audio library.	pirms 8 gadiem
synth_sine.cpp	Import all of Frank's T4 edits	pirms 5 gadiem
synth_sine.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem
synth_tonesweep.cpp	Fix discontinuity in frequency stepping in tonesweep, remove unnecessary/incorrect masking of phase	pirms 4 gadiem
synth_tonesweep.h	ToneSweep improvements (thanks Pio)	pirms 7 gadiem
synth_waveform.cpp	Merge pull request #362 from MarkTillotson/fix_phase_modulation	pirms 3 gadiem
synth_waveform.h	Improve handling of pulse waveforms to allow sub-sample width pulses and finesse remaining issues with modulation	pirms 4 gadiem
synth_waveform.md	Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave.	pirms 10 gadiem
synth_wavetable.cpp	Fix compile errors on Teensy LC	pirms 4 gadiem
synth_wavetable.h	Avoid global Wavetable defines	pirms 6 gadiem
synth_whitenoise.cpp	Import all of Frank's T4 edits	pirms 5 gadiem
synth_whitenoise.h	Do not assume AudioStream.h includes Arduino.h	pirms 8 gadiem

README.md

Teensy Audio Library

16 bit, 44.1 kHz streaming audio library for Teensy 3.x and Teensy 4.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/index.html