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PaulStoffregen 238ec19741 Add SGTL5000 dacVolumeRamp functions & example пре 9 година
examples Add SGTL5000 dacVolumeRamp functions & example пре 9 година
extras/wav2sketch Rename AudioAnalyzeGuitarTuner to AudioAnalyzeNoteFrequency пре 9 година
gui Add AudioAnalyzeRMS (thanks sgorpi) пре 9 година
utility rewrite AudioAnalyzeRMS - arm math version doesn't work! пре 9 година
.travis.yml Skip unused source files пре 9 година
Audio.h Add AudioAnalyzeRMS (thanks sgorpi) пре 9 година
AudioControl.h Add AudioSynthWaveformSine пре 10 година
README.md Add CI build status пре 9 година
analyze_fft256.cpp Initial work on FFT256 for Teensy-LC (untested) пре 9 година
analyze_fft256.h Fix FFT read range (now inclusive) пре 9 година
analyze_fft1024.cpp Fix some Teensy-LC compiler errors пре 9 година
analyze_fft1024.h Fix FFT read range (now inclusive) пре 9 година
analyze_notefreq.cpp Rename AudioAnalyzeGuitarTuner to AudioAnalyzeNoteFrequency пре 9 година
analyze_notefreq.h Rename AudioAnalyzeGuitarTuner to AudioAnalyzeNoteFrequency пре 9 година
analyze_peak.cpp Change peak detect API to conform to library conventions пре 10 година
analyze_peak.h Change peak detect API to conform to library conventions пре 10 година
analyze_print.cpp Change AudioAnalyzePrint name API пре 10 година
analyze_print.h Change AudioAnalyzePrint name API пре 10 година
analyze_rms.cpp rewrite AudioAnalyzeRMS - arm math version doesn't work! пре 9 година
analyze_rms.h rewrite AudioAnalyzeRMS - arm math version doesn't work! пре 9 година
analyze_tonedetect.cpp Fix more Teensy-LC compiler errors пре 9 година
analyze_tonedetect.h Add MIT license пре 10 година
control_ak4558.cpp Fixed control functions, examples, GUI elements пре 9 година
control_ak4558.h Fixed control functions, examples, GUI elements пре 9 година
control_sgtl5000.cpp Add SGTL5000 dacVolumeRamp functions & example пре 9 година
control_sgtl5000.h Add SGTL5000 dacVolumeRamp functions & example пре 9 година
control_wm8731.cpp AudioControlWM8731::inputLevel(float n) пре 9 година
control_wm8731.h AudioControlWM8731::inputLevel(float n) пре 9 година
data_ulaw.c Add missing open source license headers пре 10 година
data_waveforms.c Remove old AudioSynthWaveform пре 10 година
data_windows.c Add other window types for 1024 point FFT пре 10 година
effect_bitcrusher.cpp Fix compiler warning пре 9 година
effect_bitcrusher.h Add Bitcrusher effect (thanks Pensive) пре 9 година
effect_chorus.cpp Change Chrous effect to one channel пре 10 година
effect_chorus.h remove unimplemented stop() пре 10 година
effect_delay.cpp Remove unused multiplier пре 10 година
effect_delay.h Add AudioEffectDelay пре 10 година
effect_delay_ext.cpp Add support for Frank's 6-chip Memoryboard4 (AUDIO_MEMORY_MEMORYBOARD) пре 9 година
effect_delay_ext.h Add support for Frank's 6-chip Memoryboard4 (AUDIO_MEMORY_MEMORYBOARD) пре 9 година
effect_envelope.cpp Add AudioEffectEnvelope пре 10 година
effect_envelope.h Add AudioEffectEnvelope пре 10 година
effect_fade.cpp Add MIT license пре 10 година
effect_fade.h Add MIT license пре 10 година
effect_flange.cpp Change Flange effect to one channel пре 10 година
effect_flange.h remove unimplemented stop() пре 10 година
effect_multiply.cpp Fix more Teensy-LC compiler errors пре 9 година
effect_multiply.h Add AudioEffectMultiply пре 10 година
filter_biquad.cpp Fix more Teensy-LC compiler errors пре 9 година
filter_biquad.h Improve Biquad filter пре 10 година
filter_fir.cpp Impove and document FIR filter пре 10 година
filter_fir.h Impove and document FIR filter пре 10 година
filter_fir.md Change FIR filter (as suggested by rheslip) to filter one channel instead of two. Updated example, added documenting file пре 10 година
filter_variable.cpp Fix more Teensy-LC compiler errors пре 9 година
filter_variable.h Finish AudioFilterStateVariable (signal control of corner frequency) пре 10 година
input_adc.cpp Fix some Teensy-LC compiler errors пре 9 година
input_adc.h Fix AudioInputAnalog пре 10 година
input_i2s.cpp Fix more Teensy-LC compiler errors пре 9 година
input_i2s.h Use DMAChannel begin() пре 10 година
keywords.txt Add AudioAnalyzeRMS (thanks sgorpi) пре 9 година
library.json Handle all nested examples пре 9 година
library.properties Increase to version 1.03 пре 9 година
mixer.cpp Fix some Teensy-LC compiler errors пре 9 година
mixer.h Allow negative/inverting mixer gain пре 9 година
multiplier.md Add a multiplier (by rheslip) пре 10 година
new_objects.md change format for new_objects files пре 11 година
output_dac.cpp Initial work on DAC for Teensy-LC (still incomplete) пре 9 година
output_dac.h Initial work on DAC for Teensy-LC (still incomplete) пре 9 година
output_i2s.cpp Fix some Teensy-LC compiler errors пре 9 година
output_i2s.h Use DMAChannel begin() пре 10 година
output_pwm.cpp Fix more Teensy-LC compiler errors пре 9 година
output_pwm.h Make input ADC and output DAC play nicely together пре 10 година
output_spdif.cpp Fix more Teensy-LC compiler errors пре 9 година
output_spdif.h Add keywords пре 9 година
play_memory.cpp Add status and position functions to AudioPlayMemory пре 10 година
play_memory.h Add status and position functions to AudioPlayMemory пре 10 година
play_queue.cpp do not forget - your own addition :-) пре 10 година
play_queue.h do not forget - your own addition :-) пре 10 година
play_sd_raw.cpp Do not disable all interrupts while opening RAW files пре 9 година
play_sd_raw.h Fix status functions in AudioPlaySdRaw пре 10 година
play_sd_wav.cpp Fix stereo WAV file startup & end (first and last 3 milliseconds) пре 9 година
play_sd_wav.h Fix audible click at end of Wav file playing пре 10 година
play_serialflash_raw.cpp remove leftover debug code from AudioPlaySerialflashRaw пре 9 година
play_serialflash_raw.h Add AudioPlaySerialflashRaw пре 9 година
record_queue.cpp Fix harmless compiler warnings in AudioRecordQueue пре 10 година
record_queue.h Finish AudioRecordQueue and Record example пре 10 година
spi_interrupt.cpp Add SPI interrupt registration layer пре 10 година
spi_interrupt.h register SPI interrupt when playing WAV & RAW files пре 10 година
synth_dc.cpp Add AudioSynthWaveformDc пре 10 година
synth_dc.h simplify overflow checks somewhat пре 10 година
synth_pinknoise.cpp Clean up harmless compiler warnings пре 10 година
synth_pinknoise.h Add AudioSynthNoisePink пре 10 година
synth_sine.cpp Oops, transmit the hires sine low bits properly пре 9 година
synth_sine.h Add AudioSynthWaveformSineHires - High Precision Sine Wave пре 9 година
synth_tonesweep.cpp Fix up synth_tonesweep and the example to conform (more closely) to the naming conventions пре 10 година
synth_tonesweep.h Clean up harmless compiler warnings пре 10 година
synth_waveform.cpp #144: Add the reverse sawtooth and sample-and-hold waveforms. пре 9 година
synth_waveform.h #144: Add the reverse sawtooth and sample-and-hold waveforms. пре 9 година
synth_waveform.md Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave. пре 10 година
synth_whitenoise.cpp Fix more Teensy-LC compiler errors пре 9 година
synth_whitenoise.h Fix multiple white noise instances пре 10 година

README.md

Teensy Audio Library

Build Status

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