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Frank f0df80de7b Add F-RAM 7年前
examples Fix Tutorial 1-05 7年前
extras Fix format error: header chunkSize can be 16, 18, or 40 7年前
gui Add AudioEffectEnvelope releaseNoteOn 7年前
utility Replace DC removal algorithm with IIR HPF, 2 Hz 7年前
.gitignore Add documentation for new objects 8年前
.travis.yml Update Travis CI settings 8年前
Audio.h Add waveshaper documentation 7年前
AudioControl.h Add AudioSynthWaveformSine 10年前
README.md Update readme 7年前
analyze_fft256.cpp Initial work on FFT256 for Teensy-LC (untested) 9年前
analyze_fft256.h Do not assume AudioStream.h includes Arduino.h 8年前
analyze_fft1024.cpp Fix some Teensy-LC compiler errors 9年前
analyze_fft1024.h Do not assume AudioStream.h includes Arduino.h 8年前
analyze_notefreq.cpp Remove leftover debug code 8年前
analyze_notefreq.h NoteFrequency fixes 8年前
analyze_peak.cpp Add TODO for analyze peak optimization 8年前
analyze_peak.h Do not assume AudioStream.h includes Arduino.h 8年前
analyze_print.cpp Change AudioAnalyzePrint name API 10年前
analyze_print.h Do not assume AudioStream.h includes Arduino.h 8年前
analyze_rms.cpp Don't compile M4 code on LC (but LC still not working) 8年前
analyze_rms.h Do not assume AudioStream.h includes Arduino.h 8年前
analyze_tonedetect.cpp Fix more Teensy-LC compiler errors 9年前
analyze_tonedetect.h Do not assume AudioStream.h includes Arduino.h 8年前
control_ak4558.cpp Fixed control functions, examples, GUI elements 9年前
control_ak4558.h Fixed control functions, examples, GUI elements 9年前
control_cs4272.cpp Add CS4272 control (thanks William Hollender) 8年前
control_cs4272.h Add CS4272 control (thanks William Hollender) 8年前
control_cs42448.cpp Add AudioControlCS42448 7年前
control_cs42448.h Add AudioControlCS42448 7年前
control_sgtl5000.cpp Add ability to control two SGTL5000 chips 8年前
control_sgtl5000.h Add ability to control two SGTL5000 chips 8年前
control_wm8731.cpp AudioControlWM8731::inputLevel(float n) 9年前
control_wm8731.h AudioControlWM8731::inputLevel(float n) 9年前
data_ulaw.c Add missing open source license headers 10年前
data_waveforms.c Remove old AudioSynthWaveform 10年前
data_windows.c Add other window types for 1024 point FFT 10年前
effect_bitcrusher.cpp Fix compiler warning 9年前
effect_bitcrusher.h Do not assume AudioStream.h includes Arduino.h 8年前
effect_chorus.cpp Merge pull request #166 from FrankBoesing/patch-2 8年前
effect_chorus.h Do not assume AudioStream.h includes Arduino.h 8年前
effect_delay.cpp Fix delay effect on Teensy 3.5 & 3.6 7年前
effect_delay.h Fix delay effect on Teensy 3.5 & 3.6 7年前
effect_delay_ext.cpp Add SPI external memory timing comment 8年前
effect_delay_ext.h Add F-RAM 7年前
effect_envelope.cpp Add AudioEffectEnvelope releaseNoteOn 7年前
effect_envelope.h Add AudioEffectEnvelope releaseNoteOn 7年前
effect_fade.cpp Fix minor compiler warning 8年前
effect_fade.h Do not assume AudioStream.h includes Arduino.h 8年前
effect_flange.cpp Calculation of delay_rate_incr 8年前
effect_flange.h Do not assume AudioStream.h includes Arduino.h 8年前
effect_midside.cpp Don't compile M4 code on LC (but LC still not working) 8年前
effect_midside.h Do not assume AudioStream.h includes Arduino.h 8年前
effect_multiply.cpp Fix more Teensy-LC compiler errors 9年前
effect_multiply.h Do not assume AudioStream.h includes Arduino.h 8年前
effect_reverb.cpp Add reverb effect, from Joao Rossi Filho 8年前
effect_reverb.h Add reverb effect, from Joao Rossi Filho 8年前
effect_waveshaper.cpp Accept floats instead of int16_ts for waveshape in shape() 7年前
effect_waveshaper.h Accept floats instead of int16_ts for waveshape in shape() 7年前
filter_biquad.cpp Don't cause a loud pop when changing biquad filter coefficients 8年前
filter_biquad.h Add shelving filter support for biquad 8年前
filter_fir.cpp Impove and document FIR filter 10年前
filter_fir.h Do not assume AudioStream.h includes Arduino.h 8年前
filter_fir.md Change FIR filter (as suggested by rheslip) to filter one channel instead of two. Updated example, added documenting file 10年前
filter_variable.cpp Fix more Teensy-LC compiler errors 9年前
filter_variable.h Do not assume AudioStream.h includes Arduino.h 8年前
input_adc.cpp Further precision increase eliminates DC offset 7年前
input_adc.h Fix indentation and move filtercoefficient to #define constant instead of int32_t variable 7年前
input_adcs.cpp Further precision increase eliminates DC offset 7年前
input_adcs.h Fix indentation and move filtercoefficient to #define constant instead of int32_t variable 7年前
input_i2s.cpp Use 64 bit frame size for I2S master mode 7年前
input_i2s.h Do not assume AudioStream.h includes Arduino.h 8年前
input_i2s_quad.cpp Quad input on Teensy 3.5 & 3.6 needs pin 38 7年前
input_i2s_quad.h Do not assume AudioStream.h includes Arduino.h 8年前
input_tdm.cpp Add AudioInputTDM 7年前
input_tdm.h Add AudioInputTDM 7年前
keywords.txt Add AudioEffectEnvelope releaseNoteOn 7年前
library.json Let PlatformIO automatically detect Arduino v1.0 library format 8年前
library.properties Edit version string, for Arduino 1.6.11 compatibility 8年前
memcpy_audio.S Allow blocksizes 8 and 16 8年前
memcpy_audio.h Add memcpy_tointerleaveQuad (thanks Frank) 8年前
mixer.cpp Fix some Teensy-LC compiler errors 9年前
mixer.h Do not assume AudioStream.h includes Arduino.h 8年前
multiplier.md Add a multiplier (by rheslip) 10年前
new_objects.md change format for new_objects files 11年前
output_dac.cpp More hardware defs 8年前
output_dac.h Do not assume AudioStream.h includes Arduino.h 8年前
output_dacs.cpp Fix AudioOutputAnalogStereo analogReference 8年前
output_dacs.h Add AudioOutputAnalogStereo 8年前
output_i2s.cpp Use 64 bit frame size for I2S master mode 7年前
output_i2s.h Do not assume AudioStream.h includes Arduino.h 8年前
output_i2s_quad.cpp Fix simultaneous quad input & output on Teensy 3.6 with CPU > 120 MHz 7年前
output_i2s_quad.h Do not assume AudioStream.h includes Arduino.h 8年前
output_pt8211.cpp Add a comment for TDA1543 7年前
output_pt8211.h changed defines to be more specific 8年前
output_pwm.cpp Fix BUG for AUDIO_BLOCK_SAMPLES != 128 8年前
output_pwm.h Do not assume AudioStream.h includes Arduino.h 8年前
output_spdif.cpp Support more clock speeds 8年前
output_spdif.h Do not assume AudioStream.h includes Arduino.h 8年前
output_tdm.cpp Add AudioInputTDM 7年前
output_tdm.h Add AudioInputTDM 7年前
play_memory.cpp Fix hard-coded 128 block size limits 8年前
play_memory.h Do not assume AudioStream.h includes Arduino.h 8年前
play_queue.cpp do not forget - your own addition :-) 10年前
play_queue.h Do not assume AudioStream.h includes Arduino.h 8年前
play_sd_raw.cpp Fix for two little bugs 8年前
play_sd_raw.h Do not assume AudioStream.h includes Arduino.h 8年前
play_sd_wav.cpp Fix AudioPlaySdWav status functions with LTO 7年前
play_sd_wav.h Do not assume AudioStream.h includes Arduino.h 8年前
play_serialflash_raw.cpp remove leftover debug code from AudioPlaySerialflashRaw 9年前
play_serialflash_raw.h Do not assume AudioStream.h includes Arduino.h 8年前
record_queue.cpp Fix harmless compiler warnings in AudioRecordQueue 10年前
record_queue.h Do not assume AudioStream.h includes Arduino.h 8年前
spi_interrupt.cpp Add SPI interrupt registration layer 10年前
spi_interrupt.h Do not assume AudioStream.h includes Arduino.h 8年前
synth_dc.cpp Fix hard-coded 128 block size limits 8年前
synth_dc.h Add AudioSynthWaveformDc read() 7年前
synth_karplusstrong.cpp Decay resonance (loop gain) slightly in Karplus Strong 8年前
synth_karplusstrong.h Add Synthesis Guitar example 8年前
synth_pinknoise.cpp Clean up harmless compiler warnings 10年前
synth_pinknoise.h Do not assume AudioStream.h includes Arduino.h 8年前
synth_pwm.cpp Minor optimization in AudioSynthWaveformPWM 7年前
synth_pwm.h Add AudioSynthWaveformPWM 7年前
synth_simple_drum.cpp Adding SimpleDrum synthesis object to audio library. 8年前
synth_simple_drum.h Adding SimpleDrum synthesis object to audio library. 8年前
synth_sine.cpp fix incorrect comment 8年前
synth_sine.h Do not assume AudioStream.h includes Arduino.h 8年前
synth_tonesweep.cpp fix tonesweep 8年前
synth_tonesweep.h Do not assume AudioStream.h includes Arduino.h 8年前
synth_waveform.cpp #144: Add the reverse sawtooth and sample-and-hold waveforms. 9年前
synth_waveform.h Do not assume AudioStream.h includes Arduino.h 8年前
synth_waveform.md Fixed AudioSynthWaveform. Uses LUT with linear interpolation for sinewave. 10年前
synth_whitenoise.cpp Fix more Teensy-LC compiler errors 9年前
synth_whitenoise.h Do not assume AudioStream.h includes Arduino.h 8年前

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/index.html

Supported Hardware

Audio Adaptor Board for 16 bit stereo input and output.

Inputs Outputs

Dual Audio Adaptor Boards for quad channel 16 bit input and output.

Teensy 3.6, Teensy 3.5, Teensy 3.2, or Teensy 3.1 12 bit DAC Output (Mono)

DAC Output

Teensy 3.6, Teensy 3.5, Teensy 3.2, Teensy 3.1 or Teensy 3.0 ADC Input (Mono)

ADC Input

Teensy 3.6, Teensy 3.5, or Teensy 3.2 ADC Input (Stereo)

ADC Input

Teensy 3.6 or Teensy 3.5 12 bit DAC Output (Stereo)

DAC Output

Teensy 3.6, Teensy 3.5, Teensy 3.2, Teensy 3.1 or Teensy 3.0 PWM Output (Mono)

PWM Output

USB Audio: Bi-Directional Stereo Streaming to a PC

Inputs Outputs