* Copyright (c) 2014, Paul Stoffregen, paul@pjrc.com
*/* Audio Library for Teensy 3.X
* Development of this audio library was funded by PJRC.COM, LLC by sales of
* Teensy and Audio Adaptor boards. Please support PJRC's efforts to develop
* open source software by purchasing Teensy or other PJRC products.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice, development funding notice, and this permission
* notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef Audio_h_
#define Audio_h_
// When changing multiple audio object settings that must update at
// the same time, these functions allow the audio library interrupt
// to be disabled. For example, you may wish to begin playing a note
// in response to reading an analog sensor. If you have "velocity"
// information, you might start the sample playing and also adjust
// the gain of a mixer channel. Use AudioNoInterrupts() first, then
// make both changes to the 2 separate objects. Then allow the audio
// library to update with AudioInterrupts(). Both changes will happen
// at the same time, because AudioNoInterrupts() prevents any updates
// while you make changes.
//
#define AudioNoInterrupts() (NVIC_DISABLE_IRQ(IRQ_SOFTWARE))
#define AudioInterrupts() (NVIC_ENABLE_IRQ(IRQ_SOFTWARE))
// include all the library headers, so a sketch can use a single
// #include <Audio.h> to get the whole library
//
#include "analyze_fft256.h"
#include "analyze_fft1024.h"
#include "analyze_print.h"
#include "analyze_tonedetect.h"
#include "analyze_peakdetect.h"
#include "control_sgtl5000.h"
#include "control_wm8731.h"
#include "effect_chorus.h"
#include "effect_fade.h"
#include "effect_flange.h"
#include "filter_biquad.h"
#include "filter_fir.h"
#include "input_adc.h"
#include "input_i2s.h"
#include "mixer.h"
#include "output_dac.h"
#include "output_i2s.h"
#include "output_pwm.h"
#include "play_memory.h"
#include "play_queue.h"
#include "play_sd_raw.h"
#include "play_sd_wav.h"
#include "synth_tonesweep.h"
#include "synth_sine.h"
#include "synth_waveform.h"
#include "analyze_freq.h"
// TODO: more audio processing objects....
// sine wave with frequency modulation (phase)
// waveforms with bandwidth limited tables for synth
// envelope: attack-decay-sustain-release, maybe other more complex?
#endif
. 96Khz is just dumb. The other one is sigma-delta converters. The distribution of noise is generally accepted as more pleasing. I did a project using the ADCs in the Kinetis for a guitar: