| Mozzi version v1.1.0 sound synthesis library for Arduino |

02.Control/EventDelay/EventDelay.ino

This example shows how to use the EventDelay class.

/* Example of a sound being toggled on an off,
using Mozzi sonification library.
Demonstrates scheduling with EventDelay.
EventDelay is a way to make non-blocking
time delays for events. Use this instead of
the Arduino delay() function, which doesn't
work with Mozzi.
Circuit: Audio output on digital pin 9 on a Uno or similar, or
DAC/A14 on Teensy 3.1, or
check the README or http://sensorium.github.io/Mozzi/
Mozzi documentation/API
https://sensorium.github.io/Mozzi/doc/html/index.html
Mozzi help/discussion/announcements:
https://groups.google.com/forum/#!forum/mozzi-users
Tim Barrass 2012, CC by-nc-sa.
*/
#include <MozziGuts.h>
#include <Oscil.h> // oscillator template
#include <tables/sin8192_int8.h> // sine table for oscillator
#include <EventDelay.h>
#define CONTROL_RATE 64
// use: Oscil <table_size, update_rate> oscilName (wavetable), look in .h file of table #included above
Oscil <SIN8192_NUM_CELLS, AUDIO_RATE> aSin(SIN8192_DATA);
// for scheduling audio gain changes
EventDelay kGainChangeDelay;
char gain = 1;
void setup(){
startMozzi(CONTROL_RATE);
aSin.setFreq(330); // set the frequency
kGainChangeDelay.set(1000); // 1 second countdown, within resolution of CONTROL_RATE
}
void updateControl(){
if(kGainChangeDelay.ready()){
gain = 1-gain; // flip 0/1
kGainChangeDelay.start();
}
}
AudioOutput_t updateAudio(){
return AudioOutput::from8Bit(aSin.next()*gain);
}
void loop(){
audioHook();
}