Tag: sketch

Have finally cracked getting my own samples into Mozzi. The sound clips need to be VERY short (around 0.5 seconds) or they are too big for the Nano. I also tried mono to see if that saved space, but then there was no sound at all. I really raised the volume of this sample and the clipping isn’t too noticeable compared to the previously-encoded version , as it clips because of the processing anyway.

Here’s the code:

/*  Example of playing a sampled sound,
    using Mozzi sonification library.
  
    Demonstrates one-shot samples scheduled
    with EventDelay.
  
    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.com/Mozzi/
  
    Mozzi help/discussion/announcements:
    https://groups.google.com/forum/#!forum/mozzi-users
  
    Tim Barrass 2012, CC by-nc-sa.
*/

#include <MozziGuts.h>
#include <Sample.h> // Sample template
#include <samples/alienwave.h>
#include <EventDelay.h>

#define CONTROL_RATE 64

// use: Sample <table_size, update_rate> SampleName (wavetable)
Sample <alienwave_NUM_CELLS, AUDIO_RATE> aSample(alienwave_DATA);

// for scheduling sample start
EventDelay kTriggerDelay;

void setup(){
  startMozzi(CONTROL_RATE);
  aSample.setFreq((float) alienwave_SAMPLERATE / (float) alienwave_NUM_CELLS); // play at the speed it was recorded
  kTriggerDelay.set(1500); // 1500 msec countdown, within resolution of CONTROL_RATE
}


void updateControl(){
  if(kTriggerDelay.ready()){
    aSample.start();
    kTriggerDelay.start();
  }
}


int updateAudio(){
  return (int) aSample.next();
}


void loop(){
  audioHook();
}

With thanks to Tim Barass and his very helpful forum for help getting this working.