Hi all,

I'm trying to generate a simple sine wave using the Sonia library, and can't seem to get it right.  There is a glitch in the wave that gives a nasty click, but I can't for the life of me work out what is causing it or how to resolve it!

Using the below code the n key will stop the wave, and m will restart it.  There seems to be a few regular patterns of click that re-occur on different restarts, and occasionally it will run OK, but that is rare.

Can anyone help?

Cheers
Phil

import pitaru.sonia_v2_9.*;

int bufSize = 2048;
float SR = 44100;
float oneHertz = TWO_PI / SR;
float freq = 440 * oneHertz;
float amp = 0.5;
float phs = 0;

void setup()
{
 size(512,512);
 Sonia.start(this,44100);
 LiveOutput.start(bufSize, bufSize * 2);
 LiveOutput.startStream();
 stroke(255);
 strokeWeight(4);
}

void liveOutputEvent()
{
 for (int n = 0; n < bufSize; n++)
   LiveOutput.data[n] = amp * sin (freq * n + phs);
 phs+=freq * bufSize;
}

void draw()
{
 background(0);
 for(int n = 0; n < min(width, bufSize); n++)
   point(n, height*(0.5-0.5*LiveOutput.data[n]));
}

void keyTyped()
{
if (key=='m')
  LiveOutput.stopStream();
 
if (key=='n')
  LiveOutput.startStream();
}