hello,

this is more like a syntax question but since its related to the minim library, i decided to post here. I've got some code but I need to make it more efficient or optimize it somehow. I do something like this:

void draw
{
  for (int i = 0; i < fft.specSize(); i++)
  {
   line( x1, y1, fft.getBand(i), fft.getBand(i))  }
  }
}


a lot of times in the code.

This creates some occasional glithces and screen refresh rate problems on my macbook ( 2Ghz intel 2 dual core ) I was thinking, if I create an array and put that getBand value to this array once in every loop of the program (say, in the beginning of ( void draw{} )) and use that array instead of fft.getBand(i) each time I need it, I would save a lot of cpu power. (by not calculating all these every time I use this function) Would it help? If so, can someone show me how to do this?

float[] map;

map = new float[fft.specSize()];

for (i = 0; i < fft.specSize; i++)
{
map[] = fft.getBand(i);
}

this doesn't work.

Also, I set the buffer size for the audio file that is played back as 1024 when creating the new AudioPlayer object. is this the same as fft.specSize() ? (so that I could put 1024 instead of fft.specSize() each time I use this 'for' loop and save some cpu power from calculating the spectrum size again and again)

do you think I get this right?

Can someone suggest how to optimize my code?

Thanks a lot.

Emre.

I think you may be wasting your time copying it, as I think that the data is already held within the FFT as an array, which is only updated when you call fft.forward(...) so copying the data won't add any speed up.

> I think you may be wasting your time copying it, as I think that the data is already held within the FFT as an array, which is only updated when you call fft.forward(...) so copying the data won't add any speed up.

using a lookup to a local copy of an array will be faster than calling a method on an object, i'd've thought. but, yes, you'd have to be doing this lookup multiple times to justify the expense of the copying.