Okay, this question is going to show you just how audio illiterate I am, but here it goes anyhow.

I need to do some audio analysis.  Simple enough.  But I want to use saveFrame to save out screengrabs so I can piece together the result into a quicktime and then paste in the audio (Like I used to do with Sonia until my new Intel Mac rendered jSyn useless for now).  So this means I need to do my analysis at a specified framerate instead of realtime.

I am porting over my code from Sonia and I am running into some problems.

1) With Sonia, I could say mySample.play(starttime, endtime) and play a specific portion of the total audio, but I cannot figure out how to do this with ESS aside from using cue(starttime) and trying to make it pause once endtime is reached.  Is there a way to play the audio directly from a sample array of floats?

2) Right now, I am analyzing every 1/24th of a second of audio and then getting the FFT for that 1/24th of a second.  I do that by copying over sample frames to my sample float array and then dealing with that.  But is there a different easier way I am overlooking (that could possibly solve problem #1? See my code below.

Code:

void prepareClip(){
  startTime	= int(myTime * sampleRate);
  endTime	  = startTime + sampleLength;
    
  for (int i=startTime; i<endTime; i++){
    sample[i - startTime] = myChannel.samples[i];
  }
  myFFT.getSpectrum(sample, 0);  
  myTime	  += (1.0/float(framerate));
}
 

Any help would be appreciated.  Thanks.