Minim minim.loadFile() doesn't work in my processing sketch when I specify a file path. I've included the sketch that refuses to run, I get unexpected char 'p' as an error. The sketch runs when I use the default path with minim.loadFile(). I don't know if this is a known problem as I haven't found the bug list for minim.
import ddf.minim.spi.*;
import ddf.minim.signals.*;
import ddf.minim.*;
import ddf.minim.analysis.*;
import ddf.minim.ugens.*;
import ddf.minim.effects.*;
/**
* This sketch demonstrates the difference between linearly spaced averages and logarithmically spaced averages
* (averages that are grouped by octave). It also draw the full spectrum so you can see how each set of averages
* compares to it.
* <p>
* From top to bottom:
* <ul>
* <li>The full spectrum.</li>
* <li>The spectrum grouped into 30 linearly spaced averages.</li>
* <li>The spectrum grouped logarithmically into 10 octaves, each split into 3 bands.</li>
* </ul>
*
*/
import ddf.minim.analysis.*;
import ddf.minim.*;
Minim minim;
AudioPlayer jingle;
FFT fftLin;
FFT fftLog;
float height3;
float height23;
void setup()
{
size(512, 300);
height3 = height/3;
height23 = 2*height/3;
minim = new Minim(this);
jingle = minim.loadFile("C:\processing sketch book\audio_file\data\jingle.mp3",2048);
//jingle = minim.loadFile("jingle.mp3", 2048);
// loop the file
jingle.loop();
// create an FFT object that has a time-domain buffer the same size as jingle's sample buffer
// note that this needs to be a power of two
// and that it means the size of the spectrum will be 1024.
// see the online tutorial for more info.
fftLin = new FFT(jingle.bufferSize(), jingle.sampleRate());
// calculate the averages by grouping frequency bands linearly. use 30 averages.
fftLin.linAverages(30);
fftLog = new FFT(jingle.bufferSize(), jingle.sampleRate());
// calculate averages based on a miminum octave width of 22 Hz
// split each octave into three bands
// this should result in 30 averages
fftLog.logAverages(22, 3);
rectMode(CORNERS);
}
void draw()
{
background(0);
// perform a forward FFT on the samples in jingle's mix buffer
// note that if jingle were a MONO file, this would be the same as using jingle.left or jingle.right
fftLin.forward(jingle.mix);
stroke(255);
noFill();
// draw the full spectrum
for(int i = 0; i < fftLin.specSize(); i++)
{
line(i, height3, i, height3 - fftLin.getBand(i)*2);
}
noStroke();
fill(255);
// draw the linear averages
int w = int(width/fftLin.avgSize());
for(int i = 0; i < fftLin.avgSize(); i++)
{
// draw a rectangle for each average, multiply the value by 5 so we can see it better
rect(i*w, height23, i*w + w, height23 - fftLin.getAvg(i)*5);
}
// draw the logarithmic averages
fftLog.forward(jingle.mix);
w = int(width/fftLog.avgSize());
for(int i = 0; i < fftLog.avgSize(); i++)
{
// draw a rectangle for each average, multiply the value by 5 so we can see it better
rect(i*w, height, i*w + w, height - fftLog.getAvg(i));
}
}
void stop()
{
// always close Minim audio classes when you are done with them
jingle.close();
// always stop Minim before exiting
minim.stop();
super.stop();
}