Write a method to quadruple the frequency of a sound.

What will be an ideal response?

```
/**
* Method to quadruple the frequency of a sound by taking
* every fourth sample. The result will be a higher
* sound.
*/
public void quadFreq ( )
f
// make a copy of the original sound
Sound s = new Sound ( this.getFileName ( ) ) ;
/* loop through the sound and increment target index
* by one but source index by 4 and settargetvalue
* to the copy of the original sound
*/
int target Index = 0 ;
for ( int source Index=0;
source Index < this.getLength ( ) ;
source Index=sour c e Index+4, t a r g e t Index++)
this. setSampleValueAt ( targe t Index ,
s.getSampleValueAt ( source Index ) ) ;
// clear out the rest of this sound
for ( int i = target Index ;
i < this.getLength ( ) ;
i++)
this . setSampleValueAt ( i , 0 ) ;
}
```