Rewrite the echo method to generate two echoes back, each delay samples previous. Hint: Start your index loop at 2*delay, then access one echo sample at index-delay and another at index - 2*delay.

What will be an ideal response?

```
/**
* Method to add two echoes to a sound
* @param d e l a y the number of samples b e f o r e
* the echo s t a r t s
*/
public void echo2 ( int de lay )
f
// make a copy of the o r i g i n a l sound
Sound s = new Sound ( this . getFi leName ( ) ) ;
int value = 0 ;
// loop from d e l a y to end of sound
for ( int i = 2¤ de lay ; i < this . getLength ( ) ; i++) {
/* g e t the v a lue back by d e l a y samples from the
* copy of the sound and make i t f a i n t e r
*/
value = ( int ) ( s . getSampleValueAt ( --de lay ) *
0 . 4 ) +
( int ) ( s . getSampleValueAt ( i ¡ (2 * de lay ) ) * 0 . 2 ) ;
/* s e t the v a lue at the cur r ent inde x to the sum
* of the cur r ent v a lue and the echo
*/
this . setSampleValueAt ( i ,
s . getSampleValueAt ( i ) +
value ) ;
}
}
```