How to play a set of frequencies (Chords) at the same time with javax.sound.sampled package

Question

I am trying to implement a system where I give a set of frequencies to be played at once, currently can play each frequency individually. Below I have a code, that plays the giv

Answer 1

In this example, Tone opens a single SourceDataLine for each Note, but you can open as many lines as there are notes in your chord. Then simply write() each Note of the chord to a separate line. You can create an arpeggio effect by using Note.REST.

Answer 2

you could use different threads for each frequence :)

here you can find a small example of threads in java

I hope this helps you :)

Answer 3

Simply sum the sample values at each time point, and divide by an appropriate scaling factor to keep your values in range. For example, to play A 440 and C 523.25 at the same time:

double[] a = tone(440,1.0);
double[] b = tone(523.25,1.0);
for( int i=0; i<a.length; ++ i )
   a[i] = ( a[i] + b[i] ) / 2;
StdAudio.play(a);