Generating Audio in Android (by playing multiple short audio files concurrently)

Hi Everyone

I would like to generate sounds using Processing for Android. The way I would like to do that is by generating individual pulses and varying the timing between them (Shorter interval = higher pitch).

[I'm using this audio to generate haptic feedback - ultimately planning on running an experiment with it, that's why I need this type of low level control over the audio output - I'm essentially trying to recreate something that I have built in MAX/MSP a while ago]

I was hoping to prerecord an impulse and then play it say, every ~20 milliseconds. I just started tinkering with the cassette library for doing this (https://github.com/shlomihod/cassette) however, I am unable to play the same sound multiple times concurrently:

Lets say my audio file is 1 second long and I try to do this:

     pulse = new SoundFile(this, "impulse.wav");
     pulse.play();
     delay(20);
     pulse.play();

the second pulse does not play (because the first one is still playing)

I need to do this:

    pulse = new SoundFile(this, "impulse.wav");
    pulse1 = new SoundFile(this, "impulse.wav");
    pulse.play();
    delay(20);
    pulse1.play();

now I hear both pulses.

Obviously loading the pulse thousends of times on program start is a clumsy way of doing this. Does anyone have any other suggestions on how to set this up? Please not that I need to be able to set the interval between two pulses individually for each interval.

Is this even feasible?

How would you approach this?