Particle Collision Sound

… In next image you can see a ’ Particle System ’ emits some particles and these particles collide with grey plane and bounce well … I tried a lot to make a sound effect play Syncing with particle collisions but the sound didn’t work, I searched a lot but I didn’t find any solution:

The Image:

The Code:

function OnParticleCollision (other : GameObject) {
    audio.Play();
}

You might need for these:
http://docs.unity3d.com/Documentation/Components/class-WorldParticleCollider.html

Worked, Thanks Preetthefire