i want to test if an audio listener listen to a particular audioclip?

hi all,
i want to test if an audio listener listen to a particular audioclip?
is there a function or something else.
thx in advance.

What do you mean? A listener will “listen” to all playing audioSources in the scene, providing they are not too far away (depending on your rolloff settings).

If you mean how to know that an audioSource can be heard, you could check the distance between the listener ans the source and do the maths according to your rolloff settings and volume.