Could you please let know, how to use FMOD for the distance measurement by measuring the delay of the sound that is reaching the object from the speaker.
Now I am able to create 3 .wav files as I mentioned above.
I am playing the sound from the speaker. Even I tried using the same channelgroup for all the 3 .wav file creation
FMOD will not automatically delay sounds that are further from the listener based on the speed of sound, this is why you are hearing them all at the same time. You need to author your Events to take this into account if you want that behavior.