Version: 2018.4
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AudioSource.spread

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public float spread;

Description

Sets the spread angle (in degrees) of a 3d stereo or multichannel sound in speaker space.

0 = all sound channels are located at the same speaker location and is 'mono'. 360 = all subchannels are located at the opposite speaker location to the speaker location that it should be according to 3D position. Default = 0.

using UnityEngine;

public class Example : MonoBehaviour { // when any AudioSource goes trough this transform, it will set it as 'mono' // and will restore the value to 3D effect after exiting // Make sure the audio source has a collider. void OnTriggerEnter(Collider other) { AudioSource audio = other.GetComponent<AudioSource>();

if (audio) { audio.spread = 0; } }

void OnTriggerExit(Collider other) { AudioSource audio = other.GetComponent<AudioSource>();

if (audio) { audio.spread = 360; } } }

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