Interrupted sounds when using Probability setting and Max Instances = 1 / Stealing = Oldest

FMOD Studio
2

Hi,

The issue is, the 50% trigger is on the Single Instrument (FMOD Studio | Instrument Reference - Single Instrument) rather than the Event (FMOD Studio | FMOD Studio Concepts - Event) resulting in the event being started 100% of the time and the instrument only being triggered 50% of the time which is not the behavior you are expecting.

There are a few solutions:

  1. Using a Command Instrument (FMOD Studio | Instrument Reference - Command Instrument) with a 50% trigger probability that is on a different bus. Now the event containing the command instrument (Trigger Event) can be triggered multiple times and not stop Event 1 incorrectly. Here you can see that the Trigger Event being started without interrupting the Idle Event unless the Damage Event is played:
    image
    which hopefully is the behavior you are looking for.

  2. Triggering Event 2 via code that works with a random number range. This way you avoid any events being started till they are needed.

float random = Random.Range(0.0f, 1.0f);
if (random >= 0.5)
{
    emitter1.Play();
}

Let me know if either of these options will work for your situation.