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We are using Maya locators to define 3D reverb spheres in our game that morph the global reverb with set3DAttributes. The locators define X,Y,Z, min/max radius, and associated reverb preset name. My understanding is that there is only one reverb DSP at work, and that when the camera moves into a locator sphere the parameters associated with the locator are blended with the default reverb until the camera is inside the min radius, where the global reverb then has blended completely to the verb paramaters of the verb preset associated with it.

First is that correct?

I’ve placed many locators, somewhat overlapping through the length of tunnels, and other closed spaces, but at some point when I hit a certain number of locators on a map(I haven’t counted) voices start disappearing. The more I add past this point, the more disappear. If I delete a bunch, they come back. I can’t imagine why this would happen unless these locators are counted as voices for some reason? Is this the case? Or should I just jack up the virtual voice limit?

I’m currently using FMod EX 4.24.13, FMod Designer 4.27.01, 360 XDK 9328.0 and 360 Flash 8464

Any help would be appreciated as I haven’t found much information regarding real world use of this type of reverb implementation.

PS, yes we considered using volumes to define a section of the map as having a specific reverb preset, but decided to take this approach since the verb can morph as the camera moves in and out of various spheres and will help add movement and perceived modulation to our reverb.

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Hi, You’re right about there being 1 physical DSP and it blends the sphere settings based on the position inside the sphere(s).

I can’t say what your issue is right now, i’d like to reproduce it – maybe it has to do with a specific location that has a specific number of overlapping spheres? Can you find out this information or does it seem to happen randomly based on the number of spheres?

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As far as I can tell so far it appears to be directly related to the number of spheres in the map. Once we get to somewhere above a hundred spheres, voices start dropping, and more drop out as additional spheres are added. I haven’t gotten to the point of applying spheres to other maps in our game yet, for what it’s worth.

I’ll be able to get one of our engineers to debug it next week sometime, I’ll follow up when I know more. If you have any suggestions let me know.

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