◆ transmissionLoss

AkReal32 AkAcousticSurface::transmissionLoss

Transmission loss value to apply when simulating sound transmission through this geometric surface. Transmission is only simulated on a sound when the sound has Enable Diffraction and Transmission box enabled in Wwise Authoring.

If more than one surface is intersected between the emitter and the listener, the result depends on AkSpatialAudioInitSettings::eTransmissionOperation. The default behavior is to use the maximum of all surfaces' transmission loss values.

Transmission loss is applied on the mix connection between the emitter and the listener for the dry path, and between the emitter and the room for the wet path. The transmission loss value is converted to volume attenuation, low-pass and/or high-pass filtering, using the transmission loss curves defined on the sound in Wwise Authoring.

A transmission loss value of 0 has special meaning in some contexts:

Setting a transmission loss value of 0 effectively disables a surface for ray intersection. It is ignored for all diffraction and reflection calculations.
When geometry is used to define the shape of a Reverb Zone, surfaces with a transmission loss of 0 define the center of the transition between the Reverb Zone and its parent Room. Only surfaces with transmission loss of 0 define the transition region, allowing the user to have transitions around parts of the geometry (certain walls, for example), and not others. Valid range: (0.f-1.f)
AkRoomParams
AK::SpatialAudio::SetReverbZone

Definition at line 246 of file AkSpatialAudio.h.

Wwise SDK

transmissionLoss

◆ transmissionLoss

Was this page helpful?

Need Support?

Tell us about your project. We're here to help.