I’m using PHASE for an outdoor soundscape with only .directPathTransmission enabled.
A point source and listener are 2 metres apart. Between them is a PHASEOccluder built from a 2 × 2 × 0.02 metre MDLMesh box, with a .cardboard material assigned to every shape element.
Without the occluder, the sound is loud. With it, the sound is completely inaudible. Switching to .glass and setting the sampler’s cullOption to .doNotCull makes no audible difference. This happens on both iOS Simulator and a physical iPhone.
Adding .lateReverb produces faint audible sound, but room reverb is inappropriate for this outdoor scene and doesn’t establish whether direct transmission works.
Is this expected attenuation, or is additional configuration required to hear muffled sound through an occluder? Is there a working sample demonstrating material-dependent transmission with reverb disabled?