Lack of distance attenuation in ray-tracing

[Achillx]

When simulating a room with very low absorption coefficients (0.001) and only the image-source method, the IR looks as expected.

When ray-tracing is True, the IR displays an "endless" reverb tail, indicating there is no distance attenuation applied.

The documentation confirms that (unless I misunderstood something) The constructed RIR still lacks air absorption and distance absorption.

Is there a reason why this is the case, and is it possible to add distance attenuation to ray tracing as well?

[fakufaku]

Hi @Achillx , ray tracing does distance attenuation and I think what you are observing is the correct output of the simulator.

An absorption of 0.001 means that very little energy is absorbed by the walls, leading to very long reverberation time.

If you want to add air absorption, you can do so by setting air_absorption=True in the room constructor.