Fast ISM simulation: audio data example
This page contains an example of the results obtained with IS-DRM, a method based on a diffuse reverberation model (DRM) for the simulation of room impulse responses (RIRs) according to the image-source (IS) method. See  for implementation details. The following figure provides an overview of the simulation setup.
The environment is a 4 x 5 x 2.7 m3 room with reverberation time T60 = 0.55 s. The sound source moves along a 2.64 m circular trajectory at a constant height of 1.55 m, and the acoustic receivers are located at a height of 1.35 m.
The following data sample was used as source signal: anechoic_source_signal.wav [280kB]
The following audio samples are the result from ISM simulations in the considered environment:
The simulation time required by the standard ISM for the coarsely-sampled trajectory (212 RIRs) was approximately nine hours on a standard desktop computer (2.4GHz), whereas the IS-DRM method generated the audio data for the finely-sampled trajectory (1056 RIRs) in about 21 minutes.