I'm trying to estimate RT60 based on reverberant sound. In order to generate reverberant sound, I am required to give dimensions of a room so that RIR is generated and is convolved with clean sound.
While reading few papers, they had different room dimensions and RIRs ranging from 0.1s to 1.5s.This had me puzzled. Now I'm trying to find out if it is possible to get RIR from a particular room dimension (lets say 5ftx5ftx10ft) so that it gives a specific RT60 (say 0.3s)
Here is one paper for example: https://arxiv.org/pdf/2302.04932.pdf
Table 1 in the paper shows the different room dimensions and the ending of the following paragraph states:
''' We simulate 200 RIRs for each room, which results in a total of 200×3=600 RIRs. We convolve each of the RIRs with one signal from the TIMIT test set, resulting in a total of 600 signals. The T60s range from 0.5 s to 1 s. '''
So, my question is, is there a way to create an RIR for a particular room dimension so that it has a specific reverberation time?