Robust Estimation of Reverberation Time Using Polynomial Roots

Ian Kelly
Francis Boland
AES 60th Conference on Dereverberation and Reverberation of Audio, Music, and Speech, Google Ireland Ltd.(2016)
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This paper further investigates previous findings that coefficients of acoustic responses can be modelled as random polynomials with certain constraints applied. In the case of room impulse responses, the median value of their clustered roots has been shown to be directly related to the reverberation time of the room. In this paper we examine the frequency dependency of reverberation time and we also demonstrate the method’s robustness to truncation of impulse responses.