Method and apparatus for estimating spectrum density of diffused noise

摘要

Provided are a method for estimating a spectrum density of diffused noises. Also provided is a processor for implementing the method. The processor includes at least two sound receiving units and a spectrum density estimating unit for estimating spectrum density.

主权项

1. A processor device comprising:
at least two sound receiving units configured to receive sounds; a correlation estimating unit configured to estimate a correlation between diffused noises included in the sounds received by the at least two sound receiving units; and a spectrum density estimating unit configured to estimate a spectrum density with respect to the diffused noises based on the estimated correlation, wherein the spectrum density estimating unit comprises:
an eigenvalue estimating unit configured to estimate an eigenvalue of a covariance matrix based on the sound received by the at least two sound receiving units; anda low frequency band compensating unit configured to compensate a low frequency band of spectrum density with respect to the diffused noises based on the estimated eigenvalue and the estimated correlation.