INTERSPEECH 2008
9th Annual Conference of the International Speech Communication Association

Brisbane, Australia
September 22-26, 2008

Sudden Noise Reduction Based on GMM with Noise Power Estimation

Nobuyuki Miyake, Tetsuya Takiguchi, Yasuo Ariki

Kobe University, Japan

This paper describes a method for reducing sudden noise using noise detection and classification methods, and noise power estimation. Sudden noise detection and classification have been dealt with in our previous study. In this paper, noise classification is improved to classify more kinds of noises based on k-means clustering, and GMM-based noise reduction is performed using the detection and classification results. As a result of classification, we can determine the kind of noise we are dealing with, but the power is unknown. In this paper, this problem is solved by combining an estimation of noise power with the noise reduction method. In our experiments, the proposed method achieved good performance for recognition of utterances overlapped by sudden noises.

Full Paper

Bibliographic reference.  Miyake, Nobuyuki / Takiguchi, Tetsuya / Ariki, Yasuo (2008): "Sudden noise reduction based on GMM with noise power estimation", In INTERSPEECH-2008, 403-406.