残響音場における音響信号のエンベロープ推定法の評価

概要

論文の詳細を見る
Blind convolution and deconvolution are fundamental signal processing techniques in acoustics Recently, many blind techniques which do not involve measurement of the impulse response have been proposed. The purpose of this study is to evaluate blind envelope estimations involving the carrier modeling of the source signal and room impulse response. We compare the envelope convolution method and power envelope convolution method on an experimental basis. The result of the envelope estimation obtained by the power envelope convolution method is better than that obtained by the other method. In the reverberant envelope estimation experiment by carrier signal of complex smewaves, the distortion of the envelope can be reduced by about 10 dB. In the blind dereverberation of speech, the distortion can also be reduced by 2-5dB
日本シミュレーション学会の論文
2003-09-15