音信号の分離方法 - National University Corporation Tokyo University

Title:

音信号の分離方法

Document Type and Number:

Japanese Patent JP5294300

Kind Code:

B2

Abstract:

The present invention obtains a separated signal from an audio signal based on the anisotropy of smoothness of spectral elements in the time-frequency domain. A spectrogram of the audio signal is assumed to be a sum of a plurality of sub-spectrograms, and smoothness of spectral elements of each sub-spectrogram in the time-frequency domain has directionality on the time-frequency plane. The method comprises obtaining a distribution coefficient for distributing spectral elements of said audio signal in the time-frequency domain to at least one sub-spectrogram based on the directionality of the smoothness of each sub-spectrogram on the time-frequency plane, and separating at least one sub-spectrogram from said spectral elements of said audio signal using said distribution coefficient.

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Inventors:

Shigeki Sagayama
Junki Ono
Hirokazu Kameoka
Kenichi Miyamoto
Le Roux Jonaton

Application Number:

JP2008054826A

Publication Date:

September 18, 2013

Filing Date:

March 05, 2008

Export Citation:

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