Title:
NOISE SUPPRESSION DEVICE, NOISE SUPPRESSION METHOD, AND NOISE SUPPRESSION PROGRAM
Document Type and Number:
Japanese Patent JP2017015774
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To make a voice after noise suppression easy to hear even when a voice signal noise in which noise is large and the signal-to-noise ratio of which is small is inputted.SOLUTION: A noise suppression device of the present invention comprises a steady noise estimation unit, a phase difference calculation unit, and a suppression range setting unit. The steady noise estimation unit estimates a steady noise model for an input signal to be noise-suppressed, out of a plurality of input signals derived by converting voice-collected signals collected by a plurality of microphones from a time domain into a frequency domain. The phase difference calculation unit calculates a phase difference between the plurality of input signals. The suppression range setting unit sets, on the basis of the signal-to-noise ratio of an input signal calculated using the input signal and the steady noise model, a phase difference range in which the input signal is suppressed.SELECTED DRAWING: Figure 2
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Inventors:
MATSUMOTO CHIKAKO
Application Number:
JP2015129112A
Publication Date:
January 19, 2017
Filing Date:
June 26, 2015
Export Citation:
Assignee:
FUJITSU LTD
International Classes:
G10L21/0208; G10L21/0232; H04R3/00
Domestic Patent References:
| JP2013135433A | 2013-07-08 | |||
| JPWO2010089976A1 | 2012-08-09 |
Attorney, Agent or Firm:
Yoshiyuki Osuga
virtue Tamio Ei
virtue Tamio Ei