Title:
SOUND SIGNAL ENHANCEMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/141317
Kind Code:
A1
Abstract:
In the present invention, a first signal weighting unit (2) outputs a signal obtained by weighting a target signal or noise feature, from an input signal in which the target signal and noise are mixed together. A neural network arithmetic operation unit (4) uses a coupling coefficient to output an enhanced signal of the target signal. A reverse filtering unit (6) outputs a signal obtained by cancelling out the weighting of the target signal or noise feature, from the enhanced signal. A second signal weighting unit (9) outputs a signal obtained by weighting the target signal or noise feature, in respect to a teacher signal. An error evaluation unit (11) outputs a coupling coefficient so as to cause a learning error between the signal weighted by the second signal weighting unit (9) and the output signal of the neural network arithmetic operation unit (4) to become a value not greater than a set value.
Inventors:
FURUTA SATORU (JP)
Application Number:
PCT/JP2016/054297
Publication Date:
August 24, 2017
Filing Date:
February 15, 2016
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G10L21/0264
Foreign References:
| JPH0566795A | 1993-03-19 | |||
| JP2011530091A | 2011-12-15 |
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (JP)
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