Title:
INFORMATION PROCESSOR AND INFORMATION PROCESSING METHOD
Document Type and Number:
Japanese Patent JP2016224320
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an information processor capable of improving extraction accuracy of non-stationary components in noise removal operation.SOLUTION: The information processor includes: a power evaluation section 400 that identifies a test statistic which represents the presence likelihood of non-stationary components in one block based on the power of one block in a piece of time series data and the power of a block prior to the one block in the time series data; and an oblivious coefficient setting section 500 that sets an oblivious coefficient which is used for updating of a reflection coefficient in a linear prediction filter for extracting a non-stationary component from the time series data based on the test statistic.SELECTED DRAWING: Figure 6
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Inventors:
TAKASHIMA SHOICHI
Application Number:
JP2015111822A
Publication Date:
December 28, 2016
Filing Date:
June 02, 2015
Export Citation:
Assignee:
OKI ELECTRIC IND CO LTD
International Classes:
G10L21/0264; H04R3/00
Domestic Patent References:
| JP2012103024A | 2012-05-31 |
Other References:
川村 新、藤井 健作、伊藤 良生、福井 裕: "線形予測分析に基づく騒音抑圧法", 電子情報通信学会論文誌（J85-A）第4号, vol. （J85-A）第4号, JPN6018047765, 1 April 2002 (2002-04-01), JP, pages 15 - 423
Attorney, Agent or Firm:
Miaki Kametani
Tetsuo Kanamoto
Koji Hagiwara
Tetsuo Kanamoto
Koji Hagiwara