Title:
テレビ・オーディオ信号処理用の構成可能再帰デジタル・フィルタ
Document Type and Number:
Japanese Patent JP4970259
Kind Code:
B2
Abstract:
A television audio signal encoder includes a device that sums a left channel audio signal and a right channel audio signal to produce a sum signal. The device also subtracts one of the left and right audio signals from the other to produce a difference signal. The encoder also includes a configurable infinite impulse response digital filter that selectively uses one or more sets of filter coefficients to filter the difference signal. The set of filter coefficients is applied to the difference signal by a single multiplier in a recursive manner to prepare the difference signal for transmission.
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Inventors:
Matthew Barnhill
Application Number:
JP2007527943A
Publication Date:
July 04, 2012
Filing Date:
August 16, 2005
Export Citation:
Assignee:
That Corporation
International Classes:
H04H20/88; H04R3/02; H04R3/00
Domestic Patent References:
| JP2000513888A | ||||
| JP6209234A | ||||
| JP2000138547A | ||||
| JP6216805A | ||||
| JP11004461A | ||||
| JP3502027A | ||||
| JP63094715A |
Attorney, Agent or Firm:
Okabe
Masao Okabe
Nobuaki Kato
Shinichi Usui
Takao Ochi
Asahi Shinmitsu
Katsumi Miyama
Masao Okabe
Nobuaki Kato
Shinichi Usui
Takao Ochi
Asahi Shinmitsu
Katsumi Miyama