JPS6489900A - Sound signal attenuation device - Google Patents

Sound signal attenuation device

Info

Publication number
JPS6489900A
JPS6489900A JP62246442A JP24644287A JPS6489900A JP S6489900 A JPS6489900 A JP S6489900A JP 62246442 A JP62246442 A JP 62246442A JP 24644287 A JP24644287 A JP 24644287A JP S6489900 A JPS6489900 A JP S6489900A
Authority
JP
Japan
Prior art keywords
sound signal
signal
existence
delay
switching
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP62246442A
Other languages
Japanese (ja)
Other versions
JP2629739B2 (en
Inventor
Takaaki Furuta
Yaezo Shiotsuki
Kenji Otani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP62246442A priority Critical patent/JP2629739B2/en
Publication of JPS6489900A publication Critical patent/JPS6489900A/en
Application granted granted Critical
Publication of JP2629739B2 publication Critical patent/JP2629739B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To enable a sound signal to be stably attenuated by automatically detecting the existence of a sound signal in a stereo signal and switching the control response characteristic of delay time at a part where the sound signal exists or a part where the sound signal does not exist. CONSTITUTION:A sound signal existence detection means 13 detecting the existence of the sound signal of a two channel signal, a phase detection control means 7 detecting the phase aberration of the two channel signal and controlling the delay time of a second delay means 4 and a time constant switching means 12 switching time constant based on the output information of the control means 7 when the delay time of the second delay means 4 is changed are provided. By providing a subtraction means 8 arithmetic-operating the difference of the output signal between a first and the second delay means, the time constant of the switching means 12 is switched according to the existence of the sound signal in the inputted two channel signal. Thus a sound signal attenuation device with high efficiency which can stably attenuate the sound signal can be obtained.
JP62246442A 1987-09-30 1987-09-30 Audio signal attenuator Expired - Fee Related JP2629739B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62246442A JP2629739B2 (en) 1987-09-30 1987-09-30 Audio signal attenuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62246442A JP2629739B2 (en) 1987-09-30 1987-09-30 Audio signal attenuator

Publications (2)

Publication Number Publication Date
JPS6489900A true JPS6489900A (en) 1989-04-05
JP2629739B2 JP2629739B2 (en) 1997-07-16

Family

ID=17148515

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62246442A Expired - Fee Related JP2629739B2 (en) 1987-09-30 1987-09-30 Audio signal attenuator

Country Status (1)

Country Link
JP (1) JP2629739B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7894609B2 (en) 2002-07-10 2011-02-22 Trident Microsystems (Far East) Ltd. Stereo signal processing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7894609B2 (en) 2002-07-10 2011-02-22 Trident Microsystems (Far East) Ltd. Stereo signal processing apparatus

Also Published As

Publication number Publication date
JP2629739B2 (en) 1997-07-16

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees