JPS6489898A - Sound signal existence detection device - Google Patents

Sound signal existence detection device

Info

Publication number
JPS6489898A
JPS6489898A JP62246436A JP24643687A JPS6489898A JP S6489898 A JPS6489898 A JP S6489898A JP 62246436 A JP62246436 A JP 62246436A JP 24643687 A JP24643687 A JP 24643687A JP S6489898 A JPS6489898 A JP S6489898A
Authority
JP
Japan
Prior art keywords
signal
sound
sound signal
level
detection device
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
JP62246436A
Other languages
Japanese (ja)
Other versions
JP2674035B2 (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 JP62246436A priority Critical patent/JP2674035B2/en
Publication of JPS6489898A publication Critical patent/JPS6489898A/en
Application granted granted Critical
Publication of JP2674035B2 publication Critical patent/JP2674035B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To enable a part where a sound signal exists and a part where the sound signal does not exist in a signal which an accompaniment and a sound are mixed to be detected by sampling the sound signal component of an inputted two channel signal, executing addition and subtraction processing and relative- comparing the level of the signal of two kinds. CONSTITUTION:First and second band filter means 3 and 4 for passing only the sound band signal of the inputted two channel signal, an addition means 5 adding the output signal of them and a subtraction means 6 subtracting them are provided. Besides, a level detection means 7 detecting the signal level of the output of the means 5 and 6 and an arithmetic operation means 8 detecting the existence of the sound signal in the two channel signal by arithmeticoperating the level detection result of two kinds are provided. Thus the existence of the sound signal can be detected by a cheap and simple constitution.
JP62246436A 1987-09-30 1987-09-30 Audio signal presence detector Expired - Fee Related JP2674035B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62246436A JP2674035B2 (en) 1987-09-30 1987-09-30 Audio signal presence detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62246436A JP2674035B2 (en) 1987-09-30 1987-09-30 Audio signal presence detector

Publications (2)

Publication Number Publication Date
JPS6489898A true JPS6489898A (en) 1989-04-05
JP2674035B2 JP2674035B2 (en) 1997-11-05

Family

ID=17148445

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62246436A Expired - Fee Related JP2674035B2 (en) 1987-09-30 1987-09-30 Audio signal presence detector

Country Status (1)

Country Link
JP (1) JP2674035B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012120052A (en) * 2010-12-02 2012-06-21 Fujitsu Ten Ltd Correlation reduction method, voice signal conversion device, and sound reproduction device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012120052A (en) * 2010-12-02 2012-06-21 Fujitsu Ten Ltd Correlation reduction method, voice signal conversion device, and sound reproduction device

Also Published As

Publication number Publication date
JP2674035B2 (en) 1997-11-05

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Legal Events

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