JPS6489898A - Sound signal existence detection device - Google Patents
Sound signal existence detection deviceInfo
- 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
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.
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)
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 |
-
1987
- 1987-09-30 JP JP62246436A patent/JP2674035B2/en not_active Expired - Fee Related
Cited By (1)
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 |