JPS6432300A - Pitch cycle extraction system and apparatus - Google Patents
Pitch cycle extraction system and apparatusInfo
- Publication number
- JPS6432300A JPS6432300A JP18910787A JP18910787A JPS6432300A JP S6432300 A JPS6432300 A JP S6432300A JP 18910787 A JP18910787 A JP 18910787A JP 18910787 A JP18910787 A JP 18910787A JP S6432300 A JPS6432300 A JP S6432300A
- Authority
- JP
- Japan
- Prior art keywords
- maximum
- minimum point
- inputted
- correlation
- cross
- 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.)
- Pending
Links
- 238000000605 extraction Methods 0.000 title 1
- 238000005314 correlation function Methods 0.000 abstract 2
- 238000004364 calculation method Methods 0.000 abstract 1
Landscapes
- Complex Calculations (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
PURPOSE: To simplify the structure of a pitch cycle extracting device and to extract a high precision pitch by arranging a cross-correlation unit as the pitch extracting means for the device. CONSTITUTION: The discrete-time signal series of an input terminal 1 is inputted in a cross-correlation unit 20, and the fixed series, which is used for the calculation of cross-correlation function from a fixed signal generating unit 10, is inputted in the correlation unit 20. With this correlation unit 20, a correlation function is determined from the signal series and the fixed series, and inputted in a maximum/minimum point detector 30 and a delay 40. The first maximum or the minimum point is detected by this detector 30, delaying the cross- correlation signal column by the delay 40, generating a difference in predetermined time interval, and detecting the second maximum or the minimum point by a maximum/minimum point detector 31. Then, with an output from the detectors 30, 31 inputted in a pitch deciding circuit 50, a time relation between the first and the second maximum points or the minimum points is determined, as is a time relation between the first maximum point and the second minimum point or between the first minimum point and the second maximum point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18910787A JPS6432300A (en) | 1987-07-28 | 1987-07-28 | Pitch cycle extraction system and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18910787A JPS6432300A (en) | 1987-07-28 | 1987-07-28 | Pitch cycle extraction system and apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6432300A true JPS6432300A (en) | 1989-02-02 |
Family
ID=16235484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18910787A Pending JPS6432300A (en) | 1987-07-28 | 1987-07-28 | Pitch cycle extraction system and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6432300A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009031452A (en) * | 2007-07-25 | 2009-02-12 | Sony Corp | Voice analysis device, voice analysis method, and computer program |
-
1987
- 1987-07-28 JP JP18910787A patent/JPS6432300A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009031452A (en) * | 2007-07-25 | 2009-02-12 | Sony Corp | Voice analysis device, voice analysis method, and computer program |
| US8165873B2 (en) | 2007-07-25 | 2012-04-24 | Sony Corporation | Speech analysis apparatus, speech analysis method and computer program |
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