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JPS6432300A - Pitch cycle extraction system and apparatus - Google Patents

Pitch cycle extraction system and apparatus

Info

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
Application number
JP18910787A
Other languages
Japanese (ja)
Inventor
Hitoshi Koyama
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP18910787A priority Critical patent/JPS6432300A/en
Publication of JPS6432300A publication Critical patent/JPS6432300A/en
Pending legal-status Critical Current

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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.
JP18910787A 1987-07-28 1987-07-28 Pitch cycle extraction system and apparatus Pending JPS6432300A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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