JPS6413597A - Voice encoder - Google Patents

Voice encoder

Info

Publication number
JPS6413597A
JPS6413597A JP62170290A JP17029087A JPS6413597A JP S6413597 A JPS6413597 A JP S6413597A JP 62170290 A JP62170290 A JP 62170290A JP 17029087 A JP17029087 A JP 17029087A JP S6413597 A JPS6413597 A JP S6413597A
Authority
JP
Japan
Prior art keywords
pulses
amplitude
pulse
cross correlation
plural numbers
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
JP62170290A
Other languages
Japanese (ja)
Other versions
JP2969619B2 (en
Inventor
Akira Fukui
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 JP62170290A priority Critical patent/JP2969619B2/en
Publication of JPS6413597A publication Critical patent/JPS6413597A/en
Application granted granted Critical
Publication of JP2969619B2 publication Critical patent/JP2969619B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE: To improve the coding tone with a small operation quantity by adjusting an amplitude after finding pulses whose number is previously determined by a pulse amplitude adjusting means in the generating process of multipulses. CONSTITUTION: The time positions and sizes of a specified plural numbers of multipulses are determined on the basis of cross correlation found by a cross correlation arithmetic circuit 3 as a 2nd arithmetic means and autocorrelation found by an autocorrelation arithmetic circuit 4 as a 3rd arithmetic means. In this process, the time positions and sizes of the specified plural numbers of pulses are determined without correcting the pulse amplitude, and then the amplitude of the specified plural numbers of pulses is adjusted by a pulse search circuit 5 as a pulse search means according to overlaps of the positions of the pulses. Thus, the pulse amplitude is adjusted on the basis of the cross correlation left after the pulse search, so that quality of an encoding voice is increased with a small operation quantity.
JP62170290A 1987-07-08 1987-07-08 Speech coder Expired - Lifetime JP2969619B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62170290A JP2969619B2 (en) 1987-07-08 1987-07-08 Speech coder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62170290A JP2969619B2 (en) 1987-07-08 1987-07-08 Speech coder

Publications (2)

Publication Number Publication Date
JPS6413597A true JPS6413597A (en) 1989-01-18
JP2969619B2 JP2969619B2 (en) 1999-11-02

Family

ID=15902213

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62170290A Expired - Lifetime JP2969619B2 (en) 1987-07-08 1987-07-08 Speech coder

Country Status (1)

Country Link
JP (1) JP2969619B2 (en)

Also Published As

Publication number Publication date
JP2969619B2 (en) 1999-11-02

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