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JPS6455956A - Identification equipment for call signal - Google Patents

Identification equipment for call signal

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Publication number
JPS6455956A
JPS6455956A JP62213678A JP21367887A JPS6455956A JP S6455956 A JPS6455956 A JP S6455956A JP 62213678 A JP62213678 A JP 62213678A JP 21367887 A JP21367887 A JP 21367887A JP S6455956 A JPS6455956 A JP S6455956A
Authority
JP
Japan
Prior art keywords
result
analyzed
analyzes
analysis
frequency
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
JP62213678A
Other languages
Japanese (ja)
Other versions
JP2648779B2 (en
Inventor
Takemi Hosaka
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 JP62213678A priority Critical patent/JP2648779B2/en
Publication of JPS6455956A publication Critical patent/JPS6455956A/en
Application granted granted Critical
Publication of JP2648779B2 publication Critical patent/JP2648779B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Monitoring And Testing Of Exchanges (AREA)

Abstract

PURPOSE:To obtain the identified result of high reliability in a short time by using cadence analysis and pitch analysis in terms of interpolation in a means which analyzes the frequency spectrum of the call signals, analyzes the time fluctuation quantity of the frequency spectrum and the self coefficient of correlation, analyzes the continuity of the analyzed result so as to automatically identify the kind of the signals. CONSTITUTION:The noise level of a line is estimated based on minimum electric power which can be obtained in spectrum analysis, and a ringing section is detected by comparing the level and whole electric power. As for the section where the ringing tone is detected, the characteristic of the frequency is analyzed based on the frequency of the maximum electric power and a band width, analyzes the hourly characteristic based on the time fluctuation quantity of the frequency spectrum and the distribution and the time fluctuation quantity of the self coefficient of correlation and decides the continuity of the analyzed result. With simultaneously extracting the pitch of the ringing section, the characteristic which a sound source has is analyzed and identification and decision are executed with using the result of pitch analysis and the result of above decision. The frequency of the signals is analyzed based on cadence analysis with respect to the signals which are unclearly identified due to the similarity of the characteristic, and the identified result of high reliability can be obtained.
JP62213678A 1987-08-26 1987-08-26 Call signal identification device Expired - Fee Related JP2648779B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62213678A JP2648779B2 (en) 1987-08-26 1987-08-26 Call signal identification device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62213678A JP2648779B2 (en) 1987-08-26 1987-08-26 Call signal identification device

Publications (2)

Publication Number Publication Date
JPS6455956A true JPS6455956A (en) 1989-03-02
JP2648779B2 JP2648779B2 (en) 1997-09-03

Family

ID=16643160

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62213678A Expired - Fee Related JP2648779B2 (en) 1987-08-26 1987-08-26 Call signal identification device

Country Status (1)

Country Link
JP (1) JP2648779B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03250961A (en) * 1990-02-28 1991-11-08 Mitsubishi Electric Corp Voice/data identification device
JP2008100811A (en) * 2006-10-19 2008-05-01 Fuji Xerox Co Ltd Image forming device
JP2009210836A (en) * 2008-03-04 2009-09-17 Fujitsu Ltd Voice detecting method, voice detecting device, and voice detecting program

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3109978B2 (en) 1995-04-28 2000-11-20 松下電器産業株式会社 Voice section detection device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03250961A (en) * 1990-02-28 1991-11-08 Mitsubishi Electric Corp Voice/data identification device
JP2008100811A (en) * 2006-10-19 2008-05-01 Fuji Xerox Co Ltd Image forming device
JP2009210836A (en) * 2008-03-04 2009-09-17 Fujitsu Ltd Voice detecting method, voice detecting device, and voice detecting program

Also Published As

Publication number Publication date
JP2648779B2 (en) 1997-09-03

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Legal Events

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