JPS54162405A - Pitch frequency extracting unit - Google Patents

Pitch frequency extracting unit

Info

Publication number
JPS54162405A
JPS54162405A JP7074178A JP7074178A JPS54162405A JP S54162405 A JPS54162405 A JP S54162405A JP 7074178 A JP7074178 A JP 7074178A JP 7074178 A JP7074178 A JP 7074178A JP S54162405 A JPS54162405 A JP S54162405A
Authority
JP
Japan
Prior art keywords
pitch frequency
outputted
reset signal
output
signals
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
JP7074178A
Other languages
Japanese (ja)
Other versions
JPS612959B2 (en
Inventor
Kazusada Yoshimoto
Tatsu Ifukube
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP7074178A priority Critical patent/JPS54162405A/en
Publication of JPS54162405A publication Critical patent/JPS54162405A/en
Publication of JPS612959B2 publication Critical patent/JPS612959B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To make it possible to extract a pitch frequency stably in a high speed in a comparatively simple unit by utilizing the output of a band pass filter group.
CONSTITUTION: After input sound signals have the high band emphasized by pre-emphasis circuit 3 after amplification, they are applied to BPF group 5 which divides the frequency range of 200Hz to 6KHz into 16 to 30 channels. Signals of each divided channel are outputted to terminal 9 as the feature quantity of the sound wave as they are, and channel outputs of frequencies higher than the pitch frequency are outputted to terminal 10. Though these output signals are supplied to peak value detection holding part 12 through adder 11, a short pulse train is outputted after a prescribed time because a reset signal is supplied previously. This output is applied to reset signal control part 13, and it is possible to extract the pitch frequency stably by mutual operations of peak value holding part 12 and reset signal control part 13.
COPYRIGHT: (C)1979,JPO&Japio
JP7074178A 1978-06-14 1978-06-14 Pitch frequency extracting unit Granted JPS54162405A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7074178A JPS54162405A (en) 1978-06-14 1978-06-14 Pitch frequency extracting unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7074178A JPS54162405A (en) 1978-06-14 1978-06-14 Pitch frequency extracting unit

Publications (2)

Publication Number Publication Date
JPS54162405A true JPS54162405A (en) 1979-12-24
JPS612959B2 JPS612959B2 (en) 1986-01-29

Family

ID=13440231

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7074178A Granted JPS54162405A (en) 1978-06-14 1978-06-14 Pitch frequency extracting unit

Country Status (1)

Country Link
JP (1) JPS54162405A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105845149A (en) * 2016-03-18 2016-08-10 上海语知义信息技术有限公司 Predominant pitch acquisition method in acoustical signal and system thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62128863U (en) * 1986-02-07 1987-08-14
JPS6440678U (en) * 1987-09-03 1989-03-10

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105845149A (en) * 2016-03-18 2016-08-10 上海语知义信息技术有限公司 Predominant pitch acquisition method in acoustical signal and system thereof
CN105845149B (en) * 2016-03-18 2019-07-09 云知声（上海）智能科技有限公司 The high acquisition methods of keynote and system in voice signal

Also Published As

Publication number Publication date
JPS612959B2 (en) 1986-01-29

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