JPH01257233A - Detecting method of signal - Google Patents

Detecting method of signal

Info

Publication number
JPH01257233A
JPH01257233A JP63084571A JP8457188A JPH01257233A JP H01257233 A JPH01257233 A JP H01257233A JP 63084571 A JP63084571 A JP 63084571A JP 8457188 A JP8457188 A JP 8457188A JP H01257233 A JPH01257233 A JP H01257233A
Authority
JP
Japan
Prior art keywords
signal
means
sampling time
outputted
value
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
JP63084571A
Inventor
Kiyoko Tamura
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP63084571A priority Critical patent/JPH01257233A/en
Publication of JPH01257233A publication Critical patent/JPH01257233A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To enable the sure detection of a signal to be detected, by a method wherein a signal containing a noise component in the signal frequency band thereof is digitized by an A/D converter circuit.
CONSTITUTION: A digital value of the signal value of an input signal at each sampling time is outputted at this time from an A/D converter circuit 2, and the digital value generated as a time series sequentially is inputted to a Fourier transform means 4. Then, each of spectral data at the sampling time is outputted sequentially from the means 4, and an added-up value of each spectral data in a predetermined frequency band out of each of the aforesaid spectral data is outputted from an addition means 6. The added-up value outputted sequentially from the means 6 at each sampling time is inputted to a moving average value generating means 8 and an average value at each sampling time is outputted sequentially from the means 8. The average value at each sampling time is used for detecting a signal containing a noise component in its signal detection frequency band.
COPYRIGHT: (C)1989,JPO&Japio
JP63084571A 1988-04-06 1988-04-06 Detecting method of signal Pending JPH01257233A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63084571A JPH01257233A (en) 1988-04-06 1988-04-06 Detecting method of signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63084571A JPH01257233A (en) 1988-04-06 1988-04-06 Detecting method of signal

Publications (1)

Publication Number Publication Date
JPH01257233A true JPH01257233A (en) 1989-10-13

Family

ID=13834356

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63084571A Pending JPH01257233A (en) 1988-04-06 1988-04-06 Detecting method of signal

Country Status (1)

Country Link
JP (1) JPH01257233A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103959031A (en) * 2011-08-08 2014-07-30 英特里斯伊斯公司 System and method for analyzing audio information to determine pitch and/or fractional chirp rate
US9142220B2 (en) 2011-03-25 2015-09-22 The Intellisis Corporation Systems and methods for reconstructing an audio signal from transformed audio information
US9183850B2 (en) 2011-08-08 2015-11-10 The Intellisis Corporation System and method for tracking sound pitch across an audio signal
US9473866B2 (en) 2011-08-08 2016-10-18 Knuedge Incorporated System and method for tracking sound pitch across an audio signal using harmonic envelope
US9485597B2 (en) 2011-08-08 2016-11-01 Knuedge Incorporated System and method of processing a sound signal including transforming the sound signal into a frequency-chirp domain

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9142220B2 (en) 2011-03-25 2015-09-22 The Intellisis Corporation Systems and methods for reconstructing an audio signal from transformed audio information
US9177561B2 (en) 2011-03-25 2015-11-03 The Intellisis Corporation Systems and methods for reconstructing an audio signal from transformed audio information
US9177560B2 (en) 2011-03-25 2015-11-03 The Intellisis Corporation Systems and methods for reconstructing an audio signal from transformed audio information
CN103959031A (en) * 2011-08-08 2014-07-30 英特里斯伊斯公司 System and method for analyzing audio information to determine pitch and/or fractional chirp rate
US9183850B2 (en) 2011-08-08 2015-11-10 The Intellisis Corporation System and method for tracking sound pitch across an audio signal
US9473866B2 (en) 2011-08-08 2016-10-18 Knuedge Incorporated System and method for tracking sound pitch across an audio signal using harmonic envelope
US9485597B2 (en) 2011-08-08 2016-11-01 Knuedge Incorporated System and method of processing a sound signal including transforming the sound signal into a frequency-chirp domain

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