JPH04318597A - Chord decision device and automatic accompaniment device using the same - Google Patents

Chord decision device and automatic accompaniment device using the same

Info

Publication number
JPH04318597A
JPH04318597A JP3113952A JP11395291A JPH04318597A JP H04318597 A JPH04318597 A JP H04318597A JP 3113952 A JP3113952 A JP 3113952A JP 11395291 A JP11395291 A JP 11395291A JP H04318597 A JPH04318597 A JP H04318597A
Authority
JP
Japan
Prior art keywords
chord
constitution
interval
sound
acoustic signal
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
JP3113952A
Other languages
Japanese (ja)
Other versions
JP3132038B2 (en
Inventor
Kunihiro Matsubara
Tetsuya Hayashi
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.)
Casio Computer Co Ltd
Original Assignee
Casio Computer 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 Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
Priority to JP03113952A priority Critical patent/JP3132038B2/en
Publication of JPH04318597A publication Critical patent/JPH04318597A/en
Application granted granted Critical
Publication of JP3132038B2 publication Critical patent/JP3132038B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE: To accurately and speedily decide a chord from an input acoustic signal and to automatically play an accompaniment.
CONSTITUTION: The input acoustic signal is filtered digitally by a digital signal processing means 44 to detect envelope values of frequency spectra corresponding to respective intervals and an interval detecting means 44 detects an interval sound included in the acoustic signal from the detection result. An integrating means 2 integrates an envelope value of the same sound name to an interval sound whose envelope value exceeds a specific reference value among the detected interval sounds and a chord data generating means 2 compares chord constitution as the integration result with normal chord constitution stored in a chord data storage means 3. A chord data generating means 2 generates corresponding chord data when the chord constitution of the inputted interval sound is the normal chord constitution and also generates an accompaniment sound with the generated chord data.
COPYRIGHT: (C)1992,JPO&Japio
JP03113952A 1991-04-17 1991-04-17 Chord discriminating apparatus and automatic accompaniment apparatus using the same Expired - Fee Related JP3132038B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP03113952A JP3132038B2 (en) 1991-04-17 1991-04-17 Chord discriminating apparatus and automatic accompaniment apparatus using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP03113952A JP3132038B2 (en) 1991-04-17 1991-04-17 Chord discriminating apparatus and automatic accompaniment apparatus using the same

Publications (2)

Publication Number Publication Date
JPH04318597A true JPH04318597A (en) 1992-11-10
JP3132038B2 JP3132038B2 (en) 2001-02-05

Family

ID=14625323

Family Applications (1)

Application Number Title Priority Date Filing Date
JP03113952A Expired - Fee Related JP3132038B2 (en) 1991-04-17 1991-04-17 Chord discriminating apparatus and automatic accompaniment apparatus using the same

Country Status (1)

Country Link
JP (1) JP3132038B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003022096A (en) * 2001-07-10 2003-01-24 Dainippon Printing Co Ltd Encoding method for sound signal

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4214491B2 (en) * 2006-10-20 2009-01-28 ソニー株式会社 Signal processing apparatus and method, program, and recording medium
JP4315180B2 (en) * 2006-10-20 2009-08-19 ソニー株式会社 Signal processing apparatus and method, program, and recording medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003022096A (en) * 2001-07-10 2003-01-24 Dainippon Printing Co Ltd Encoding method for sound signal
JP4695781B2 (en) * 2001-07-10 2011-06-08 大日本印刷株式会社 Method for encoding an acoustic signal

Also Published As

Publication number Publication date
JP3132038B2 (en) 2001-02-05

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