Signal processing apparatus and method, program, and...

Details Signal processing apparatus and method, program, and... Signal processing apparatus and method, program, and...

2007-10-16

2009-10-13

Fletcher, Marlon T (Department: 2837)

Music

Instruments

Electrical musical tone generation

C084S609000, C084S637000, C084S649000, C084S669000

Reexamination Certificate

active

07601907

ABSTRACT:
Disclosed herein is a signal processing apparatus, including: removal means for removing, from a sound signal in the form of a stereo signal, a center component which is a component of sound positioned at the center between the left and the right; extraction means for extracting, from the sound signal from which the center component is removed, first feature quantity representative of characteristics of sounds of different tones of the 12-tone equal temperament within a predetermined range; and decision means for deciding a chord within the predetermined range using the first feature quantity.

REFERENCES:
patent: 2005/0211077 (2005-09-01), Kobayashi
patent: 2008/0034947 (2008-02-01), Sumita
patent: 2008/0034948 (2008-02-01), Sumita
patent: 2008/0092722 (2008-04-01), Kobayashi
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patent: 3826660 (2006-07-01), None
patent: 2006-202235 (2006-08-01), None
patent: 2007-052394 (2007-03-01), None
Masato Sugano et al., “Chord Recognition Using Gaussian Mixture Model”, the Institute of Electronics, Information, and Communication Engineers, vol. 103, No. 147, Jun. 27, 2003, pp. 31-36.
Notification of Reasons for Refusal dated by the Japanese Patent Office on Oct. 3, 2008 in counterpart Japanese Patent Application No. 2006-286260.

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