Method and apparatus for separating a sound-source signal and method and device for detecting pitch

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EP 1 566 796 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 A2)

(48)	Corrigendum issued on:
	11.10.2006 Bulletin 2006/41

(88)	Date of publication A3:
	26.10.2005 Bulletin 2005/43

(43)	Date of publication:
	24.08.2005 Bulletin 2005/34

(21)	Application number: 05250692.0

(22)	Date of filing: 08.02.2005

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International Patent Classification (IPC):

G10L 21/02^(2000.01)

G10L 11/04^(2000.01)

(84)	Designated Contracting States:
	DE FR GB

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Priority:

20.02.2004 JP 2004045237
20.02.2004 JP 2004045238

(60)	Divisional application:
	06076567.4
	06076568.2

(71)	Applicant: SONY CORPORATION
	Tokyo (JP)

(72)	Inventors:
	Kondo, Tetsujiro Shinagawa-ku, Tokyo (JP) Arimitsu, Akihiko Shinagawa-ku, Tokyo (JP) Ichiki, Hiroshi Shinagawa-ku, Tokyo (JP) Shima, Junichi Shinagawa-ku, Tokyo (JP)

(74)	Representative: Leppard, Andrew John
	D Young & Co 120 Holborn London EC1N 2DY London EC1N 2DY (GB)

(54)	Method and apparatus for separating a sound-source signal and method and device for detecting pitch

(57) A sound-source signal separating method including steps of enhancing a target sound-source signal in an input audio signal, the input audio signal being from a mixture of acoustic signals from a plurality of sound sources and picked up by a plurality of sound pickup devices, detecting a pitch of the target sound-source signal in the input audio signal, and separating the target sound-signal from the input audio signal based on the detected pitch and the sound-source signal enhanced in the sound-source signal enhancing step.