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Shizuoka, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Multi-channel echo cancel method, multi-channel sound transfer meth...
Patent number
7,925,006
Issue date
Apr 12, 2011
Yamaha Corporation
Toru Hirai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multi-channel echo cancel method, multi-channel sound transfer meth...
Patent number
7,925,008
Issue date
Apr 12, 2011
Yamaha Corporation
Toru Hirai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Current noise spectrum estimation method and apparatus with correla...
Patent number
7,596,495
Issue date
Sep 29, 2009
Yamaha Corporation
Michiko Kazama
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Multi-channel echo cancel method, multi-channel sound transfer meth...
Patent number
7,403,609
Issue date
Jul 22, 2008
Yamaha Corporation
Toru Hirai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Picked-up-sound recording method and apparatus
Patent number
7,130,428
Issue date
Oct 31, 2006
Yamaha Corporation
Toru Hirai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Impulse response setting method for the 2-channel echo canceling fi...
Patent number
6,950,513
Issue date
Sep 27, 2005
Yamaha Corporation
Toru Hirai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
Multi-channel echo cancel method, multi-channel sound transfer meth...
Publication number
20070258578
Publication date
Nov 8, 2007
Yamaha Corporation
Toru Hirai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Multi-channel echo cancel method, multi-channel sound transfer meth...
Publication number
20070258579
Publication date
Nov 8, 2007
Yamaha Corporation
Toru Hirai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Noise spectrum estimation method and apparatus
Publication number
20050256705
Publication date
Nov 17, 2005
Yamaha Corporation
Michiko Kazama
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Application
Method of discriminating between double-talk state and single-talk...
Publication number
20050220292
Publication date
Oct 6, 2005
Yamaha Corporation
Hiraku Okumura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Multi-channel echo cancel method, multi-channel sound transfer meth...
Publication number
20040174991
Publication date
Sep 9, 2004
Yamaha Corporation
Toru Hirai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Impulse response setting method for the 2-channel echo canceling fi...
Publication number
20030021389
Publication date
Jan 30, 2003
Toru Hirai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Picked-up-sound reproducing method and apparatus
Publication number
20020159603
Publication date
Oct 31, 2002
Toru Hirai
H04 - ELECTRIC COMMUNICATION TECHNIQUE