The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 30, 2012
Filed:
Jun. 28, 2006
Yasuo Yoshioka, Hamamatsu, JP;
Yasuo Yoshioka, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu-shi, JP;
Abstract
Even in a state that the change of an environmental noise cannot be anticipated, a sound generating period in an audio signal can be specified with high accuracy. Sound in an audio space in which an audio signal processing systemis disposed is always collected by a microphoneand inputted to an audio signal processing deviceas an audio signal. Before a user carried out a prescribed operation, the audio signals inputted from the microphoneare sequentially stored in a first buffer. After the prescribed operation is carried out, the audio signals are sequentially stored in a second buffer. A specifying partconsiders the level of the audio signal stored in the first bufferas the level of the environmental noise and the level of the audio signal sequentially stored in the second bufferas the level of sound generated at a current time to calculate an S/N ratio. The specifying partsequentially decides whether or not the calculated S/N ratio satisfies a prescribed condition to specify the sound generating period in the audio signal.