Invention Grant
US08082156B2 Audio encoding device, audio encoding method, and audio encoding program for encoding a wide-band audio signal
有权
音频编码装置，音频编码方法和用于编码宽带音频信号的音频编码程序
- Patent Title: Audio encoding device, audio encoding method, and audio encoding program for encoding a wide-band audio signal
- Patent Title (中): 音频编码装置，音频编码方法和用于编码宽带音频信号的音频编码程序
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Application No.: US11794984Application Date: 2006-01-06
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Publication No.: US08082156B2Publication Date: 2011-12-20
- Inventor: Osamu Shimada
- Applicant: Osamu Shimada
- Applicant Address: JP Tokyo
- Assignee: NEC Corporation
- Current Assignee: NEC Corporation
- Current Assignee Address: JP Tokyo
- Agency: Foley & Lardner LLP
- Priority: JP2005-003291 20050111
- International Application: PCT/JP2006/000112 WO 20060106
- International Announcement: WO2006/075563 WO 20060720
- Main IPC: G01L19/00
- IPC: G01L19/00
Abstract:
By using a high-range sub-band signal, a correction coefficient corresponding to importance of auditory sense is calculated to correct a noise level and generate additional signal information, thereby accurately reflecting the noise level of the sub-band important in the auditory sense. Thus, it is possible to calculate additional signal information reflecting the noise level of the sub-band important in the auditory sense according to importance with a small calculation amount. The calculation amount can further be reduced by using a correction coefficient based on the characteristic of an ordinary audio signal.
Public/Granted literature
- US20080140425A1 Audio Encoding Device, Audio Encoding Method, and Audio Encoding Program Public/Granted day:2008-06-12
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