Invention Grant
US09269372B2 Adaptive transition frequency between noise fill and bandwidth extension
有权
噪声填充与带宽扩展之间的自适应转换频率
- Patent Title: Adaptive transition frequency between noise fill and bandwidth extension
- Patent Title (中): 噪声填充与带宽扩展之间的自适应转换频率
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Application No.: US12674341Application Date: 2008-08-26
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Publication No.: US09269372B2Publication Date: 2016-02-23
- Inventor: Gustaf Ullberg , Anisse Taleb , Manuel Briand
- Applicant: Gustaf Ullberg , Anisse Taleb , Manuel Briand
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget L M Ericsson (publ)
- Current Assignee: Telefonaktiebolaget L M Ericsson (publ)
- Current Assignee Address: SE Stockholm
- Agency: Rothwell, Figg, Ernst & Manbeck, P.C.
- International Application: PCT/SE2008/050969 WO 20080826
- International Announcement: WO2009/029037 WO 20090305
- Main IPC: G10L19/02
- IPC: G10L19/02 ; G10L19/005 ; G10L19/028 ; G10L21/038 ; G10L19/035
Abstract:
A method for spectrum recovery in spectral decoding of an audio signal, comprises obtaining (210) of an initial set of spectral coefficients representing the audio signal, and determining (212) a transition frequency. The transition frequency is adapted to a spectral content of the audio signal. Spectral holes in the initial set of spectral coefficients below the transition frequency are noise filled (214) and the initial set of spectral coefficients are bandwidth extended (216) above the transition frequency. Decoders and encoders being arranged for performing part of or the entire method are also illustrated.
Public/Granted literature
- US20110264454A1 Adaptive Transition Frequency Between Noise Fill and Bandwidth Extension Public/Granted day:2011-10-27
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