Invention Grant
- Patent Title: Bandwidth extension of a low band audio signal
- Patent Title (中): 低频音频信号的带宽扩展
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Application No.: US13509859Application Date: 2010-09-14
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Publication No.: US08929568B2Publication Date: 2015-01-06
- Inventor: Volodya Grancharov , Stefan Bruhn , Harald Pobloth , Sigurdur Sverrisson
- Applicant: Volodya Grancharov , Stefan Bruhn , Harald Pobloth , Sigurdur Sverrisson
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget L M Ericsson (publ)
- Current Assignee: Telefonaktiebolaget L M Ericsson (publ)
- Current Assignee Address: SE Stockholm
- Agency: Myers Bigel Sibley & Sajovec, P.A
- International Application: PCT/SE2010/050984 WO 20100914
- International Announcement: WO2011/062538 WO 20110526
- Main IPC: H03G5/00
- IPC: H03G5/00 ; G10L21/038
Abstract:
Estimation of a high band extension of a low band audio signal includes the following steps: extracting (S1) a set of features of the low band audio signal; mapping (S2) extracted features to at least one high band parameter with generalized additive modeling; frequency shifting (S3) a copy of the low band audio signal into the high band; controlling (S4) the envelope of the frequency shifted copy of the low band audio signal by said at least one high band parameter.
Public/Granted literature
- US20120230515A1 BANDWIDTH EXTENSION OF A LOW BAND AUDIO SIGNAL Public/Granted day:2012-09-13
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