Invention Grant
- Patent Title: Time reversed audio subframe error concealment
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Application No.: US17618676Application Date: 2020-06-04
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Publication No.: US11967327B2Publication Date: 2024-04-23
- Inventor: Erik Norvell , Chamran Moradi Ashour
- Applicant: Telefonaktiebolaget LM Ericsson (publ)
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee Address: SE Stockholm
- Agency: Sage Patent Group
- International Application: PCT/EP2020/064394 2020.06.04
- International Announcement: WO2020/249380A 2020.12.17
- Date entered country: 2021-12-13
- Main IPC: G10L19/005
- IPC: G10L19/005 ; G10L19/022 ; G10L19/06

Abstract:
A method and a decoder device of generating a concealment audio subframe of an audio signal are provided. The method comprises generating frequency spectra on a subframe basis where consecutive subframes of the audio signal have a property that an applied window shape of first subframe of the consecutive subframes is a mirrored version or a time reversed version of a second subframe of the consecutive subframes. Peaks of a signal spectrum of a previously received audio signal are detected for a concealment subframe, and a phase of each of the peaks is estimated. A time reversed phase adjustment is derived based on the estimated phase and applied to the peaks of the signal spectrum to form time reversed phase adjusted peaks.
Public/Granted literature
- US20220246156A1 TIME REVERSED AUDIO SUBFRAME ERROR CONCEALMENT Public/Granted day:2022-08-04
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