Invention Grant
- Patent Title: Audio encoding device, method and program, and audio decoding device, method and program
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Application No.: US17702473Application Date: 2022-03-23
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Publication No.: US11756556B2Publication Date: 2023-09-12
- Inventor: Kimitaka Tsutsumi , Kei Kikuiri
- Applicant: NTT DOCOMO, INC.
- Applicant Address: JP Tokyo
- Assignee: NTT DOCOMO, INC.,JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
- Current Assignee: NTT DOCOMO, INC.,JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
- Current Assignee Address: JP Tokyo; US IL Chicago
- Agency: Crowell & Moring LLP
- Priority: JP 10260447 2010.11.22 JP 11033915 2011.02.18
- Main IPC: G10L19/00
- IPC: G10L19/00 ; G10L19/005 ; G10L25/21 ; G10L19/025
Abstract:
An audio packet error concealment system includes an encoding unit for encoding an audio signal consisting of a plurality of frames, and an auxiliary information encoding unit for estimating and encoding auxiliary information about a temporal change of power of the audio signal. The auxiliary information is used in packet loss concealment in decoding of the audio signal. The auxiliary information about the temporal change of power may contain a parameter that functionally approximates a plurality of powers of subframes shorter than one frame, or may contain information about a vector obtained by vector quantization of a plurality of powers of subframes shorter than one frame.
Public/Granted literature
- US20220215846A1 AUDIO ENCODING DEVICE, METHOD AND PROGRAM, AND AUDIO DECODING DEVICE, METHOD AND PROGRAM Public/Granted day:2022-07-07
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