Invention Grant
- Patent Title: Apparatus and method for audio frame loss recovery
- Patent Title (中): 音频帧丢失恢复的装置和方法
-
Application No.: US13626938Application Date: 2012-09-26
-
Publication No.: US09123328B2Publication Date: 2015-09-01
- Inventor: Udar Mittal , James P. Ashley
- Applicant: MOTOROLA MOBILITY LLC
- Applicant Address: US CA Mountain View
- Assignee: GOOGLE TECHNOLOGY HOLDINGS LLC
- Current Assignee: GOOGLE TECHNOLOGY HOLDINGS LLC
- Current Assignee Address: US CA Mountain View
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Main IPC: G10L19/00
- IPC: G10L19/00 ; G10L21/00 ; G10L19/005 ; G10L19/18

Abstract:
A method and apparatus provides for frame loss recovery following a loss of a frame in an audio codec. The lost frame is identified. Estimated linear predictive coefficients of a previous transform frame are generated based on a decoded audio of the previous transform frame. An estimated residual of the previous transform frame is generated based on the estimated linear predicative coefficients and the decoded audio. A pitch delay is determined from frame error recovery parameters received with the previous transform frame. An extended residual is generated based on the pitch delay and the estimated residual. A first synthesized signal is generated based on the extended residual and the linear predicative coefficients. A decoded audio output of at least the lost frame is generated based on the first synthesized signal. The frame error recovery parameters are generated by an encoder.
Public/Granted literature
- US20140088974A1 APPARATUS AND METHOD FOR AUDIO FRAME LOSS RECOVERY Public/Granted day:2014-03-27
Information query