Title:
ENHANCED ERROR CONCEALMENT FOR SPATIAL AUDIO
Document Type and Number:
WIPO Patent Application WO2003107591
Kind Code:
A8
Abstract:
An error concealment method for multi-channel digital audio involves receiving an audio signal having audio data forming a first audio channel and a second audio channel included therein, wherein the first and second audio channels are correlated with each other in a manner so that a spatial sensation is typically perceived when listened to by a user. Erroneous first-channel data is detected in the first audio channel, and second-channel data is obtained from the second audio channel. The erroneous first-channel data of the first audio channel is corrected by using the second-channel data. Upon detection of the erroneous first-channel data, a spatially perceivable inter-channel relation between the first and second audio channels is determined, and the determined inter-channel relation is used when correcting the erroneous first-channel data of the first audio channel so as to preserve the spatial sensation perceived by the user.
Inventors:
VIROLAINEN JUSSI (FI)
LAKANIEMI ARI (FI)
LAKANIEMI ARI (FI)
Application Number:
PCT/IB2002/002193
Publication Date:
February 12, 2004
Filing Date:
June 14, 2002
Export Citation:
Assignee:
NOKIA CORP (FI)
VIROLAINEN JUSSI (FI)
LAKANIEMI ARI (FI)
VIROLAINEN JUSSI (FI)
LAKANIEMI ARI (FI)
International Classes:
G11B20/00; G11B20/10; G11B20/18; (IPC1-7): H04L1/00; H04H1/00
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