Enhanced error concealment for spatial audio
First Claim
1. An error concealment method for multi-channel digital audio, the method comprising the steps of receiving an audio signal having audio data forming a first audio channel and a second audio channel included therein, said first and second audio channels being correlated with each other in a manner so that a spatial sensation is typically perceived when listened to by a user;
- detecting erroneous first-channel data in the first audio channel;
obtaining second-channel data from the second audio channel;
determining, upon detection of the erroneous first-channel data, a spatially perceivable inter-channel relation between the first and second audio channels; and
correcting the erroneous first-channel data of the first audio channel by using the second-channel data and the determined inter-channel relation so as to preserve the spatial sensation perceived by the user.
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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.
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Citations
35 Claims
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1. An error concealment method for multi-channel digital audio, the method comprising the steps of receiving an audio signal having audio data forming a first audio channel and a second audio channel included therein, said first and second audio channels being correlated with each other in a manner so that a spatial sensation is typically perceived when listened to by a user;
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detecting erroneous first-channel data in the first audio channel;
obtaining second-channel data from the second audio channel;
determining, upon detection of the erroneous first-channel data, a spatially perceivable inter-channel relation between the first and second audio channels; and
correcting the erroneous first-channel data of the first audio channel by using the second-channel data and the determined inter-channel relation so as to preserve the spatial sensation perceived by the user. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 28, 30, 31, 34)
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27. A receiver of multi-channel digital audio, comprising means for receiving an audio signal having audio data forming a first audio channel and a second audio channel included therein, said first and second audio channels being correlated with each other in a manner so that a spatial sensation is typically perceived when listened to by a user;
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means for detecting erroneous first-channel data in the first audio channel;
means for obtaining second-channel data from the second audio channel;
means for correcting the erroneous first-channel data of the first audio channel by using the second-channel data; and
means for determining, upon detection of the erroneous first-channel data, a spatially perceivable inter-channel relation between the first and second audio channels, wherein said means for correcting the erroneous first-channel data of the first audio channel is adapted to use the determined inter-channel relation when correcting the erroneous first-channel data so as to preserve the spatial sensation perceived by the user. - View Dependent Claims (29, 32, 33, 35)
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Specification