Method for decoding an audio signal
First Claim
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1. A method of decoding an audio signal, comprising:
- receiving a spatial information signal and a downmix signal;
extracting a number of timeslots and a number of parameter sets from the spatial information signal;
determining position information of a timeslot to which a parameter set is applied using the number of timeslots and the number of parameter sets;
generating a multi-channel audio signal by applying the spatial information signal to the downmix signal based on the position information of the timeslot; and
generating an output signal by extending a number of channels of the multi-channel audio signal based on a segmenting identifier and a non-segmenting identifier,wherein the segmenting identifier indicates that a number of channels of input signals are different from a number of channels of output signals in a signal converting unit and the non-segmenting identifier indicates that a signal is outputted intact.
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Abstract
The invention relates to a method for decoding an audio signal, to allow an audio signal to be compressed and transferred more efficiently. The inventive method comprises steps of receiving an audio signal with spatial information signal, obtaining location information using the number of time slot and parameter of audio signal, establishing a multi-channel audio signal by applying spatial information signal to down-mix signal, and performing a multi-channel array for a multi-channel audio signal in response to the output channel.
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Citations
16 Claims
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1. A method of decoding an audio signal, comprising:
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receiving a spatial information signal and a downmix signal; extracting a number of timeslots and a number of parameter sets from the spatial information signal; determining position information of a timeslot to which a parameter set is applied using the number of timeslots and the number of parameter sets; generating a multi-channel audio signal by applying the spatial information signal to the downmix signal based on the position information of the timeslot; and generating an output signal by extending a number of channels of the multi-channel audio signal based on a segmenting identifier and a non-segmenting identifier, wherein the segmenting identifier indicates that a number of channels of input signals are different from a number of channels of output signals in a signal converting unit and the non-segmenting identifier indicates that a signal is outputted intact. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for decoding an audio signal, comprising:
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a receiving part receiving a spatial information signal and a downmix signal; a spatial information decoding unit extracting a number of timeslots and a number of parameter sets from the spatial information signal; a multi-channel generating unit determining position information of a timeslot to which a parameter set is applied by using the number of timeslots and the number of parameter sets, and generating a multi-channel audio signal by applying the spatial information signal to the downmix signal based on the position information of the timeslot; and
,a signal arranging unit generating an output signal by extending a number of channels of the multi-channel audio signal based on a segmenting identifier and a non-segmenting identifier, wherein the segmenting identifier indicates that a number of channels of input signals are different from a number of channels of output signals in a signal converting unit and the non-segmenting identifier indicates that a signal is outputted intact. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification