Encoding and decoding of overlapping audio signal values by differential encoding/decoding
First Claim
1. A method of coding an audio signal, the method comprising the steps of:
- providing a first set of audio signal values related to subsequent times in a first time interval of the audio signal;
providing a second set of audio signal values related to subsequent times in a second time interval of the audio signal;
the first time interval having an overlap with the second time interval, the overlap including at least two subsequent times of the second interval; and
wherein at least one of the audio signal values of the second set related to the at least two subsequent times in the overlap is encoded with reference to an audio signal value of the first set which is closer in time to the at least one audio signal value of the second set than any other audio signal value in the second set.
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Abstract
Coding a signal is provided, wherein a first set of values is provided related to subsequent times in a first time interval of the signal, a second set of values is provided related to subsequent times in a second time interval of the signal, the first time interval having an overlap with the second time interval, the overlap including at least two subsequent times of the second interval, wherein at least one of the values of the second set related to the at least two subsequent times in the overlap is encoded with reference to a value of the first set which is closer in time to the at least one value of the second set than any other value in the second set.
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Citations
16 Claims
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1. A method of coding an audio signal, the method comprising the steps of:
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providing a first set of audio signal values related to subsequent times in a first time interval of the audio signal; providing a second set of audio signal values related to subsequent times in a second time interval of the audio signal; the first time interval having an overlap with the second time interval, the overlap including at least two subsequent times of the second interval; and wherein at least one of the audio signal values of the second set related to the at least two subsequent times in the overlap is encoded with reference to an audio signal value of the first set which is closer in time to the at least one audio signal value of the second set than any other audio signal value in the second set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An encoder for coding an audio signal, the encoder comprising:
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means for providing a first set of audio signal values related to subsequent times in a first time interval of the audio signal; means for providing a second set of audio a signal values related to subsequent times in a second time interval of the audio signal; the first time interval having an overlap with the second time interval, the overlap including at least two subsequent times of the second interval, the device further comprising means for encoding at least one of the audio signal values of the second set related to the at least two subsequent times in the overlap with reference to an audio signal value of the first set which is closer in time to the at least one audio signal value of the second set than any other audio signal value in the second set. - View Dependent Claims (12)
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13. A storage medium having stored thereon a bit-stream representing an encoded audio a signal, the bit-stream comprising:
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a first set of encoded audio signal values related to subsequent times in a first time interval, a second set of encoded audio signal values related to subsequent times in a second time interval, the first time interval having an overlap with the second time interval, the overlap including at least two subsequent times of the second interval, wherein at least one of the audio signal values of the second set related to the at least two subsequent times in the overlap has been encoded with reference to an audio signal value of the first set which is closer in time to the at least one audio signal value of the second set than any other audio signal value in the second set.
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14. A method of decoding a bit-stream representing an encoded audio signal, the decoding method comprising the steps of:
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receiving a first set of encoded audio signal values related to subsequent times in a first time interval; receiving a second set of encoded audio signal values related to subsequent times in a second time interval; the first time interval having an overlap with the second time interval, the overlap including at least two subsequent times of the second interval, wherein at least one of the encoded audio signal values of the second set related to the at least two subsequent times in the overlap has been encoded with reference to an audio signal value of the first set which is closer in time to the at least one encoded audio signal value of the second set than any other encoded audio signal value in the second set, the decoding further comprising; decoding the first set of encoded audio signal values to obtain a first set of decoded audio signal values; and decoding the second set of encoded audio signal values to obtain a second set of decoded audio signal values, the at least one of the encoded audio signal values of the second set related to the at least two subsequent times in the overlap being decoded with reference to the encoded audio signal value of the first set which is closer in time to the at least one encoded audio signal value of the second set than any other encoded audio signal value in the second set.
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15. A decoder for decoding a bit-stream representing an encoded audio signal, the decoder comprising:
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means for receiving a first set of encoded audio signal values related to subsequent times in a first time interval, means for receiving a second set of encoded audio signal values related to subsequent times in a second time interval, the first time interval having an overlap with the second time interval, the overlap including at least two subsequent times of the second interval, wherein at least one of the encoded audio signal values of the second set related to the at least two subsequent times in the overlap has been encoded with reference to an encoded audio signal value of the first set which is closer in time to the at least one encoded audio signal value of the second set than any other encoded audio signal value in the second set, the device further comprising; means for decoding the first set of encoded audio signal values to obtain a first set of decoded audio signal values, and means for decoding the second set of encoded audio signal values to obtain a second set of decoded audio signal values, the at least one of the encoded audio signal values of the second set related to the at least two subsequent times in the overlap being decoded with reference to the encoded audio signal value of the first set which is closer in time to the at least one encoded audio signal value of the second set than any other encoded audio signal value in the second set. - View Dependent Claims (16)
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Specification