Signal processing using pilot based coding
First Claim
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1. A method for processing a signal using pilot based coding (PBC), the method comprising:
- extracting, by an audio coding apparatus, a pilot reference value and one or more pilot difference values;
obtaining one or more gain values of a current group included in a current frame using the pilot reference value and the pilot difference values, without using gain values of an other frame; and
reconstructing an audio signal using the one or more gain values of the current group,wherein;
the pilot reference value is dependent on each of the gain values of the current group and is not dependent on the gain values of the other frame,a quantity of the pilot difference values is equal to a quantity of the gain values of the current group,the pilot reference value is a single value which applies to all of the gain values of the current group,each pilot difference value corresponds to each gain value of the current group, andthe gain values of the current group are used to adjust a gain of the audio signal.
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Abstract
Data coding and entropy coding are performed with interconnection, and grouping is used to enhance coding efficiency. The present invention includes the steps of obtaining a pilot reference value corresponding to a plurality of gains and a pilot difference value corresponding to the pilot reference value; and obtaining the gain using the pilot reference value and the pilot difference value.
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Citations
20 Claims
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1. A method for processing a signal using pilot based coding (PBC), the method comprising:
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extracting, by an audio coding apparatus, a pilot reference value and one or more pilot difference values; obtaining one or more gain values of a current group included in a current frame using the pilot reference value and the pilot difference values, without using gain values of an other frame; and reconstructing an audio signal using the one or more gain values of the current group, wherein; the pilot reference value is dependent on each of the gain values of the current group and is not dependent on the gain values of the other frame, a quantity of the pilot difference values is equal to a quantity of the gain values of the current group, the pilot reference value is a single value which applies to all of the gain values of the current group, each pilot difference value corresponds to each gain value of the current group, and the gain values of the current group are used to adjust a gain of the audio signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An audio coding apparatus for processing a signal using pilot based coding (PBC), the apparatus comprising:
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an extracting part configured to extract a pilot reference value and one or more pilot difference values; an obtaining part configured to obtain one or more gain values of a current group included in a current frame usingthe pilot reference value and the pilot difference values, without using gain values of an other frame; and a reconstructing part configured to reconstruct an audio signal using the one or more gain values of the current group, wherein; the pilot reference value is dependent on each of the gain values of the current group and is not dependent on the gain values of the other frame, a quantity of the pilot difference values is equal to a quantity of the gain values of the current group, the pilot reference value is a single value which applies to all of the gain values of the current group, each pilot difference value corresponds to each gain value of the current group, and the gain values of the current group are used to adjust a gain of the audio signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A system for processing a signal using pilot based coding (PBC), the system comprising:
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an audio coding apparatus configured to; extract a pilot reference value and one or more pilot difference values; obtain one or more gain values of a current group included in a current frame using the pilot reference valueand the pilot difference values, without using gain values of an other frame; and reconstruct an audio signal using the one or more gain values of the current group, wherein; the pilot reference value is dependent on each of the gain values of the current group and is not dependent on the gain values of the other frame, a quantity of the pilot difference values is equal to a quantity of the gain values of the current group, the pilot reference value is a single value which applies to all of the gain values of the current group, each pilot difference value corresponds to each gain value of the current group, and the gain values of the current group are used to adjust a gain of the audio signal.
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Specification