Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor
First Claim
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1. A method for processing a signal using pilot based coding (PBC), the method comprising:
- obtaining, by an audio coding apparatus, channel grouping information identifying a group of low frequency parameters bands to apply to a low frequency channel when a low frequency channel (LFE) mode is specified;
obtaining a pilot reference value and one or more pilot difference values associated with the identified group of low frequency parameter bands; and
obtaining data elements of the identified group of low frequency parameter bands using the pilot reference value and the one or more pilot difference values,wherein;
the pilot reference value is dependent on the data elements of the identified group of low frequency parameter bands included in a current frame, and is not dependent on data elements of an other frame,a quantity of the pilot difference values is equal to a quantity of the data elements of the identified group of low frequency parameter bands,the pilot reference value is a single value which applies to all of the data elements of the identified group of low frequency parameter bands, andeach pilot difference value corresponds to each data element of the identified group of low frequency parameter bands.
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Abstract
An apparatus for processing a signal and method thereof are disclosed. 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 group reference value corresponding to a plurality of data included in one group through grouping including first grouping and second grouping and a first difference value corresponding to the group reference value and obtaining the data using the group reference value and the first difference value.
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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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obtaining, by an audio coding apparatus, channel grouping information identifying a group of low frequency parameters bands to apply to a low frequency channel when a low frequency channel (LFE) mode is specified; obtaining a pilot reference value and one or more pilot difference values associated with the identified group of low frequency parameter bands; and obtaining data elements of the identified group of low frequency parameter bands using the pilot reference value and the one or more pilot difference values, wherein; the pilot reference value is dependent on the data elements of the identified group of low frequency parameter bands included in a current frame, and is not dependent on data elements of an other frame, a quantity of the pilot difference values is equal to a quantity of the data elements of the identified group of low frequency parameter bands, the pilot reference value is a single value which applies to all of the data elements of the identified group of low frequency parameter bands, and each pilot difference value corresponds to each data element of the identified group of low frequency parameter bands. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An audio coding apparatus for processing a signal, the apparatus comprising:
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an obtaining part configured to; obtain channel grouping information identifying a group of low frequency parameters bands to apply to a low frequency channel when a low frequency channel (LFE) mode is specified, obtain a pilot reference value and one or more pilot difference values associated with the identified group of low frequency parameter bands, and obtain data elements of the identified group of low frequency parameter bands using the pilot reference value and the one or more pilot difference values, wherein; the pilot reference value is dependent on the data elements of the identified group of low frequency parameter bands included in a current frame, and is not dependent on data elements of an other frame, a quantity of the pilot difference values is equal to a quantity of the data elements of the identified group of low frequency parameter bands, the pilot reference value is a single value which applies to all of the data elements of the identified group of low frequency parameter bands, and each pilot difference value corresponds to each data element of the identified group of low frequency parameter bands. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A system for processing a signal, the system comprising:
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an audio coding apparatus configured to; obtain channel grouping information identifying a group of low frequency parameters bands to apply to a low frequency channel when a low frequency channel (LFE) mode is specified, obtain a pilot reference value and one or more pilot difference values associated with the identified group of low frequency parameter bands, and obtain data elements of the identified group of low frequency parameter bands using the pilot reference value and the one or more pilot difference values, wherein; the pilot reference value is dependent on the data elements of the identified group of low frequency parameter bands included in a current frame, and is not dependent on data elements of an other frame, a quantity of the pilot difference values is equal to a quantity of the data elements of the identified group of low frequency parameter bands, the pilot reference value is a single value which applies to all of the data elements of the identified group of low frequency parameter bands, and each pilot difference value corresponds to a single data element of the identified group of low frequency parameter bands. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification