Method and apparatus for signal processing and encoding and decoding
First Claim
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1. A method for processing a signal, comprising:
- obtaining, by an audio coding apparatus, a parameter;
entropy-decoding, by an audio coding apparatus, the parameter according to a particular entropy coding scheme from among multiple entropy coding schemes including at least one of a one-dimensional scheme and a two-dimensional scheme, the two-dimensional scheme including at least one of a time grouping scheme and a frequency grouping scheme; and
data-decoding, by an audio coding apparatus, the entropy-decoded parameter according to a particular data coding scheme from among multiple data coding schemes including at least one of a pilot coding scheme, a time difference scheme and a frequency difference scheme,wherein;
the time grouping scheme is used to entropy-encode or entropy-decode data based on time pairing of time direction,the frequency grouping scheme is used to entropy-encode or entropy-decode data based on frequency pairing of frequency direction,the pilot coding scheme is used to data-encode or data-decode data elements of a current group included in a current frame using a pilot reference value and one or more pilot difference values,the pilot reference value is dependent on each of the data elements of the current group, and is not dependent on the data elements of the other frame,a quantity of the pilot difference values is equal to a quantity of the data elements of the current group,the pilot reference value is a single value which applies to all of the data elements of the current group,each pilot difference value corresponds to each data element of the current group,the time difference scheme is used to data-encode or data-decode data elements using a time reference value and a time difference value which are calculated in a time axis, andthe frequency difference scheme is used to data-encode or data-decode data elements using a frequency reference value and a frequency difference value which are calculated in a frequency axis,a quantity of the time reference values or the frequency reference values is less than a quantity of the data elements, andeach time reference value or each frequency reference value corresponds to each data element.
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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 difference information and entropy-decoding the difference information according to an entropy coding scheme including time grouping and frequency grouping and data-decoding the difference information according to a data decoding scheme including a pilot difference, a time difference and a frequency difference.
92 Citations
21 Claims
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1. A method for processing a signal, comprising:
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obtaining, by an audio coding apparatus, a parameter; entropy-decoding, by an audio coding apparatus, the parameter according to a particular entropy coding scheme from among multiple entropy coding schemes including at least one of a one-dimensional scheme and a two-dimensional scheme, the two-dimensional scheme including at least one of a time grouping scheme and a frequency grouping scheme; and data-decoding, by an audio coding apparatus, the entropy-decoded parameter according to a particular data coding scheme from among multiple data coding schemes including at least one of a pilot coding scheme, a time difference scheme and a frequency difference scheme, wherein; the time grouping scheme is used to entropy-encode or entropy-decode data based on time pairing of time direction, the frequency grouping scheme is used to entropy-encode or entropy-decode data based on frequency pairing of frequency direction, the pilot coding scheme is used to data-encode or data-decode data elements of a current group included in a current frame using a pilot reference value and one or more pilot difference values, the pilot reference value is dependent on each of the data elements of the current group, and is not dependent on the data elements of the other frame, a quantity of the pilot difference values is equal to a quantity of the data elements of the current group, the pilot reference value is a single value which applies to all of the data elements of the current group, each pilot difference value corresponds to each data element of the current group, the time difference scheme is used to data-encode or data-decode data elements using a time reference value and a time difference value which are calculated in a time axis, and the frequency difference scheme is used to data-encode or data-decode data elements using a frequency reference value and a frequency difference value which are calculated in a frequency axis, a quantity of the time reference values or the frequency reference values is less than a quantity of the data elements, and each time reference value or each frequency reference value corresponds to each data element. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for processing a signal, comprising:
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obtaining a parameter; entropy-decoding the parameter according to a particular entropy coding scheme from among a plurality of entropy coding schemes including a one-dimensional entropy coding scheme; and data-decoding the parameter according to a particular data coding scheme from among a plurality of data coding schemes including a pilot coding scheme, wherein, when the particular data coding scheme corresponds to the pilot coding scheme, and the parameter corresponds to a pilot reference value, the particular entropy coding scheme corresponds to the one-dimensional entropy coding scheme. - View Dependent Claims (8, 9, 10)
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11. A method for processing a signal, comprising:
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data-encoding, by an audio coding apparatus, a parameter by a particular data coding scheme from among a plurality of data coding schemes including a pilot coding scheme; entropy-encoding, an audio coding apparatus, the data-encoded parameter by a particular entropy coding scheme from among a plurality of entropy coding schemes including one-dimensional entropy coding scheme; and transferring, by an audio coding apparatus, the entropy-encoded parameter to a decoder, wherein the entropy coding scheme is determined according to the data coding scheme, wherein, when the particular data coding scheme corresponds to the pilot coding scheme, and the parameter corresponds to a pilot reference value, the particular entropy coding scheme corresponds to the one-dimensional entropy coding scheme.
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12. An apparatus for processing a signal, comprising:
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a data encoding part encoding a parameter by a particular data coding scheme from among a plurality of data coding schemes including a pilot coding scheme; an entropy encoding part entropy-encoding the data-encoded parameter by a particular entropy coding scheme from among a plurality of entropy coding schemes including one-dimensional entropy coding scheme; and an outputting part transferring the entropy-encoded difference information to a decoder, wherein, when the particular data coding scheme corresponds to the pilot coding scheme, and the parameter corresponds to a pilot reference value, the particular entropy coding scheme corresponds to the one-dimensional entropy coding scheme.
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13. An apparatus for processing a signal, comprising:
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an information obtaining part obtaining a parameter; an entropy decoding part entropy-decoding the parameter according to a particular entropy coding scheme from among multiple entropy coding schemes including at least one of time grouping scheme and frequency grouping scheme; and a data decoding part data-decoding the entropy-decoded parameter according to a particular data coding scheme from among multiple data coding schemes including at least one of a pilot coding scheme, a time difference scheme and a frequency difference scheme, wherein; the time grouping scheme is used to entropy-encode or entropy-decode data based on time pairing of time direction, the frequency grouping scheme is used to entropy-encode or entropy-decode data based on frequency pairing of frequency direction, the pilot coding scheme is used to data-encode or data-decode data elements of a current group included in a current frame using a pilot reference value and one or more pilot difference values, the pilot reference value is dependent on each of the data elements of the current group, and is not dependent on the data elements of the other frame, a quantity of the pilot difference values is equal to a quantity of the data elements of the current group, the pilot reference value is a single value which applies to all of the data elements of the current group, each pilot difference value corresponds to each data element of the current group, the time difference scheme is used to data-encode or data-decode data elements using a time reference value and a time difference value which are calculated in a time axis, and, the frequency difference scheme is used to data-encode or data-decode data elements using a frequency reference value and a frequency difference value which are calculated in a frequency axis, a quantity of the time reference values or the frequency reference values is less than a quantity of the data elements, and each time reference value or each frequency reference value corresponds to each data element. - View Dependent Claims (14, 15, 16, 17, 18)
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19. An apparatus for processing a signal, comprising:
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a signal obtaining part obtaining a parameter; an entropy decoding part entropy-decoding the parameter according to a particular entropy coding scheme from among a plurality of entropy coding schemes including one-dimensional entropy coding scheme; and a data decoding part data-decoding the parameter according to a particular data coding scheme from among a plurality of data coding schemes including a pilot coding scheme, wherein, when the particular data coding scheme corresponds to the pilot coding scheme, and the parameter corresponds to a pilot reference value, the particular entropy coding scheme corresponds to the one-dimensional entropy coding scheme. - View Dependent Claims (20, 21)
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Specification