Apparatus and Method for Encoding and Decoding Signal
First Claim
1. A decoding method, comprising:
- extracting a plurality of encoded signals and division information of the encoded signals from an input bitstream;
determining which of a plurality of decoding methods is to be used to decode each of the encoded signals;
decoding the encoded signals using the determined decoding methods; and
synthesizing the decoded signals with reference to the division information.
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Abstract
Encoding and decoding apparatuses and encoding and decoding methods are provided. The decoding method includes extracting a plurality of encoded signals and division information of the encoded signals from an input bitstream, determining which of a plurality of decoding methods is to be used to decode each of the encoded signals, decoding the encoded signals using the determined decoding methods, and synthesizing the decoded signals with reference to the division information. Accordingly, it is possible to encode signals having different characteristics at an optimum bitrate by classifying the signals into one or more classes according to the characteristics of the signals and encoding each of the signals using an encoding unit that can best serve the class where a corresponding signal belongs. In addition, it is possible to efficiently encode various signals including audio and speech signals.
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Citations
30 Claims
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1. A decoding method, comprising:
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extracting a plurality of encoded signals and division information of the encoded signals from an input bitstream; determining which of a plurality of decoding methods is to be used to decode each of the encoded signals; decoding the encoded signals using the determined decoding methods; and synthesizing the decoded signals with reference to the division information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 30)
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15. A decoding apparatus, comprising:
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a bit unpacking module which extracts a plurality of encoded signals and division information of the encoded signals from an input bitstream; a decoder determination module which determines which of a plurality of decoding units is to be used to decode each of the encoded signals; a decoding module which decodes the encoded signals using the determined decoding units; and a synthesization module which synthesizes the decoded signals with reference to the division information. - View Dependent Claims (16, 17, 18)
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19. An encoding method, comprising:
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dividing an input signal into a plurality of divided signals; classifying each of the divided signals into one class of a plurality of classes according to characteristics of the divided signals; encoding the divided signals using the determined encoding methods; and generating a bitstream based on the encoded divided signals. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. An encoding apparatus, comprising:
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a classification module which divides an input signal into a plurality of divided signals and classifies each of the divided signals into one class of a plurality of classes according to characteristics of the divided signals; an encoding module which encodes the divided signals using the determined encoding methods; and a bit packing module which generates a bitstream based on the encoded divided signals. - View Dependent Claims (27, 28, 29)
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Specification