Method and apparatus for parametric encoding and parametric decoding
AssigneeSamsung Electronics Co., Ltd.
InventorsJae-one OH, Geon-hyoung LEE, Chul-woo LEE, Jong-hoon JEONG, Nam-suk LEE
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Abstract
A method of and apparatus for parametric encoding and parametric decoding are provided. According to the method and apparatus, not all parameters for all component signals are generated and according to a time interval, parameters for some component signals are replaced by index information allowing similar previous time intervals to be found, thereby increasing encoding efficiency.
Claims26
A parametric encoding method comprising:
- detecting a second transient signal similar to a first transient signal from among a plurality of transient signals occurring before the first transient signal;
- detecting a second time interval in which a second component signal similar to a first component signal of a first time interval after the occurrence of the first transient signal exists, from among a plurality of time intervals after the occurrence of the second transient signal;
- and
- encoding the first component signal of the first time interval by using information on the second time interval.
A computer readable recording medium having embodied thereon a computer program for executing a parametric encoding method comprising:
- detecting a second transient signal similar to a first transient signal from among a plurality of transient signals occurring before the first transient signal;
- detecting a second time interval in which a second component signal similar to a first component signal of a first time interval after the occurrence of the first transient signal exists, from among a plurality of time intervals after the occurrence of the second transient signal;
- and
- encoding the first component signal of the first time interval by using information on the second time interval.
A parametric encoding apparatus comprising:
- a transient signal detection unit that detects a second transient signal similar to a first transient signal from among a plurality of transient signals occurring before the first transient signal;
- a time interval detection unit that detects a second time interval in which a second component signal similar to a first component signal of a first time interval after the occurrence of the first transient signal exists, from among a plurality of time intervals after the occurrence of the second transient signal;
- and
- an encoding unit that encodes the first component signal of the first time interval by using information on the second time interval.
A parametric decoding method comprising:
- determining whether a parameter for a first component signal of a first time interval to be decoded is prediction information that has a format indicating at least one time interval;
- and
- restoring the first component signal of the first time interval to be decoded, by selectively using the parameter for at least a second time interval of a plurality of time intervals occurring before the first time interval to be decoded, according to a result of the determining.
A computer readable recording medium having embodied thereon a computer program for executing a parametric decoding method comprising:
- determining whether a parameter for a first component signal of a first time interval to be decoded is prediction information that has a format indicating at least one time interval;
- and
- restoring the first component signal of the first time interval to be decoded, by selectively using the parameter for at least a second time interval of a plurality of time intervals occurring before the first time interval to be decoded, according to a result of the determining.
A parametric decoding apparatus comprising:
- a determination unit that determines whether a parameter for a first component signal of a first time interval to be decoded is prediction information that has a format indicating at least one time interval;
- and
- a restoration unit that restores the first component signal of the first time interval to be decoded, by selectively using the parameter for at least a second time interval of a plurality of time intervals occurring before the first time interval to be decoded, according to a result of the determination.
Dependencies are inferred from the claim text.