Method and Apparatus for Signal Processing and Encoding and Decoding Method, and Apparatus Therefor

An apparatus for processing a signal, comprising:

• a value obtaining part configurable for obtaining a group reference value corresponding to data included in a group and a difference value corresponding to the group reference value through first grouping and internal grouping for the first grouping, wherein the group reference value and the difference value are obtained from the signal;
• and
• a data obtaining part configurable for obtaining the data using the group reference value and the difference value.

A method of processing a signal, comprising the steps of:

• generating a difference value using a group reference value corresponding to data included in a group through first grouping and internal grouping for the first grouping and the data, wherein the group reference value is obtained from the signal;
• and
• transferring the generated difference value.

An apparatus for processing a signal, comprising:

• a value generating part configurable for generating a difference value using a group reference value corresponding to data included in a group through first grouping and internal grouping for the first grouping and the data, wherein the group reference value is obtained from the signal;
• and
• an outputting part configurable for transferring the generated difference value.