SIGNAL ENCODING METHOD AND APPARATUS AND SIGNAL DECODING METHOD AND APPARATUS
First Claim
Patent Images
1. A spectrum coding method comprising:
- quantizing spectral data of a current band based on a first quantization scheme;
generating a lower bit of the current band using the spectral data and the quantized spectral data;
quantizing a sequence of lower bits including the lower bit of the current band based on a second quantization scheme; and
generating a bitstream based on a upper bit excluding N bits, where N is 1 or greater, from the quantized spectral data and the quantized sequence of lower bits.
1 Assignment
0 Petitions
Accused Products
Abstract
A spectrum coding method includes quantizing spectral data of a current band based on a first quantization scheme, generating a lower bit of the current band using the spectral data and the quantized spectral data, quantizing a sequence of lower bits including the lower bit of the current band based on a second quantization scheme, and generating a bitstream based on a upper bit excluding N bits, where N is 1 or greater, from the quantized spectral data and the quantized sequence of lower bits.
17 Citations
8 Claims
-
1. A spectrum coding method comprising:
-
quantizing spectral data of a current band based on a first quantization scheme; generating a lower bit of the current band using the spectral data and the quantized spectral data; quantizing a sequence of lower bits including the lower bit of the current band based on a second quantization scheme; and generating a bitstream based on a upper bit excluding N bits, where N is 1 or greater, from the quantized spectral data and the quantized sequence of lower bits. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
Specification