US Patent Application 18033018. SOUND SIGNAL HIGH FREQUENCY COMPENSATION METHOD, SOUND SIGNAL POST PROCESSING METHOD, SOUND SIGNAL DECODE METHOD, APPARATUS THEREOF, PROGRAM, AND STORAGE MEDIUM simplified abstract
Contents
- 1 SOUND SIGNAL HIGH FREQUENCY COMPENSATION METHOD, SOUND SIGNAL POST PROCESSING METHOD, SOUND SIGNAL DECODE METHOD, APPARATUS THEREOF, PROGRAM, AND STORAGE MEDIUM
- 1.1 Organization Name
- 1.2 Inventor(s)
- 1.3 SOUND SIGNAL HIGH FREQUENCY COMPENSATION METHOD, SOUND SIGNAL POST PROCESSING METHOD, SOUND SIGNAL DECODE METHOD, APPARATUS THEREOF, PROGRAM, AND STORAGE MEDIUM - A simplified explanation of the abstract
- 1.4 Simplified Explanation
- 1.5 Original Abstract Submitted
SOUND SIGNAL HIGH FREQUENCY COMPENSATION METHOD, SOUND SIGNAL POST PROCESSING METHOD, SOUND SIGNAL DECODE METHOD, APPARATUS THEREOF, PROGRAM, AND STORAGE MEDIUM
Organization Name
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor(s)
SOUND SIGNAL HIGH FREQUENCY COMPENSATION METHOD, SOUND SIGNAL POST PROCESSING METHOD, SOUND SIGNAL DECODE METHOD, APPARATUS THEREOF, PROGRAM, AND STORAGE MEDIUM - A simplified explanation of the abstract
This abstract first appeared for US patent application 18033018 titled 'SOUND SIGNAL HIGH FREQUENCY COMPENSATION METHOD, SOUND SIGNAL POST PROCESSING METHOD, SOUND SIGNAL DECODE METHOD, APPARATUS THEREOF, PROGRAM, AND STORAGE MEDIUM
Simplified Explanation
The patent application describes a method for compensating high frequencies in a decoded sound signal.
- The method involves processing a stereo sound signal and decoding it into individual channel signals.
- A high-frequency compensation gain is calculated for each channel to match the high-frequency energy of the compensated decoded sound signal to the original decoded sound signal.
- The compensated decoded sound signal is obtained by adding the purified decoded sound signal and the high-frequency component multiplied by the compensation gain.
- This method aims to improve the quality of the sound signal by accurately reproducing high-frequency details.
Original Abstract Submitted
For each frame, an n-th channel compensated decoded sound signal X′is obtained that is a signal obtained by compensating a high frequency of an n-th channel purified decoded sound signal Xobtained by performing signal processing in a time domain on an n-th channel decoded sound signal {circumflex over ( )}X(n is each integer of 1 or more and N or less) that is a decoded sound signal of each channel of stereo obtained by decoding a stereo code CS. At this time, for the each frame with respect to the each channel, an n-th channel high-frequency compensation gain ρthat is a value for bringing high-frequency energy of the n-th channel compensated decoded sound signal X′close to high-frequency energy of the n-th channel decoded sound signal {circumflex over ( )}Xis obtained, and for the each frame with respect to the each channel, a signal obtained by adding the n-th channel purified decoded sound signal Xand a signal obtained by multiplying a high-frequency component of the n-th channel decoded sound signal {circumflex over ( )}Xby the n-th channel high-frequency compensation gain ρis obtained and output as the n-th channel compensated decoded sound signal.
