Lg Electronics Inc.

Chungbuk National University Industry-Academic Cooperation Foundation

Jongha Lim

Hyejeong Jeon

Gyuhyeok Jeong

Lagyoung Kim

Ingyu Kang

Daehwan Kim

Byungsuk Lee

Insung Lee

Kibong Hong

Sanghyeon Moon

Zhigang Piao

The present invention relates to a method for processing an audio signal, comprising: a step of performing a frequency conversion process on an audio signal to obtain a plurality of frequency transform coefficients; a step of selecting either a general mode or a non-general mode, on the basis of a pulse ratio, for the frequency transform coefficients having a high frequency band from among the plurality of frequency transform coefficients; and a step of performing, if the non-general mode is selected, the following steps: extracting a predetermined number of pulses from the frequency transform coefficients having the high frequency band, and generating pulse information; generating an original noise signal from the frequency transform coefficients having the high frequency band, excluding the pulses; generating a reference noise signal using the frequency transform coefficient having a low frequency band from among the plurality of frequency transform coefficients; and generating noise position information and noise energy information using the original noise signal and the reference noise signal.

Method and apparatus for processing an audio signal

Growing community of inventors

Chungbuk, South Korea

Jongha Lim