摘要 |
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. |
申请人 |
LG ELECTRONICS INC.;CHUNGBUK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION;JEONG, GYUHYEOK;KIM, DAEHWAN;KANG, INGYU;KIM, LAGYOUNG;HONG, KIBONG;PIAO, ZHIGANG;LEE, INSUNG;LIM, JONGHA;MOON, SANGHYEON;LEE, BYUNGSUK;JEON, HYEJEONG |
发明人 |
JEONG, GYUHYEOK;KIM, DAEHWAN;KANG, INGYU;KIM, LAGYOUNG;HONG, KIBONG;PIAO, ZHIGANG;LEE, INSUNG;LIM, JONGHA;MOON, SANGHYEON;LEE, BYUNGSUK;JEON, HYEJEONG |