Lg Electronics Inc.

Chungbuk National University Industry-academic Cooperation Foundation

Yonsei University

Daehwan Kim

Hyejeong Jeon

Gyuhyeok Jeong

Lagyoung Kim

Byungsuk Lee

Ingyu Kang

Kibong Hong

Insung Lee

Jongha Lim

Sanghyeon Moon

Zhigang Piao

Changheon Lee

Changkeun Choi

Wooseong Park

Gwanggoo Kang

Taewon Jang

Minki Lee

Honggoo Kang

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

Disclosed are a mobile terminal to which a touch input is applicable, and a control method thereof. The mobile terminal includes: a terminal body; a wireless communication unit configured to receive position information on the terminal body; and a controller configured to extract one or more schedules stored in the terminal body, to acquire azimuth information on positions related to the extracted schedules based on the received position information, and to output one or more icons related to the extracted schedule(s) to an edge region of the display unit, wherein when a tilted state of the terminal body is sensed, the controller controls the one or more icons to move along the edge region of the display unit, based on azimuth information changed according to a sensed gradient.

Mobile terminal and control method for the mobile terminal

The present invention relates to a method for processing an audio signal, comprising: determining bandwidth information indicating to which of a plurality of bands the current frame corresponds; determining information on the order corresponding to the present frame on the basis of the bandwidth information; performing a linear predictive analysis of the present frame to generate a first set linear predictive transform coefficient of a first order; performing a vector quantization on the first set linear predictive coefficient to generate a first index; performing a linear predictive analysis of the current frame to generate a second set linear predictive transform coefficient of a second order in accordance with the information on the order; and performing a vector quantization on a second set difference by using the first set index and the second set linear predictive transform coefficient, when the second set linear predictive coefficient is generated.

According to the present invention, a linear prediction filter coefficient of a current frame is acquired from an input signal using linear prediction, a quantized spectrum candidate vector of the current frame, corresponding to the linear prediction filter coefficient of the current frame, is acquired on the basis of first best information, and the quantized spectrum candidate vector of the current frame and the quantized spectrum vector of the previous frame are interpolated. Accordingly, in contrast to conventional phased optimization techniques, optimum parameters which minimize quantization errors, can be obtained.

Method and apparatus for encoding a speech signal

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Seoul, South Korea

Daehwan Kim