Patent application number | Description | Published |
20120245930 | METHOD AND APPARATUS FOR ENCODING A SPEECH SIGNAL - 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. | 09-27-2012 |
20130060365 | METHOD AND APPARATUS FOR PROCESSING AN AUDIO SIGNAL - 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. | 03-07-2013 |
20130232717 | ROBOT CLEANER AND METHOD FOR CONTROLLING THE SAME - Disclosed are a robot cleaner, and a method for controlling the same. | 09-12-2013 |
20140236581 | VOICE SIGNAL ENCODING METHOD, VOICE SIGNAL DECODING METHOD, AND APPARATUS USING SAME - The present invention relates to a method and apparatus for processing a voice signal, and the voice signal encoding method according to the present invention comprises the steps of: generating transform coefficients of sine wave components forming an input voice signal by transforming the sine wave components; determining transform coefficients to be encoded from the generated transform coefficients; and transmitting indication information indicating the determined transform coefficients, wherein the indication information may include position information, magnitude information, and sign information of the transform coefficients. | 08-21-2014 |
20140303965 | METHOD FOR ENCODING VOICE SIGNAL, METHOD FOR DECODING VOICE SIGNAL, AND APPARATUS USING SAME - The present invention relates to a method for encoding a voice signal, a method for decoding a voice signal, and an | 10-09-2014 |
20140303967 | METHOD AND DEVICE FOR QUANTIZING VOICE SIGNALS IN A BAND-SELECTIVE MANNER - The present invention relates to a method and device for quantizing voice signals in a band-selective manner. A voice decoding method may include inversely quantizing voice parameter information produced from a selectively quantized voice band and performing inverse transform on the basis of the inversely quantized voice parameter information. Thus, according to the present invention, coding/decoding efficiency in voice coding/decoding may be increased by selectively coding/decoding important information. | 10-09-2014 |
20140310008 | METHOD OF MANAGING A JITTER BUFFER, AND JITTER BUFFER USING SAME - The present invention relates to a method of managing a jitter buffer and a jitter buffer using same. The method of managing a jitter buffer includes the steps of: receiving audio information frames; and adjusting a jitter buffer on the basis of the received audio information frames, wherein the adjusting step of the jitter buffer includes compensation of an audio signal, and the compensation of the audio signal can be performed for each sub frame of the audio information frames. | 10-16-2014 |
20150255074 | Frame Loss Recovering Method, And Audio Decoding Method And Device Using Same - The present invention relates to a frame loss recovering method, an audio decoding method, and an apparatus using the method. A method of recovering a frame loss of an audio signal according to the present invention includes: grouping transform coefficients of at least one frame into a predetermined number of bands among previous frames of a current frame; deriving an attenuation constant according to a tonality of the bands; and recovering transform coefficients of the current frame by applying the attenuation constant to the previous frame of the current frame. | 09-10-2015 |