公开(公告)号：US20170309287A1

公开(公告)日：2017-10-26

申请号：US15645630

申请日：2017-07-10

申请人： Electronics and Telecommunications Research Institute

发明人： Mi-Suk LEE

IPC分类号： G10L19/26 ,  G10L19/00

CPC分类号： G10L19/26 ,  G10L2019/0001

摘要： The present invention relates to a codec device and method for encoding/decoding voice and audio signals in a communication system, wherein: a fixed codebook excited signal is generated by using a pulse index for a voice signal; a first adaptive codebook excited signal is generated by using a pitch index for the voice signal; a fixed codebook signal is generated by multiplying the fixed codebook excited signal by a fixed codebook gain; a first adaptive codebook signal is generated by multiplying the first adaptive codebook excited signal by a first adaptive codebook gain; and a synthesized filter excited signal is generated by adding the fixed codebook signal and the first adaptive codebook signal.

公开(公告)号：US20140310007A1

公开(公告)日：2014-10-16

申请号：US14315964

申请日：2014-06-26

申请人： Electronics and Telecommunications Research Institute

发明人： Mi-Suk LEE ,  Hyun-Joo Bae ,  Byung-Sun Lee

IPC分类号： G10L19/008

CPC分类号： G10L19/008 ,  G10L19/0204 ,  G10L19/093 ,  G10L19/24

摘要： A method and an apparatus for encoding and decoding audio signals using adaptive sinusoidal coding are provided. The audio signal encoding method includes the steps of dividing a synthesized audio signal into a plurality of sub-bands, calculating the energy of each sub-band, selecting a predetermined number of sub-bands having a relatively large amount of energy from the sub-bands, and performing sinusoidal coding with regard to the selected sub-bands. Application of sinusoidal coding based on consideration of the amount of energy of each sub-band of the synthesized signal improves the quality of the synthesized signal more efficiently.

摘要翻译： 提供了一种使用自适应正弦编码对音频信号进行编码和解码的方法和装置。 音频信号编码方法包括以下步骤：将合成的音频信号分成多个子带，计算每个子带的能量，从子帧中选择具有相对大量能量的预定数量的子带， 并且对于所选择的子带执行正弦编码。 基于考虑合成信号的每个子带的能量量的正弦编码的应用更有效地提高了合成信号的质量。

公开(公告)号：US20140324417A1

公开(公告)日：2014-10-30

申请号：US14325475

申请日：2014-07-08

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

发明人： Mi-Suk LEE ,  Heesik YANG ,  Hyun-Woo KIM ,  Jongmo SUNG ,  Hyun-Joo BAE ,  Byung-Sun LEE

IPC分类号： G10L19/02

CPC分类号： G10L19/02 ,  G10L19/0212 ,  G10L19/24

摘要： Provided are a method and an apparatus for encoding and decoding an audio signal. A method for encoding an audio signal includes receiving a transformed audio signal, dividing the transformed audio signal into a plurality of subbands, performing a first sinusoidal pulse coding operation on the subbands, determining a performance region of a second sinusoidal pulse coding operation among the subbands on the basis of coding information of the first sinusoidal pulse coding operation, and performing the second sinusoidal pulse coding operation on the determined performance region, wherein the first sinusoidal pulse coding operation is performed variably according to the coding information. Accordingly, it is possible to further improve the quality of a synthesized signal by considering the sinusoidal pulse coding of a lower layer when encoding or decoding an audio signal in an upper layer by a layered sinusoidal pulse coding scheme.

摘要翻译： 提供了一种用于对音频信号进行编码和解码的方法和装置。 一种对音频信号进行编码的方法包括接收经变换的音频信号，将变换的音频信号分成多个子带，对子带执行第一正弦脉冲编码操作，确定子带中的第二正弦脉冲编码操作的性能区域 基于第一正弦脉冲编码操作的编码信息，并对所确定的执行区域执行第二正弦脉冲编码操作，其中根据编码信息可变地执行第一正弦脉冲编码操作。 因此，通过考虑在通过分层正弦脉冲编码方案对上层中的音频信号进行编码或解码时下层的正弦脉冲编码，可以进一步提高合成信号的质量。

公开(公告)号：US20200227061A1

公开(公告)日：2020-07-16

申请号：US16834930

申请日：2020-03-30

申请人： Electronics and Telecommunications Research Institute

发明人： Mi-Suk LEE

IPC分类号： G10L19/26

摘要： The present invention relates to a codec device and method for encoding/decoding voice and audio signals in a communication system, wherein: a fixed codebook excited signal is generated by using a pulse index for a voice signal; a first adaptive codebook excited signal is generated by using a pitch index for the voice signal; a fixed codebook signal is generated by multiplying the fixed codebook excited signal by a fixed codebook gain; a first adaptive codebook signal is generated by multiplying the first adaptive codebook excited signal by a first adaptive codebook gain; and a synthesized filter excited signal is generated by adding the fixed codebook signal and the first adaptive codebook signal.

公开(公告)号：US20190180765A1

公开(公告)日：2019-06-13

申请号：US16267062

申请日：2019-02-04

申请人： Electronics and Telecommunications Research Institute

发明人： Mi-Suk LEE

IPC分类号： G10L19/26

摘要： The present invention relates to a codec device and method for encoding/decoding voice and audio signals in a communication system, wherein: a fixed codebook excited signal is generated by using a pulse index for a voice signal; a first adaptive codebook excited signal is generated by using a pitch index for the voice signal; a fixed codebook signal is generated by multiplying the fixed codebook excited signal by a fixed codebook gain; a first adaptive codebook signal is generated by multiplying the first adaptive codebook excited signal by a first adaptive codebook gain; and a synthesized filter excited signal is generated by adding the fixed codebook signal and the first adaptive codebook signal.

公开(公告)号：US20150104039A1

公开(公告)日：2015-04-16

申请号：US14513468

申请日：2014-10-14

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

发明人： Mi-Suk LEE

IPC分类号： H04R3/00 ,  G10L21/0208

CPC分类号： G10L21/0208 ,  H04R3/02 ,  H04R27/00

摘要： Disclosed herein is an apparatus of suppressing howling, including: a microphone sensing a voice of a user to generate a voice signal; a memory storing a command for suppressing howling of the voice signal; and a processor suppressing the howling of the voice signal depending on the command, wherein the command includes a command allowing the following steps to be performed: calculating a first ratio, which is a ratio between a power of the current frame signal for the howling candidate frequency and the short-section average, and a second ratio, which is a ratio between the long-section average and the short-section average; determining the howling candidate frequency to be a howling frequency of the current frame signal; and suppressing the howling of the voice signal depending on the howling frequency.

摘要翻译： 本文公开了一种抑制啸声的装置，包括：麦克风感测用户的声音以产生语音信号; 存储用于抑制语音信号的啸叫的命令的存储器; 以及处理器，其根据该命令抑制语音信号的啸叫，其中，所述命令包括允许执行以下步骤的命令：计算作为所述啸叫候选者的当前帧信号的功率之间的比率的第一比率 频率和短截面平均值，第二比率是长截面平均值与短截面平均值之比; 将所述嚎叫候选频率确定为当前帧信号的啸叫频率; 并且根据啸叫频率抑制语音信号的啸声。