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1. 发明申请

US20130066627A1 APPARATUS AND METHOD OF ENHANCING QUALITY OF SPEECH CODEC 审中-公开
公开(公告)号：US20130066627A1
公开(公告)日：2013-03-14
申请号：US13613792
申请日：2012-09-13
申请人： Mi-Suk LEE , Do-Young KIM , Byung-Sun LEE
发明人： Mi-Suk LEE , Do-Young KIM , Byung-Sun LEE
IPC分类号： G10L21/00
CPC分类号： G10L21/0208 , G10L19/24 , G10L21/0316 , G10L21/038 , G11B20/10527 , G11B2020/10555 , H03G3/341
摘要： An apparatus and method of improving the quality of a speech codec are provided. In the method, a first energy of a signal decoded by a low-band codec is calculated, and a second energy of a signal decoded by a low-band enhancement mode is calculated. Then, when the first energy is less than a first threshold value or less than a product of the second energy and a second threshold value, a size of the decoded signal is scaled. Accordingly, generation of a quantization error with respect to a silence segment is reduced.

2. 发明申请

US20130073282A1 APPARATUS AND METHOD OF ENHANCING QUALITY OF SPEECH CODEC 审中-公开
标题翻译：提高语音编解码质量的装置和方法
公开(公告)号：US20130073282A1
公开(公告)日：2013-03-21
申请号：US13613742
申请日：2012-09-13
申请人： Mi-Suk LEE , Do-Young KIM , Byung-Sun LEE
发明人： Mi-Suk LEE , Do-Young KIM , Byung-Sun LEE
IPC分类号： G10L21/00
CPC分类号： G10L21/0208 , G10L19/24 , G10L21/0316 , G10L21/038 , G11B20/10527 , G11B2020/10555 , H03G3/341
摘要： An apparatus and method of improving the quality of a speech codec are provided. In the method, a first energy of a signal decoded by a low-band codec is calculated, and a second energy of a signal decoded by a low-band enhancement mode is calculated. Then, when the first energy is less than a first threshold value or less than a product of the second energy and a second threshold value, a size of the decoded signal is scaled. Accordingly, generation of a quantization error with respect to a silence segment is reduced.
摘要翻译：提供了一种提高语音编解码器质量的装置和方法。在该方法中，计算由低频带编解码器解码的信号的第一能量，并且计算通过低频带增强模式解码的信号的第二能量。然后，当第一能量小于第一阈值或小于第二能量与第二阈值的乘积时，解码信号的大小被缩放。因此，减少相对于静音段的量化误差的产生。

3. 发明申请

US20110178807A1 METHOD AND APPARATUS FOR DECODING AUDIO SIGNAL 有权
标题翻译：解码音频信号的方法和装置
公开(公告)号：US20110178807A1
公开(公告)日：2011-07-21
申请号：US13011273
申请日：2011-01-21
申请人： Heesik YANG , Mi-Suk LEE , Hyun-Woo KIM , Jongmo SUNG , Hyun-Joo BAE , Byung-Sun LEE
发明人： Heesik YANG , Mi-Suk LEE , Hyun-Woo KIM , Jongmo SUNG , Hyun-Joo BAE , Byung-Sun LEE
IPC分类号： G10L19/00
CPC分类号： G10L19/093 , G10L19/24
摘要： Provided are a method and an apparatus for decoding an audio signal. A method for decoding an audio signal encoded by a layered sinusoidal pulse coding scheme using one or more sinusoidal pulses includes decoding the encoded audio signal, setting a smoothing frequency band of the decoded audio signal according to a layer structure of the layered sinusoidal pulse coding scheme, dividing the smoothing frequency band into one or more subbands, and smoothing the decoded audio signal on a subband-by-subband basis. Accordingly, a decoding operation time can be reduced and the quality of a synthesized signal can be improved by variably setting a frequency band to be smoothed, when decoding an audio signal encoded by a layered sinusoidal pulse coding scheme using one or more sinusoidal pulses.
摘要翻译：提供了一种用于对音频信号进行解码的方法和装置。一种使用一个或多个正弦脉冲对由分层正弦脉冲编码方案编码的音频信号进行解码的方法包括解码编码音频信号，根据分层正弦脉冲编码方案的层结构设置解码音频信号的平滑频带将平滑频带划分成一个或多个子带，并且以逐个子带为基础平滑解码的音频信号。因此，当使用一个或多个正弦脉冲对由分层正弦脉冲编码方案编码的音频信号进行解码时，可以通过可变地设置要平滑的频带来改善解码操作时间并且可以提高合成信号的质量。

4. 发明申请

US20110153337A1 ENCODING APPARATUS AND METHOD AND DECODING APPARATUS AND METHOD OF AUDIO/VOICE SIGNAL PROCESSING APPARATUS 审中-公开
标题翻译：编码装置和方法和解码装置和音频/语音信号处理装置的方法
公开(公告)号：US20110153337A1
公开(公告)日：2011-06-23
申请号：US12957027
申请日：2010-11-30
申请人： Hyun-Woo KIM , Jong-Mo SUNG , Mi-Suk LEE , Hee-Sik YANG , Hyun-Joo BAE , Byung-Sun LEE
发明人： Hyun-Woo KIM , Jong-Mo SUNG , Mi-Suk LEE , Hee-Sik YANG , Hyun-Joo BAE , Byung-Sun LEE
IPC分类号： G10L19/00
CPC分类号： G10L19/10
摘要： An encoding apparatus is provided. The encoding apparatus includes a track structure determiner determining a track structure using frequency coefficients, a frequency coefficient allocator allocating the frequency coefficients to each track according to the determined track structure, and a quantizer quantizing one or more pulses in each track based on a number of frequency coefficients allocated to a corresponding track. The encoding apparatus can prevent the degradation of sound quality by avoiding the problem faced by most sinusoidal quantization techniques using a fixed track structure, i.e., a failure to quantize all pulses due to mismatches between the pulse distribution of frequency coefficients and a track structure.
摘要翻译：提供一种编码装置。编码装置包括：轨道结构确定器，使用频率系数确定轨迹结构;频率系数分配器，根据所确定的轨道结构将频率系数分配给每个轨道，以及量化器，基于多个轨道结构的数量量化每个轨道中的一个或多个脉冲分配给相应轨道的频率系数。编码装置可以通过避免使用固定轨道结构的大多数正弦量化技术所面临的问题，即由于频率系数的脉冲分布与轨道结构之间的不匹配造成的所有脉冲的量化，从而可以防止音质的恶化。

5. 发明申请

US20090210219A1 APPARATUS AND METHOD FOR CODING AND DECODING RESIDUAL SIGNAL 审中-公开
标题翻译：用于编码和解码残留信号的装置和方法
公开(公告)号：US20090210219A1
公开(公告)日：2009-08-20
申请号：US12420215
申请日：2009-04-08
申请人： Jong-Mo SUNG , Hyun-Woo KIM , Mi-Suk LEE , Do-Young KIM
发明人： Jong-Mo SUNG , Hyun-Woo KIM , Mi-Suk LEE , Do-Young KIM
IPC分类号： G10L21/00
CPC分类号： G10L19/24 , G10L19/0212 , G10L19/035 , G10L19/06 , G10L21/038
摘要： Provided is a residual signal coding/decoding apparatus and method. The residual signal coding apparatus includes a transformer, a band splitter, a pulse searcher, and a pulse quantizer. The transformer transforms time-domain residual signals into a frequency domain to output transform coefficients. The band splitter splits the transform coefficients into bands to output the transform coefficients. The pulse searcher searches the transform coefficients for the respective bands to select optimal pulses and output parameters of the optimal pulses. The pulse quantizer quantizes the parameters of the optimal pulses.
摘要翻译：提供了一种残留信号编码/解码装置和方法。残余信号编码装置包括变压器，分束器，脉冲搜索器和脉冲量化器。变压器将时域残差信号变换为频域，输出变换系数。频带分离器将变换系数分成频带以输出变换系数。脉冲搜索器搜索各个频带的变换系数，以选择最佳脉冲和最佳脉冲的输出参数。脉冲量化器对最佳脉冲的参数进行量化。

6. 发明申请

US20110280337A1 APPARATUS AND METHOD FOR CODING SIGNAL IN A COMMUNICATION SYSTEM 有权
标题翻译：在通信系统中编码信号的装置和方法
公开(公告)号：US20110280337A1
公开(公告)日：2011-11-17
申请号：US13106649
申请日：2011-05-12
申请人： Mi-Suk LEE , Hong-Kook KIM , Young-Han LEE
发明人： Mi-Suk LEE , Hong-Kook KIM , Young-Han LEE
IPC分类号： H04L27/00
CPC分类号： G10L19/24 , G10L19/0208 , G10L19/0212 , G10L21/038
摘要： Provided is an apparatus and method for encoding a voice and audio signal by expanding a modified discrete cosine transform (MDCT) based CODEC to a wideband and a super-wideband in a communication system. The apparatus for encoding a signal in a communication system, includes a converter configured to convert a time domain signal corresponding to a service to be provided to users to a frequency domain signal, a quantization and normalization unit configured to calculate and quantize gain of each subband in the converted frequency domain signal and normalize a frequency coefficient of the each subband, a search unit configured to search patch information of each subband in the converted frequency domain signal using the normalized frequency coefficient, and a packetizer configured to packetize the quantized gain and the searched patch information and encode gain information of each subband in the frequency domain signal.
摘要翻译：提供了一种通过在通信系统中扩展基于修改的离散余弦变换（MDCT）的CODEC到宽带和超宽带来对语音和音频信号进行编码的装置和方法。用于对通信系统中的信号进行编码的装置包括转换器，被配置为将与要提供给用户的服务相对应的时域信号转换为频域信号，量化和归一化单元，被配置为计算和量化每个子带的增益在转换的频域信号中对归一化每个子带的频率系数，搜索单元，被配置为使用归一化的频率系数来搜索经转换的频域信号中的每个子带的贴片信息，以及分组器，被配置为将量化的增益和搜索补丁信息，并对频域信号中的每个子带的增益信息进行编码。

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