公开(公告)号：US20070282599A1

公开(公告)日：2007-12-06

申请号：US11757528

申请日：2007-06-04

申请人： Ki-hyun CHOO ,  Jung-hoe Kim ,  Eun-ml Oh ,  Mino Lei ,  Chang-yong Son

发明人： Ki-hyun CHOO ,  Jung-hoe Kim ,  Eun-ml Oh ,  Mino Lei ,  Chang-yong Son

IPC分类号： G10L19/14

CPC分类号： G10L19/0208 ,  G10L21/038

摘要： A method and apparatus to perform bandwidth extension encoding and decoding encodes and/or decodes a high frequency signal using an excitation signal for a low frequency signal encoded in a time domain or a frequency domain or using an excitation spectrum for the low frequency signal. Accordingly, although an audio signal is encoded or decoded using a small number of bits, the quality of sound corresponding to a signal in a high frequency band does not degrade. Therefore, a coding efficiency of the audio signal can be maximized.

摘要翻译： 执行带宽扩展编码和解码的方法和装置使用用于在时域或频域中编码的低频信号的激励信号或者使用低频信号的激励频谱对高频信号进行编码和/或解码。 因此，尽管使用少量的比特对音频信号进行编码或解码，但是与高频带中的信号相对应的声音质量不会降低。 因此，可以使音频信号的编码效率最大化。

公开(公告)号：US08612215B2

公开(公告)日：2013-12-17

申请号：US11930844

申请日：2007-10-31

申请人： Chang-yong Son ,  Bun-mi Oh ,  Ho-sang Sung ,  Ki-hyun Choo ,  Jung-hue Kim ,  Kang-eun Lee

发明人： Chang-yong Son ,  Bun-mi Oh ,  Ho-sang Sung ,  Ki-hyun Choo ,  Jung-hue Kim ,  Kang-eun Lee

IPC分类号： G10L19/14

CPC分类号： G10L19/0204 ,  G10L19/093

摘要： A method and apparatus to extract an important frequency component of an audio signal and a method and apparatus to encode and/or decode an audio signal by using the same. The method of extracting an important frequency component of an audio signal includes converting an audio signal of a time domain into an audio signal of a frequency domain, selecting a frequency band having a harmonic feature from the converted audio signal of the frequency domain, and extracting an important frequency component from the selected frequency band having the harmonic feature.

摘要翻译： 一种用于提取音频信号的重要频率分量的方法和装置，以及通过使用该方法和装置对音频信号进行编码和/或解码的方法和装置。 提取音频信号的重要频率分量的方法包括将时域的音频信号转换为频域的音频信号，从频域的转换的音频信号中选择具有谐波特征的频带，以及提取 来自具有谐波特征的所选频带的重要频率分量。

公开(公告)号：US08433565B2

公开(公告)日：2013-04-30

申请号：US10891423

申请日：2004-07-15

申请人： Woo-suk Lee ,  Ho-chong Park ,  Chang-yong Son

发明人： Woo-suk Lee ,  Ho-chong Park ,  Chang-yong Son

IPC分类号： G01L19/02 ,  G01L19/00

CPC分类号： G10L21/038 ,  G10L19/24

摘要： An apparatus to compress a wide-band speech signal, the apparatus including a narrow-band speech compressor to compress a low-band speech signal of the wide-band speech signal and output the compressed low-band speech signal as a low-band speech packet; and a high-band speech compressor to compress a high-band speech signal of the wide-band speech signal using energy information of the low-band speech signal provided from the narrow-band speech compressor, and outputs the compressed high-band speech signal as a high-band speech packet.

摘要翻译： 一种用于压缩宽带语音信号的装置，该装置包括窄带语音压缩器，以压缩宽带语音信号的低频语音信号，并将压缩的低频语音信号作为低频带语音输出 包; 以及高频带语音压缩器，使用从窄带语音压缩器提供的低频语音信号的能量信息来压缩宽带语音信号的高频语音信号，并输出压缩的高频带语音信号 作为高频带语音包。

公开(公告)号：US20090089479A1

公开(公告)日：2009-04-02

申请号：US12071286

申请日：2008-02-19

申请人： Chang-yong Son ,  Do-hyung Kim ,  Kang-gun Lee

发明人： Chang-yong Son ,  Do-hyung Kim ,  Kang-gun Lee

IPC分类号： G06F12/00

CPC分类号： H04S3/008 ,  H04S2420/07

摘要： A memory management method is provided. In the method, a spatial parameter included in an encoding result is represented as a vector of a time slot and a frequency band in a first domain, a temporary matrix is calculated in the first domain by using the difference between vectors of a current time slot and a previous time slot at the same frequency band and then is stored in a memory, and then a matrix needed to decode the encoding result is represented as a matrix for a time slot and a frequency band in a second domain by using the temporary matrix, thereby reducing the load on the memory for storing matrices on which a decoding operation is performed.

摘要翻译： 提供了存储器管理方法。 在该方法中，包含在编码结果中的空间参数被表示为第一域中的时隙和频带的向量，通过使用当前时隙的向量之间的差在第一域中计算临时矩阵 和相同频带的先前时隙，然后存储在存储器中，然后将编码结果解码所需的矩阵通过使用临时矩阵表示为时隙和第二域中的频带的矩阵 从而减少用于存储执行解码操作的矩阵的存储器上的负载。

公开(公告)号：US20090037169A1

公开(公告)日：2009-02-05

申请号：US11930750

申请日：2007-10-31

申请人： Kang-eun LEE ,  Do-hyung Kim ,  Chang-yong Son

发明人： Kang-eun LEE ,  Do-hyung Kim ,  Chang-yong Son

IPC分类号： G10L19/12

CPC分类号： G10L19/16 ,  G10L19/12

摘要： A method and apparatus for implementing fixed codebooks as a common module are provided. In the method of implementing fixed codebooks of a plurality of speech codecs as a common module, it is possible to include only a part excluding fixed codebooks in a communication terminal or communication system, support various speech codecs without using a chip with high price and high performance, and reduce a memory space that is occupied by the speech codecs by generating a track of a fixed codebook corresponding to a speech codec based on information on the speech codec among the plurality of speech codecs and selecting a codebook vector corresponding to a target signal among codebook vectors constructed with combinations of pulses represented by the generated track. In addition, it is possible to reduce processing complexity as compared with a case of embodying the common fixed codebook module in software by embodying the common fixed codebook module in hardware. In addition, it is possible to improve the entire voice processing performance by applying the latest fixed codebook searching algorithm only to the common fixed codebook, thereby easily applying the latest fixed codebook searching algorithm to the entire voice codec.

摘要翻译： 提供了一种用于实现固定码本作为公共模块的方法和装置。 在将多个语音编解码器的固定码本实现为公共模块的方法中，可以在通信终端或通信系统中仅包括不包括固定码本的部分，而不使用高价格高的芯片支持各种语音编解码器 通过基于多个语音编解码器中的语音编解码器的信息生成与语音编解码器对应的固定码本的轨道，并且选择与目标信号相对应的码本矢量，来降低语音编解码器所占用的存储器空间 在由所生成的轨道表示的脉冲的组合构成的码本矢量中。 此外，与通过在硬件中实施公共固定码本模块的软件中体现公共固定码本模块的情况相比，可以降低处理复杂度。 此外，通过将最新的固定码本搜索算法应用于公共固定码本，可以提高整个语音处理性能，从而容易地将最新的固定码本搜索算法应用于整个语音编解码器。

公开(公告)号：US20100036658A1

公开(公告)日：2010-02-11

申请号：US12588357

申请日：2009-10-13

申请人： Chang-yong Son ,  Ho-chong Park ,  Yong-beom Lee ,  Woo-suk Lee

发明人： Chang-yong Son ,  Ho-chong Park ,  Yong-beom Lee ,  Woo-suk Lee

IPC分类号： G10L19/12 ,  G10L21/00 ,  G10L21/04

CPC分类号： G10L19/24

摘要： A speech compression apparatus including: a first band-transform unit transforming a wideband speech signal to a narrowband low-band speech signal; a narrowband speech compressor compressing the narrowband low-band speech signal and outputting a result of the compressing as a low-band speech packet; a decompression unit decompressing the low-band speech packet and obtaining a decompressed wideband low-band speech signal; an error detection unit detecting an error signal that corresponds to a difference between the wideband speech signal and the decompressed wideband low-band speech signal; and a high-band speech compression unit compressing the error signal and a high-band speech signal of the wideband speech signal and outputting the result of the compressing as a high-band speech packet.

摘要翻译： 一种语音压缩装置，包括：将宽带语音信号变换为窄带低频语音信号的第一频带变换单元; 窄带语音压缩器压缩窄带低频语音信号并输出​​压缩结果作为低频语音分组; 解压缩单元解压缩低频带语音分组并获得解压缩的宽带低频语音信号; 误差检测单元，检测对应于宽带语音信号和解压缩宽带低频带语音信号之间的差的误差信号; 以及高频语音压缩单元，压缩宽带语音信号的误差信号和高频带语音信号，并将压缩结果输出为高频带语音分组。

公开(公告)号：US07624022B2

公开(公告)日：2009-11-24

申请号：US10882339

申请日：2004-07-02

申请人： Chang-yong Son ,  Ho-chong Park ,  Yong-beom Lee ,  Woo-suk Lee

发明人： Chang-yong Son ,  Ho-chong Park ,  Yong-beom Lee ,  Woo-suk Lee

IPC分类号： G10L21/00

CPC分类号： G10L19/24

摘要： A speech compression apparatus including: a first band-transform unit transforming a wideband speech signal to a narrowband low-band speech signal; a narrowband speech compressor compressing the narrowband low-band speech signal and outputting a result of the compressing as a low-band speech packet; a decompression unit decompressing the low-band speech packet and obtaining a decompressed wideband low-band speech signal; an error detection unit detecting an error signal that corresponds to a difference between the wideband speech signal and the decompressed wideband low-band speech signal; and a high-band speech compression unit compressing the error signal and a high-band speech signal of the wideband speech signal and outputting the result of the compressing as a high-band speech packet.

摘要翻译： 一种语音压缩装置，包括：将宽带语音信号变换为窄带低频语音信号的第一频带变换单元; 窄带语音压缩器压缩窄带低频语音信号并输出​​压缩结果作为低频语音分组; 解压缩单元解压缩低频带语音分组并获得解压缩的宽带低频语音信号; 误差检测单元，检测对应于宽带语音信号和解压缩宽带低频带语音信号之间的差的误差信号; 以及高频语音压缩单元，压缩宽带语音信号的误差信号和高频带语音信号，并将压缩结果输出为高频带语音分组。

公开(公告)号：US20050027516A1

公开(公告)日：2005-02-03

申请号：US10891423

申请日：2004-07-15

申请人： Woo-suk Lee ,  Ho-chong Park ,  Chang-yong Son

发明人： Woo-suk Lee ,  Ho-chong Park ,  Chang-yong Son

IPC分类号： G10L19/02 ,  G10L19/00 ,  G10L19/12 ,  G10L19/14 ,  G10L21/02 ,  H03M7/30 ,  G10L19/04

CPC分类号： G10L21/038 ,  G10L19/24

摘要： An apparatus to compress a wide-band speech signal, the apparatus including a narrow-band speech compressor to compress a low-band speech signal of the wide-band speech signal and output the compressed low-band speech signal as a low-band speech packet; and a high-band speech compressor to compress a high-band speech signal of the wide-band speech signal using energy information of the low-band speech signal provided from the narrow-band speech compressor, and outputs the compressed high-band speech signal as a high-band speech packet.

摘要翻译： 一种用于压缩宽带语音信号的装置，该装置包括窄带语音压缩器，以压缩宽带语音信号的低频语音信号，并将压缩的低频语音信号作为低频带语音输出 包; 以及高频带语音压缩器，使用从窄带语音压缩器提供的低频语音信号的能量信息来压缩宽带语音信号的高频语音信号，并输出压缩的高频带语音信号 作为高频带语音包。

公开(公告)号：US08050913B2

公开(公告)日：2011-11-01

申请号：US11930750

申请日：2007-10-31

申请人： Kang-eun Lee ,  Do-hyung Kim ,  Chang-yong Son

发明人： Kang-eun Lee ,  Do-hyung Kim ,  Chang-yong Son

IPC分类号： G10L19/12

CPC分类号： G10L19/16 ,  G10L19/12

摘要： A method and apparatus for implementing fixed codebooks as a common module are provided. In the method of implementing fixed codebooks of a plurality of speech codecs as a common module, it is possible to include only a part excluding fixed codebooks in a communication terminal or communication system, support various speech codecs without using a chip with high price and high performance, and reduce a memory space that is occupied by the speech codecs by generating a track of a fixed codebook corresponding to a speech codec based on information on the speech codec among the plurality of speech codecs and selecting a codebook vector corresponding to a target signal among codebook vectors constructed with combinations of pulses represented by the generated track. In addition, it is possible to reduce processing complexity as compared with a case of embodying the common fixed codebook module in software by embodying the common fixed codebook module in hardware. In addition, it is possible to improve the entire voice processing performance by applying the latest fixed codebook searching algorithm only to the common fixed codebook, thereby easily applying the latest fixed codebook searching algorithm to the entire voice codec.

摘要翻译： 提供了一种用于实现固定码本作为公共模块的方法和装置。 在将多个语音编解码器的固定码本实现为公共模块的方法中，可以在通信终端或通信系统中仅包括不包括固定码本的部分，而不使用高价格高的芯片支持各种语音编解码器 通过基于多个语音编解码器中的语音编解码器的信息生成与语音编解码器对应的固定码本的轨道，并且选择与目标信号相对应的码本矢量，来降低语音编解码器所占用的存储器空间 在由所生成的轨道表示的脉冲的组合构成的码本矢量中。 此外，与通过在硬件中实施公共固定码本模块的软件中体现公共固定码本模块的情况相比，可以降低处理复杂度。 此外，通过将最新的固定码本搜索算法应用于公共固定码本，可以提高整个语音处理性能，从而容易地将最新的固定码本搜索算法应用于整个语音编解码器。

公开(公告)号：US07080007B2

公开(公告)日：2006-07-18

申请号：US10253418

申请日：2002-09-25

申请人： Chang-yong Son ,  Vladimir Shin ,  Sang-ryong Kim

发明人： Chang-yong Son ,  Vladimir Shin ,  Sang-ryong Kim

IPC分类号： G10L11/02

CPC分类号： G10L25/78 ,  G10L21/02

摘要： An apparatus and a method for computing a Speech Absence Probability (SAP), and an apparatus and a method for removing noise by using the SAP computing device and method are provided. The provided SAP computing device for computing the SAP indicating probability that speech is absent in a mth frame, from a first through Ncth posteriori (Nc means the total number of channels) Signal to Noise Ratios (SNR) calculated with regard to the mth frame of a speech signal and a first through Ncth predicted SNRs predicted with regard to the mth frame, includes: a first through Ncth likelihood ratio generators for generating a first through Ncth likelihood ratios from the first through Ncth posterior SNRs and the first through Ncth predicted SNRs, and outputting them; a first multiplying unit for multiplying the first through Ncth likelihood ratios by a predetermined a priori probability, and outputting the multiplication results; an adding unit for adding each of the multiplication results received from the first multiplying unit to a predetermined value, and outputting the added results; a second multiplying unit for multiplying the added results received from the adding unit and outputting the multiplication result; and a inverse number calculator for calculating inverse number of the multiplication result received from the second multiplying unit and outputting the calculated inverse number as the SAP. Therefore, since the accuracy of the calculated SAP is high, noise can be efficiently removed from the speech signal that may have noise and an enhanced speech signal with an enhanced quality can be provided.

摘要翻译： 提供了一种用于计算语音缺席概率（SAP）的装置和方法，以及通过使用SAP计算装置和方法来消除噪声的装置和方法。 提供的用于计算SAP的SAP计算设备，指示在第帧中从第一至Nc第（S）个后验（Nc表示总信道数）的语音不存在语音的概率， 相对于语音信号的第m帧和/或第一至第N个预测SNR计算的信噪比（SNR）与第m个/ 包括：第一至第N个第一个似然比发生器，用于产生从第一到第N个第个似然比， / SUP>后验SNR和第一至第N个第个预测SNR，并输出它们; 第一乘法单元，用于将第一至第N个第个似然比乘以预定的先验概率，并输出乘法结果; 加法单元，用于将从第一乘法单元接收的乘法结果中的每一个相加到预定值，并输出相加结果; 第二乘法单元，用于将从加法单元接收的相加结果相乘并输出相乘结果; 以及逆数计算器，用于计算从第二乘法单元接收的乘法结果的倒数，并输出计算出的倒数作为SAP。 因此，由于计算出的SAP的精度高，所以可以从可能具有噪声的语音信号中有效地去除噪声，并且可以提供具有提高质量的增强语音信号。