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1. 发明授权

US08805694B2 Method and apparatus for encoding and decoding audio signal using adaptive sinusoidal coding 有权
标题翻译：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
公开(公告)号：US08805694B2
公开(公告)日：2014-08-12
申请号：US13201517
申请日：2010-02-16
申请人： Mi-Suk Lee , Hyun-Joo Bae , Byung-Sun Lee
发明人： Mi-Suk Lee , Hyun-Joo Bae , Byung-Sun Lee
IPC分类号： G10L21/00 , G10L19/00 , G10L19/02 , G10L25/90 , G10L25/93 , H03M7/00
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。

2. 发明授权

US09111535B2 Method and apparatus for decoding audio signal 有权
标题翻译：用于解码音频信号的方法和装置
公开(公告)号：US09111535B2
公开(公告)日：2015-08-18
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： G10L21/02 , G10L19/093 , G10L19/24
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。

3. 发明申请

US20120095754A1 METHOD AND APPARATUS FOR ENCODING AND DECODING AUDIO SIGNAL USING LAYERED SINUSOIDAL PULSE CODING 有权
标题翻译：使用层状SINUSOIDAL脉冲编码来编码和解码音频信号的方法和装置
公开(公告)号：US20120095754A1
公开(公告)日：2012-04-19
申请号：US13321297
申请日：2010-05-19
申请人： Mi-Suk Lee , Heesik Yang , Hyun-Woo Kim , Jongmo Sung , Hyun-Joo Bae , Byung-Sun Lee
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。

4. 发明申请

US20110301961A1 METHOD AND APPARATUS FOR ENCODING AND DECODING AUDIO SIGNAL USING ADAPTIVE SINUSOIDAL CODING 有权
标题翻译：使用自适应SINUSOIDAL编码编码和解码音频信号的方法和装置
公开(公告)号：US20110301961A1
公开(公告)日：2011-12-08
申请号：US13201517
申请日：2010-02-16
申请人： Mi-Suk Lee , Hyun-Joo Bae , Byung-Sun Lee
发明人： Mi-Suk Lee , Hyun-Joo Bae , Byung-Sun Lee
IPC分类号： G10L21/00
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。

5. 发明授权

US08805680B2 Method and apparatus for encoding and decoding audio signal using layered sinusoidal pulse coding 有权
标题翻译：使用分层正弦脉冲编码对音频信号进行编码和解码的方法和装置
公开(公告)号：US08805680B2
公开(公告)日：2014-08-12
申请号：US13321297
申请日：2010-05-19
申请人： Mi-Suk Lee , Heesik Yang , Hyun-Woo Kim , Jongmo Sung , Hyun-Joo Bae , Byung-Sun Lee
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。

6. 发明授权

US09142222B2 Apparatus and method of enhancing quality of speech codec 有权
标题翻译：提高语音编解码质量的装置和方法
公开(公告)号：US09142222B2
公开(公告)日：2015-09-22
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 , G10L21/0208 , G10L19/24 , G10L21/0316 , G11B20/10 , H03G3/34 , G10L21/038
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。

7. 发明授权

US09135926B2 Apparatus and method of enhancing quality of speech codec 有权
公开(公告)号：US09135926B2
公开(公告)日：2015-09-15
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 , G10L21/0208 , G10L19/24 , G10L21/0316 , G11B20/10 , H03G3/34 , G10L21/038
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.

8. 发明授权

US09135925B2 Apparatus and method of enhancing quality of speech codec 有权
标题翻译：提高语音编解码质量的装置和方法
公开(公告)号：US09135925B2
公开(公告)日：2015-09-15
申请号：US12529239
申请日：2008-11-28
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 , G10L21/0208 , G10L19/24 , G10L21/0316 , G11B20/10 , H03G3/34 , G10L21/038
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 core 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，计算由核心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。

9. 发明申请

US20100057449A1 APPARATUS AND METHOD OF ENHANCING QUALITY OF SPEECH CODEC 有权
标题翻译：提高语音编解码质量的装置和方法
公开(公告)号：US20100057449A1
公开(公告)日：2010-03-04
申请号：US12529239
申请日：2008-11-28
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： G10L19/00
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 core 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，计算由核心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。

10. 发明申请

US20130191134A1 METHOD AND APPARATUS FOR DECODING AN AUDIO SIGNAL USING A SHAPING FUNCTION 审中-公开
标题翻译：用于使用形状函数解码音频信号的方法和装置
公开(公告)号：US20130191134A1
公开(公告)日：2013-07-25
申请号：US13876691
申请日：2011-09-28
申请人： Mi-Suk Lee
发明人： Mi-Suk Lee
IPC分类号： G10L19/008
CPC分类号： G10L19/008 , G10L19/005 , G10L19/12
摘要： The present invention relates to a method and apparatus for decoding an audio signal using a shaping function. According to one embodiment of the present invention, the method for decoding an audio signal comprises the following steps: taking frame data of the audio signal as an input; restoring a fixed codebook of the frame data using a random function; calculating a shaping function using an adaptive codebook of the frame data; shaping the restored fixed codebook using the shaping function; and synthesizing the audio signal from the frame data using the shaped fixed codebook and adaptive codebook. According to the present invention, the fixed codebook may be restored using the shaping function calculated on the basis of the adaptive codebook upon the occurrence of frame data loss, thus emphasizing a pitch period and reducing the influence of the fixed codebook between the pitch periods so as to reduce the degradation in the quality of the synthesized signal.
摘要翻译：本发明涉及使用整形功能对音频信号进行解码的方法和装置。根据本发明的一个实施例，用于解码音频信号的方法包括以下步骤：将音频信号的帧数据作为输入; 使用随机函数恢复帧数据的固定码本; 使用所述帧数据的自适应码本来计算整形函数; 使用整形功能对恢复的固定码本进行整形; 并使用成形固定码本和自适应码本从帧数据合成音频信号。根据本发明，可以使用在发生帧数据丢失时基于自适应码本计算的整形函数来恢复固定码本，从而强调音调周期并减少固定码本在音调周期之间的影响以减少合成信号的质量下降。

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