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1. 发明授权

EP3175564B1 SYSTEM AND METHOD OF REDUNDANCY BASED PACKET TRANSMISSION ERROR RECOVERY 有权
公开(公告)号：EP3175564B1
公开(公告)日：2020-09-09
申请号：EP15745128.7
申请日：2015-07-27
申请人： Qualcomm Incorporated
发明人： KRISHNAN, Venkatesh , RAJENDRAN, Vivek , SARKAR, Sandip , SUBASINGHA, Subasingha Shaminda , ATTI, Venkatraman S.
IPC分类号： H04L1/00 , H04L1/18

2. 发明授权

EP2959483B1 SYSTEMS AND METHODS FOR DETERMINING AN INTERPOLATION FACTOR SET 有权
标题翻译：用于确定内插因子集的系统和方法
公开(公告)号：EP2959483B1
公开(公告)日：2017-12-27
申请号：EP13770729.5
申请日：2013-09-03
申请人： Qualcomm Incorporated
发明人： RAJENDRAN, Vivek , SUBASINGHA, Subasingha Shaminda , KRISHNAN, Venkatesh
IPC分类号： G10L19/07 , G10L19/005
CPC分类号： G10L19/07 , G10L19/005

3. 发明公开

EP3175564A1 SYSTEM AND METHOD OF REDUNDANCY BASED PACKET TRANSMISSION ERROR RECOVERY 有权
标题翻译：基于冗余的分组传输错误恢复的系统和方法
公开(公告)号：EP3175564A1
公开(公告)日：2017-06-07
申请号：EP15745128.7
申请日：2015-07-27
申请人： Qualcomm Incorporated
发明人： KRISHNAN, Venkatesh , RAJENDRAN, Vivek , SARKAR, Sandip , SUBASINGHA, Subasingha Shaminda , ATTI, Venkatraman S.
IPC分类号： H04L1/00 , H04L1/18
摘要： A receiver is configured to receive packets that correspond to at least a subset of a sequence of packets and that include error correction data. The error correction data of a first packet of the packets includes a partial copy of a second packet. A buffer is configured to store the packets. An analyzer is configured to determine whether a first particular packet of the sequence is missing from the buffer, to determine whether a partial copy of the first particular packet is stored in the buffer as error correction data in a second particular packet, to update a value based at least in part on whether the first particular packet is missing from the buffer and the partial copy of the first particular packet is stored in the buffer, and to adjust an error recovery parameter based at least in part on the value.
摘要翻译：一个设备包括一个接收器，一个缓冲器，一个发射器和一个分析器。接收器被配置为接收对应于分组序列的至少一个子集的多个分组。多个分组中的第一分组的纠错数据包括多个分组中的第二分组的部分副本。分析器被配置为确定序列中的特定分组是否从缓冲器丢失，并且确定特定分组的部分副本是否存储在缓冲器中。分析器还被配置为至少部分地基于确定缓冲器不存储特定分组并且缓冲器不存储特定分组的部分副本，经由发射器向第二设备发送重传消息。

4. 发明公开

EP3161825A1 TEMPORAL GAIN ADJUSTMENT BASED ON HIGH-BAND SIGNAL CHARACTERISTIC 有权
公开(公告)号：EP3161825A1
公开(公告)日：2017-05-03
申请号：EP15731780.1
申请日：2015-06-05
申请人： Qualcomm Incorporated
发明人： ATTI, Venkatraman S. , KRISHNAN, Venkatesh , RAJENDRAN, Vivek , CHEBIYYAM, Venkata Subrahmanyam Chandra Sekhar , SUBASINGHA, Subasingha Shaminda
IPC分类号： G10L21/038 , G10L19/24 , G10L19/02 , G10L19/06
CPC分类号： G10L19/12 , G10L19/0204 , G10L19/032 , G10L19/06 , G10L19/24 , G10L21/0224 , G10L21/038 , G10L25/12 , G10L2019/0016
摘要： The present disclosure provides techniques for adjusting a temporal gain parameter and for adjusting linear prediction coefficients. A value of the temporal gain parameter may be based on a comparison of a synthesized high-band portion of an audio signal to a high-band portion of the audio signal. If a signal characteristic of an upper frequency range of the high-band portion satisfies a first threshold, the temporal gain parameter may be adjusted. A linear prediction (LP) gain may be determined based on an LP gain operation that uses a first value for an LP order. The LP gain may be associated with an energy level of an LP synthesis filter. The LP order may be reduced if the LP gain satisfies a second threshold.

5. 发明授权

EP3105757B1 HARMONIC BANDWIDTH EXTENSION OF AUDIO SIGNALS 有权
公开(公告)号：EP3105757B1
公开(公告)日：2019-12-11
申请号：EP15706610.1
申请日：2015-02-10
申请人： Qualcomm Incorporated
发明人： SUBASINGHA, Subasingha Shaminda , KRISHNAN, Venkatesh , ATTI, Venkatraman S. , RAJENDRAN, Vivek
IPC分类号： G10L21/038

6. 发明授权

EP2959478B1 SYSTEMS AND METHODS FOR MITIGATING POTENTIAL FRAME INSTABILITY 有权
公开(公告)号：EP2959478B1
公开(公告)日：2018-10-24
申请号：EP13770731.1
申请日：2013-09-03
申请人： Qualcomm Incorporated
发明人： SUBASINGHA, Subasingha Shaminda , KRISHNAN, Venkatesh , RAJENDRAN, Vivek
IPC分类号： G10L19/005 , G10L19/07
CPC分类号： G10L19/02 , G10L19/005 , G10L19/04 , G10L19/06 , G10L19/07
摘要： A method for mitigating potential frame instability by an electronic device is described. The method includes obtaining a frame subsequent in time to an erased frame. The method also includes determining whether the frame is potentially unstable. The method further includes applying a substitute weighting value to generate a stable frame parameter if the frame is potentially unstable.

7. 发明公开

EP3353788A1 ADAPTIVE NOISE SUPPRESSION FOR SUPER WIDEBAND MUSIC 审中-公开
公开(公告)号：EP3353788A1
公开(公告)日：2018-08-01
申请号：EP16747710.8
申请日：2016-07-27
申请人： Qualcomm Incorporated
发明人： DEWASURENDRA, Duminda Ashoka , RAJENDRAN, Vivek , SUBASINGHA, Subasingha Shaminda
IPC分类号： G10L25/81 , G10L25/84 , G10L21/0208
CPC分类号： G10L21/0208 , G10L19/20 , G10L19/265 , G10L25/81 , G10L25/84 , G10L2021/02087 , H04R1/08 , H04R2430/20
摘要： Techniques are described for performing adaptive noise suppression to improve handling of both speech signals and music signals at least up to super wideband (SWB) bandwidths. The techniques include identifying a context or environment in which audio data is captured, and adaptively changing a level of noise suppression applied to the audio data prior to bandwidth compressing (e.g., encoding) based on the context. For a valid speech context, an audio pre-processor may set a first level of noise suppression that is relatively aggressive in order to suppress noise (including music) in the speech signals. For a valid music context, the audio pre-processor may set a second level of noise suppression that is less aggressive in order to leave the music signals undistorted. In this way, a vocoder at a transmitter side wireless communication device may properly encode both speech and music signals with minimal distortions.

8. 发明公开

EP3172854A1 OFFSET SELECTION FOR ERROR CORRECTION DATA 有权
标题翻译：错误校正数据的偏移量选择
公开(公告)号：EP3172854A1
公开(公告)日：2017-05-31
申请号：EP15736362.3
申请日：2015-06-25
申请人： Qualcomm Incorporated
发明人： SUBASINGHA, Subasingha Shaminda , KRISHNAN, Venkatesh , RAJENDRAN, Vivek , ATTI, Venkatraman S. , POLISETTY, Chandra Mouli
IPC分类号： H04L1/20 , H04L1/00
CPC分类号： H03M13/353 , H04L1/0006 , H04L1/0009 , H04L1/0023 , H04L1/0026 , H04L1/0041 , H04L1/0045 , H04L1/205 , H04L43/087
摘要： A method includes determining, at a decoder of a first device, an offset value corresponding to an offset between a first particular packet and a second particular packet. The first device includes a de-jitter buffer. The method also includes transmitting the offset value to an encoder of a second device to enable the second device to send packets to the first device based on the offset value.
摘要翻译：一种方法包括在第一设备的解码器处确定与第一特定分组和第二特定分组之间的偏移相对应的偏移值。第一个器件包含一个去抖动缓冲器。该方法还包括将偏移值传送给第二设备的编码器以使第二设备能够基于该偏移值向第一设备发送分组。

10. 发明授权

EP3161823B1 ADJUSTMENT OF THE LINEAR PREDICTION ORDER OF AN AUDIO ENCODER 有权
公开(公告)号：EP3161823B1
公开(公告)日：2018-07-18
申请号：EP15729725.0
申请日：2015-06-05
申请人： Qualcomm Incorporated
发明人： ATTI, Venkatraman S. , KRISHNAN, Venkatesh , RAJENDRAN, Vivek , CHEBIYYAM, Venkata Subrahmanyam Chandra Sekhar , SUBASINGHA, Subasingha Shaminda
IPC分类号： G10L19/06 , G10L19/02 , G10L21/038 , G10L19/24
CPC分类号： G10L19/12 , G10L19/0204 , G10L19/032 , G10L19/06 , G10L19/24 , G10L21/0224 , G10L21/038 , G10L25/12 , G10L2019/0016
摘要： The present disclosure provides techniques for adjusting a temporal gain parameter and for adjusting linear prediction coefficients. A value of the temporal gain parameter may be based on a comparison of a synthesized high-band portion of an audio signal to a high-band portion of the audio signal. If a signal characteristic of an upper frequency range of the high-band portion satisfies a first threshold, the temporal gain parameter may be adjusted. A linear prediction (LP) gain may be determined based on an LP gain operation that uses a first value for an LP order. The LP gain may be associated with an energy level of an LP synthesis filter. The LP order may be reduced if the LP gain satisfies a second threshold.

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