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1. 发明授权

US09601125B2 Systems and methods of performing noise modulation and gain adjustment 有权
公开(公告)号：US09601125B2
公开(公告)日：2017-03-21
申请号：US14012749
申请日：2013-08-28
申请人： QUALCOMM Incorporated
发明人： Venkatraman Srinivasa Atti , Venkatesh Krishnan
IPC分类号： G10L21/038 , G10L19/032 , G10L19/06
CPC分类号： G10L19/167 , G10L19/032 , G10L19/035 , G10L19/06 , G10L21/038 , G10L2019/0003 , H03G3/301 , H03G3/3089
摘要： A method includes receiving a first value of a mixing factor. The first value corresponds to a first portion of an audio signal received at an audio encoder. The method includes receiving a second value of the mixing factor. The second value corresponds to a second portion of the audio signal. The method also includes generating a third value of the mixing factor at least partially based on the first value and the second value and mixing an excitation signal with modulated noise based on the third value. Another method includes determining a first set of spectral frequency values corresponding to an audio signal and determining a second set of spectral frequency values that approximates the first set of spectral frequency values. A gain value corresponding to at least a portion of the audio signal is adjusted based on a difference between the first set and the second set.

2. 发明申请

US20140229170A1 Systems and Methods of Performing Gain Control 有权
标题翻译：执行增益控制的系统和方法
公开(公告)号：US20140229170A1
公开(公告)日：2014-08-14
申请号：US13959090
申请日：2013-08-05
申请人： QUALCOMM Incorporated
发明人： Venkatraman Srinivasa Atti , Venkatesh Krishnan
IPC分类号： G10L19/03
CPC分类号： G10L19/03 , G10L21/0264 , G10L21/038
摘要： A particular method includes determining, based on an inter-line spectral pair (LSP) spacing corresponding to an audio signal, that the audio signal includes a component corresponding to an artifact-generating condition. The method also includes, in response to determining that the audio signal includes the component, adjusting a gain parameter corresponding to the audio signal. For example, the gain parameter may be adjusted via gain attenuation and/or gain smoothing.
摘要翻译：特定方法包括基于对应于音频信号的线间频谱对（LSP）间隔来确定音频信号包括对应于假象产生条件的分量。该方法还包括响应于确定音频信号包括该分量，调整对应于该音频信号的增益参数。例如，可以通过增益衰减和/或增益平滑来调整增益参数。

3. 发明授权

US09263054B2 Systems and methods for controlling an average encoding rate for speech signal encoding 有权
标题翻译：用于控制语音信号编码的平均编码速率的系统和方法
公开(公告)号：US09263054B2
公开(公告)日：2016-02-16
申请号：US14015984
申请日：2013-08-30
申请人： QUALCOMM Incorporated
发明人： Subasingha Shaminda Subasingha , Vivek Rajendran , Venkatesh Krishnan , Venkatraman Srinivasa Atti
IPC分类号： G10L19/24 , G10L19/12
CPC分类号： G10L19/12 , G10L19/24
摘要： A method for controlling an average encoding rate by an electronic device is described. The method includes obtaining a speech signal. The method also includes determining a first average rate. The method further includes determining a first threshold based on the first average rate. The method additionally includes controlling the average encoding rate by determining at least one other threshold based on the first threshold. The method also includes sending an encoded speech signal.
摘要翻译：描述了一种通过电子设备来控制平均编码速率的方法。该方法包括获得语音信号。该方法还包括确定第一平均速率。该方法还包括基于第一平均速率确定第一阈值。该方法还包括通过基于第一阈值确定至少一个其他阈值来控制平均编码率。该方法还包括发送编码语音信号。

4. 发明申请

US20140229172A1 Systems and Methods of Performing Noise Modulation and Gain Adjustment 有权
标题翻译：执行噪声调制和增益调整的系统和方法
公开(公告)号：US20140229172A1
公开(公告)日：2014-08-14
申请号：US14012749
申请日：2013-08-28
申请人： QUALCOMM Incorporated
发明人： Venkatraman Srinivasa Atti , Venkatash Krishnan
IPC分类号： G10L19/032
CPC分类号： G10L19/167 , G10L19/032 , G10L19/035 , G10L19/06 , G10L21/038 , G10L2019/0003 , H03G3/301 , H03G3/3089
摘要： A method includes receiving a first value of a mixing factor. The first value corresponds to a first portion of an audio signal received at an audio encoder. The method includes receiving a second value of the mixing factor. The second value corresponds to a second portion of the audio signal. The method also includes generating a third value of the mixing factor at least partially based on the first value and the second value and mixing an excitation signal with modulated noise based on the third value. Another method includes determining a first set of spectral frequency values corresponding to an audio signal and determining a second set of spectral frequency values that approximates the first set of spectral frequency values. A gain value corresponding to at least a portion of the audio signal is adjusted based on a difference between the first set and the second set.
摘要翻译：一种方法包括接收混合因子的第一值。第一值对应于在音频编码器处接收的音频信号的第一部分。该方法包括接收混合因子的第二值。第二值对应于音频信号的第二部分。该方法还包括至少部分地基于第一值和第二值产生混合因子的第三值，并且基于第三值将激励信号与调制噪声混合。另一种方法包括确定对应于音频信号的第一组频谱频率值，以及确定近似第一组频谱频率值的第二组频谱频率值。基于第一组和第二组之间的差来调整对应于音频信号的至少一部分的增益值。

5. 发明授权

US10063609B2 Methods and apparatus for multimedia conferences using single source multi-unicast 有权
公开(公告)号：US10063609B2
公开(公告)日：2018-08-28
申请号：US15227894
申请日：2016-08-03
申请人： QUALCOMM Incorporated
发明人： Nikolai Konrad Leung , Venkatraman Srinivasa Atti
IPC分类号： H04L29/06 , H04M7/00 , H04L12/18
CPC分类号： H04L65/601 , H04L12/1818 , H04L65/403 , H04M7/0072
摘要： Methods and apparatus are disclosed for communication in a conference using a single source multi-unicast architecture. In one aspect, a method for communication between participants in a conference is provided. The method includes receiving, from a first device, a first message for establishing a conference, the first message including a list of codec types for use in the conference. The method further includes transmitting, at a second device, a second message to a third device, the second message offering one or more codec types from the list of codec types. The method further includes processing, at the second device, a first data stream having a first codec type from the one or more codec types.

6. 发明授权

US09741350B2 Systems and methods of performing gain control 有权
公开(公告)号：US09741350B2
公开(公告)日：2017-08-22
申请号：US13959090
申请日：2013-08-05
申请人： QUALCOMM Incorporated
发明人： Venkatraman Srinivasa Atti , Venkatesh Krishnan
IPC分类号： G10L19/03 , G10L21/0264 , G10L21/038
CPC分类号： G10L19/03 , G10L21/0264 , G10L21/038
摘要： A particular method includes determining, based on an inter-line spectral pair (LSP) spacing corresponding to an audio signal, that the audio signal includes a component corresponding to an artifact-generating condition. The method also includes, in response to determining that the audio signal includes the component, adjusting a gain parameter corresponding to the audio signal. For example, the gain parameter may be adjusted via gain attenuation and/or gain smoothing.

7. 发明申请

US20130191117A1 VOICE ACTIVITY DETECTION IN PRESENCE OF BACKGROUND NOISE 有权
标题翻译：语音活动检测在背景噪声中的存在
公开(公告)号：US20130191117A1
公开(公告)日：2013-07-25
申请号：US13670312
申请日：2012-11-06
申请人： Qualcomm Incorporated
发明人： Venkatraman Srinivasa Atti , Venkatesh Krishnan
IPC分类号： G10L21/02 , G10L15/20
CPC分类号： G10L25/84
摘要： In speech processing systems, compensation is made for sudden changes in the background noise in the average signal-to-noise ratio (SNR) calculation. SNR outlier filtering may be used, alone or in conjunction with weighting the average SNR. Adaptive weights may be applied on the SNRs per band before computing the average SNR. The weighting function can be a function of noise level, noise type, and/or instantaneous SNR value. Another weighting mechanism applies a null filtering or outlier filtering which sets the weight in a particular band to be zero. This particular band may be characterized as the one that exhibits an SNR that is several times higher than the SNRs in other bands.
摘要翻译：在语音处理系统中，对平均信噪比（SNR）计算中背景噪声的突然变化进行补偿。可以单独使用SNR异常值滤波或与加权平均SNR结合使用。在计算平均SNR之前，每个频带的SNR可以应用自适应权重。加权函数可以是噪声电平，噪声类型和/或瞬时SNR值的函数。另一个加权机制应用将特定频带中的权重设置为零的空滤波或异常值滤波。该特定频带可以被表征为具有比其他频带中的SNR高几倍的SNR的特征频带。

8. 发明申请

US20170054777A1 METHODS AND APPARATUS FOR MULTIMEDIA CONFERENCES USING SINGLE SOURCE MULTI-UNICAST 审中-公开
标题翻译：使用单源多平方米的多媒体会议的方法和设备
公开(公告)号：US20170054777A1
公开(公告)日：2017-02-23
申请号：US15227894
申请日：2016-08-03
申请人： QUALCOMM Incorporated
发明人： Nikolai Konrad Leung , Venkatraman Srinivasa Atti
IPC分类号： H04L29/06 , H04M7/00
CPC分类号： H04L65/601 , H04L12/1818 , H04L65/403 , H04M7/0072
摘要： Methods and apparatus are disclosed for communication in a conference using a single source multi-unicast architecture. In one aspect, a method for communication between participants in a conference is provided. The method includes receiving, from a first device, a first message for establishing a conference, the first message including a list of codec types for use in the conference. The method further includes transmitting, at a second device, a second message to a third device, the second message offering one or more codec types from the list of codec types. The method further includes processing, at the second device, a first data stream having a first codec type from the one or more codec types.
摘要翻译：公开了用于在使用单个源多单播架构的会议中进行通信的方法和装置。一方面，提供了一种会议参与者之间的通信方法。该方法包括从第一设备接收用于建立会议的第一消息，所述第一消息包括在会议中使用的编解码器类型的列表。该方法还包括在第二设备将第二消息发送到第三设备，所述第二消息从编解码器类型列表中提供一个或多个编解码器类型。该方法还包括在第二设备处处理具有来自一个或多个编解码器类型的第一编解码器类型的第一数据流。

9. 发明授权

US09099098B2 Voice activity detection in presence of background noise 有权
标题翻译：语音活动检测存在背景噪音
公开(公告)号：US09099098B2
公开(公告)日：2015-08-04
申请号：US13670312
申请日：2012-11-06
申请人： Qualcomm Incorporated
发明人： Venkatraman Srinivasa Atti , Venkatesh Krishnan
IPC分类号： G10L15/00 , G10L15/20 , G10L25/84
CPC分类号： G10L25/84
摘要： In speech processing systems, compensation is made for sudden changes in the background noise in the average signal-to-noise ratio (SNR) calculation. SNR outlier filtering may be used, alone or in conjunction with weighting the average SNR. Adaptive weights may be applied on the SNRs per band before computing the average SNR. The weighting function can be a function of noise level, noise type, and/or instantaneous SNR value. Another weighting mechanism applies a null filtering or outlier filtering which sets the weight in a particular band to be zero. This particular band may be characterized as the one that exhibits an SNR that is several times higher than the SNRs in other bands.
摘要翻译：在语音处理系统中，对平均信噪比（SNR）计算中背景噪声的突然变化进行补偿。可以单独使用SNR异常值滤波或与加权平均SNR结合使用。在计算平均SNR之前，每个频带的SNR可以应用自适应权重。加权函数可以是噪声电平，噪声类型和/或瞬时SNR值的函数。另一个加权机制应用将特定频带中的权重设置为零的空滤波或异常值滤波。该特定频带可以被表征为具有比其他频带中的SNR高几倍的SNR的特征频带。

10. 发明申请

US20140229171A1 Systems and Methods of Performing Filtering for Gain Determination 有权
标题翻译：执行滤波的系统和方法进行增益测定
公开(公告)号：US20140229171A1
公开(公告)日：2014-08-14
申请号：US13959188
申请日：2013-08-05
申请人： Qualcomm Incorporated
发明人： Venkatraman Srinivasa Atti , Venkatesh Krishnan , Vivek Rajendran , Stephane Pierre Villette
IPC分类号： G10L19/03
CPC分类号： G10L19/03 , G10L19/07 , G10L19/24 , G10L21/0208 , G10L21/0216 , G10L21/0388
摘要： A particular method includes determining, based on spectral information corresponding to an audio signal that includes a low-band portion and a high-band portion, that the audio signal includes a component corresponding to an artifact-generating condition. The method also includes filtering the high-band portion of the audio signal and generating an encoded signal. Generating the encoded signal includes determining gain information based on a ratio of a first energy corresponding to filtered high-band output to a second energy corresponding to the low-band portion to reduce an audible effect of the artifact-generating condition.
摘要翻译：特定方法包括基于与包括低频带部分和高频带部分的音频信号相对应的频谱信息来确定音频信号包括对应于假象产生条件的分量。该方法还包括对音频信号的高频带部分进行滤波并产生编码信号。生成编码信号包括基于与经滤波的高频带输出相对应的第一能量与对应于低频带部分的第二能量的比率确定增益信息，以减少伪影产生条件的可听见的影响。

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