专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2009097413A1 ENHANCED BLIND SOURCE SEPARATION ALGORITHM FOR HIGHLY CORRELATED MIXTURES 审中-公开
标题翻译：用于高相关混合物的增强型盲源分离算法
公开(公告)号：WO2009097413A1
公开(公告)日：2009-08-06
申请号：PCT/US2009/032414
申请日：2009-01-29
申请人： QUALCOMM INCORPORATED , WANG, Song , RAMAKRISHNAN, Dinesh , GUPTA, Samir Kumar , CHOY, Eddie L.T.
发明人： WANG, Song , RAMAKRISHNAN, Dinesh , GUPTA, Samir Kumar , CHOY, Eddie L.T.
IPC分类号： H04R3/00 , H04R25/00 , G10L21/02
CPC分类号： G10L21/028 , G10L2021/02166 , H04R3/005 , H04R25/40
摘要： An enhanced blind source separation technique is provided to improve separation of highly correlated signal mixtures. A beamforming algorithm is used to precondition correlated first and second input signals in order to avoid indeterminacy problems typically associated with blind source separation. The beamforming algorithm may apply spatial filters to the first signal and second signal in order to amplify signals from a first direction while attenuating signals from other directions. Such directionality may serve to amplify a desired speech signal in the first signal and attenuate the desired speech signal from the second signal. Blind source separation is then performed on the beamformer output signals to separate the desired speech signal and the ambient noise and reconstruct an estimate of the desired speech signal. To enhance the operation of the beamformer and/or blind source separation, calibration may be performed at one or more stages.
摘要翻译：提供增强的盲源分离技术来改善高度相关的信号混合物的分离。波束形成算法用于预处理相关的第一和第二输入信号，以避免通常与盲源分离相关联的不确定性问题。波束成形算法可以对第一信号和第二信号应用空间滤波器，以便在衰减来自其它方向的信号的同时放大来自第一方向的信号。这种方向性可以用于在第一信号中放大期望的语音信号，并从第二信号中衰减所需的语音信号。然后对波束形成器输出信号执行盲源分离，以分离所需的语音信号和环境噪声，并重构所需语音信号的估计。为了增强波束形成器和/或盲源分离的操作，可以在一个或多个阶段执行校准。

2. 发明申请

WO2007095624A2 DIGITAL DOMAIN SAMPLING RATE CONVERTER 审中-公开
标题翻译：数字域采样率转换器
公开(公告)号：WO2007095624A2
公开(公告)日：2007-08-23
申请号：PCT/US2007/062250
申请日：2007-02-15
申请人： QUALCOMM INCORPORATED , WANG, Song , CHOY, Eddie L.T. , KULKAMI, Prajakt, V. , GUPTA, Samir, Kumar
发明人： WANG, Song , CHOY, Eddie L.T. , KULKAMI, Prajakt, V. , GUPTA, Samir, Kumar
IPC分类号： H03H17/06
CPC分类号： H03H17/0685 , H03H17/0294
摘要： Techniques are described for sampling rate conversion in the digital domain by up-sampling and down-sampling a digital signal according to a selected intermediate sampling frequency. A prototype anti-aliasing filter that has a bandwidth with multiple factors is stored in memory. The techniques include selecting an intermediate sampling frequency to be an integer multiple of a desired output sampling frequency of a digital signal based on the factors of the prototype filter, and selecting a down-sampling factor to be the same integer associated with the selected intermediate sampling frequency. A filter generator generates an anti-aliasing filter for the selected down-sampling factor based on the prototype filter. A sampling rate converter up-samples the digital signal at an input sampling frequency to the selected intermediate sampling frequency, filters the digital signal with the derived anti-aliasing filter, and down-samples the digital signal by the selected down-sampling factor to the desired output sampling frequency.
摘要翻译：通过根据选择的中间采样频率对数字信号进行上采样和下采样来描述数字域中的采样率转换的技术。具有多种因素带宽的原型抗混叠滤波器存储在内存中。该技术包括基于原型滤波器的因子来选择中间采样频率为数字信号的期望输出采样频率的整数倍，并且选择下采样因子为与所选择的中间采样相关联的相同整数频率。滤波器生成器基于原型滤波器为选定的下采样因子生成抗混叠滤波器。采样率转换器将输入采样频率的数字信号上采样到选定的中间采样频率，用导出的抗混叠滤波器对数字信号进行滤波，并将数字信号通过选择的下采样因子下采样到所需的输出采样频率。

3. 发明公开

EP2245619A1 SYSTEMS, METHODS, AND APPARATUS FOR CONTEXT DESCRIPTOR TRANSMISSION 审中-公开
标题翻译：用于上下文描述符传输的系统，方法和装置
公开(公告)号：EP2245619A1
公开(公告)日：2010-11-03
申请号：EP08871634.5
申请日：2008-09-30
申请人： QUALCOMM Incorporated
发明人： EL-MALEH, Khaled Helmi , NAGARAJA, Nagendra , CHOY, Eddie L.T.
IPC分类号： G10L19/00 , G10L21/02
CPC分类号： G10L21/02 , G10L19/012 , G10L21/0208 , G10L21/0272
摘要： Configurations disclosed herein include systems, methods, and apparatus that may be applied in a voice communications and/or storage application to remove, enhance, and/or replace the existing context.
摘要翻译：这里公开的配置包括可以应用于语音通信和/或存储应用中以去除，增强和/或替换现有上下文的系统，方法和设备。

4. 发明申请

WO2009097021A1 SYSTEMS, METHODS, AND APPARATUS FOR CONTEXT DESCRIPTOR TRANSMISSION 审中-公开
标题翻译：用于语境描述符传输的系统，方法和装置
公开(公告)号：WO2009097021A1
公开(公告)日：2009-08-06
申请号：PCT/US2008/078327
申请日：2008-09-30
申请人： QUALCOMM INCORPORATED , EL-MALEH, Khaled Helmi , NAGARAJA, Nagendra , CHOY, Eddie L.T.
发明人： EL-MALEH, Khaled Helmi , NAGARAJA, Nagendra , CHOY, Eddie L.T.
IPC分类号： G10L19/00 , G10L21/02
CPC分类号： G10L21/02 , G10L19/012 , G10L21/0208 , G10L21/0272
摘要： Configurations disclosed herein include systems, methods, and apparatus that may be applied in a voice communications and/or storage application to remove, enhance, and/or replace the existing context.
摘要翻译：本文公开的配置包括可以应用于语音通信和/或存储应用中以去除，增强和/或替代现有上下文的系统，方法和装置。

5. 发明申请

WO2007143373A2 MIXING TECHNIQUES FOR MIXING AUDIO 审中-公开
标题翻译：混合音乐的混合技术
公开(公告)号：WO2007143373A2
公开(公告)日：2007-12-13
申请号：PCT/US2007/069232
申请日：2007-05-18
申请人： QUALCOMM INCORPORATED , XIANG, Pei , CHOY, Eddie L.T. , KULKARNI, Prajakt V. , GUPTA, Samir Kumar
发明人： XIANG, Pei , CHOY, Eddie L.T. , KULKARNI, Prajakt V. , GUPTA, Samir Kumar
CPC分类号： H04S7/30 , H04M1/6016 , H04M1/72558 , H04R2499/11
摘要： This disclosure describes audio mixing techniques that intelligently combine two or more audio signals into an output signal. The techniques allow audio to be combined, yet create perceptual differentiation between the different audio signals. The result is that a user is able to hear both audio signals in a combined output, but the different audio signals do not perceptually interfere with one another. The techniques are relatively simple to implement and are well suited for radio telephones.
摘要翻译：本公开描述了将两个或多个音频信号智能地组合成输出信号的音频混合技术。这些技术允许音频被组合，但是在不同音频信号之间产生感知差异。结果是，用户能够听到组合输出中的两个音频信号，但是不同的音频信号不会感知到彼此干扰。这些技术实现起来相对简单，并且非常适合于无线电话。

6. 发明公开

EP2245861A1 ENHANCED BLIND SOURCE SEPARATION ALGORITHM FOR HIGHLY CORRELATED MIXTURES 有权
标题翻译： VERBESSERTER BLINDQUELLEN-SEPARATIONSALGORITHMUSFÜRHOCHKORRELIERTE MISCHUNGEN
公开(公告)号：EP2245861A1
公开(公告)日：2010-11-03
申请号：EP09706217.8
申请日：2009-01-29
申请人： QUALCOMM Incorporated
发明人： WANG, Song , RAMAKRISHNAN, Dinesh , GUPTA, Samir Kumar , CHOY, Eddie L.T.
IPC分类号： H04R3/00 , H04R25/00 , G10L21/02
CPC分类号： G10L21/028 , G10L2021/02166 , H04R3/005 , H04R25/40
摘要： An enhanced blind source separation technique is provided to improve separation of highly correlated signal mixtures. A beamforming algorithm is used to precondition correlated first and second input signals in order to avoid indeterminacy problems typically associated with blind source separation. The beamforming algorithm may apply spatial filters to the first signal and second signal in order to amplify signals from a first direction while attenuating signals from other directions. Such directionality may serve to amplify a desired speech signal in the first signal and attenuate the desired speech signal from the second signal. Blind source separation is then performed on the beamformer output signals to separate the desired speech signal and the ambient noise and reconstruct an estimate of the desired speech signal. To enhance the operation of the beamformer and/or blind source separation, calibration may be performed at one or more stages.
摘要翻译：提供增强的盲源分离技术来改善高度相关的信号混合物的分离。波束形成算法用于预处理相关的第一和第二输入信号，以避免通常与盲源分离相关联的不确定性问题。波束形成算法可以对第一信号和第二信号应用空间滤波器，以便在衰减来自其它方向的信号的同时放大来自第一方向的信号。这样的方向性可以用于在第一信号中放大期望的语音信号，并从第二信号中衰减所需的语音信号。然后对波束形成器输出信号执行盲源分离，以分离所需的语音信号和环境噪声，并重构所需语音信号的估计。为了增强波束形成器和/或盲源分离的操作，可以在一个或多个阶段执行校准。

7. 发明公开

EP2025203A2 MIXING TECHNIQUES FOR MIXING AUDIO 审中-公开
标题翻译： MISCHVERFAHREN ZUR MISCHUNG VON AUDIOINHALTEN
公开(公告)号：EP2025203A2
公开(公告)日：2009-02-18
申请号：EP07797579.5
申请日：2007-05-18
申请人： QUALCOMM Incorporated
发明人： XIANG, Pei , CHOY, Eddie L.T. , KULKARNI, Prajakt V. , GUPTA, Samir Kumar
IPC分类号： H04S7/00
CPC分类号： H04S7/30 , H04M1/6016 , H04M1/72558 , H04R2499/11
摘要： This disclosure describes audio mixing techniques that intelligently combine two or more audio signals into an output signal. The techniques allow audio to be combined, yet create perceptual differentiation between the different audio signals. The result is that a user is able to hear both audio signals in a combined output, but the different audio signals do not perceptually interfere with one another. The techniques are relatively simple to implement and are well suited for radio telephones.
摘要翻译：本公开描述了将两个或多个音频信号智能地组合成输出信号的音频混合技术。这些技术允许音频被组合，但是在不同音频信号之间产生感知差异。结果是用户能够听到组合输出中的两个音频信号，但是不同的音频信号不会感知到彼此干扰。这些技术实现起来相对简单，并且非常适合于无线电话。

8. 发明申请

WO2009097023A1 SYSTEMS, METHODS, AND APPARATUS FOR CONTEXT REPLACEMENT BY AUDIO LEVEL 审中-公开
标题翻译：系统，方法和设备，通过音频级别进行上下文替换
公开(公告)号：WO2009097023A1
公开(公告)日：2009-08-06
申请号：PCT/US2008/078332
申请日：2008-09-30
申请人： QUALCOMM INCORPORATED , NAGARAJA, Nagendra , EL-MALEH, Khaled Helmi , CHOY, Eddie L.T.
发明人： NAGARAJA, Nagendra , EL-MALEH, Khaled Helmi , CHOY, Eddie L.T.
IPC分类号： G10L21/02
CPC分类号： G10L21/02 , G10L19/012 , G10L21/0208 , G10L21/0272
摘要： Configurations disclosed herein include systems, methods, and apparatus that may be applied in a voice communications and/or storage application to remove, enhance, and/or replace the existing context.
摘要翻译：本文公开的配置包括可以应用于语音通信和/或存储应用中以去除，增强和/或替代现有上下文的系统，方法和装置。

9. 发明申请

WO2009033147A2 POWER EFFICIENT BATCH-FRAME AUDIO DECODING APPARATUS, SYSTEM AND METHOD 审中-公开
标题翻译：功率高效的分批帧音频解码装置，系统和方法
公开(公告)号：WO2009033147A2
公开(公告)日：2009-03-12
申请号：PCT/US2008/075578
申请日：2008-09-08
申请人： QUALCOMM INCORPORATED , YOO, Heejong , KAMATH, Nidish Ramachandra , CHOY, Eddie L.T. , JOHN, Johnny Kallacheril , GUPTA, Samir Kumar
发明人： YOO, Heejong , KAMATH, Nidish Ramachandra , CHOY, Eddie L.T. , JOHN, Johnny Kallacheril , GUPTA, Samir Kumar
CPC分类号： G10L19/16 , G06F1/3203 , G06F3/162 , H04W52/0274
摘要： Power savings in a mobile device is accomplished by generating audio samples by decoding a bitstream with a decoding system within the mobile device. The generated audio samples are transferred into at least one memory bank in a set of memory banks in a power saver block within the mobile device. Parts of the decoding system not involved in the storing of the generated audio samples are switched off after batch decoding a bitstream associated with multiple audio frames. The bitstream includes bits less than that found in one audio file. At least one of the memory banks in the set of memory banks is power collapsible. The fetching of the decoded by the decoding system can be synchronized with a paging channel of a modem in the mobile device. The transferred audio samples is a lossless compression and may occur after a re-encoding.
摘要翻译：移动设备中的功率节省通过利用移动设备内的解码系统对比特流进行解码来生成音频样本来实现。产生的音频采样被传送到移动设备内的节电器块中的一组存储体中的至少一个存储体中。在批量解码与多个音频帧相关联的比特流之后，不涉及存储生成的音频样本的部分解码系统被关闭。比特流包括比在一个音频文件中找到的比特少的比特。该组存储体中的至少一个存储体是可折叠的。由解码系统解码的解码可以与移动设备中的调制解调器的寻呼信道同步。传输的音频样本是无损压缩的，可能会在重新编码之后发生。

10. 发明申请

WO2007051124A1 ENCODER-ASSISTED FRAME LOSS CONCEALMENT TECHNIQUES FOR AUDIO CODING 审中-公开
标题翻译：用于音频编码的编码器辅助帧丢失隐藏技术
公开(公告)号：WO2007051124A1
公开(公告)日：2007-05-03
申请号：PCT/US2006/060237
申请日：2006-10-25
申请人： QUALCOMM INCORPORATED , RYU, Sang-Uk , CHOY, Eddie L.T. , GUPTA, Samir Kumar
发明人： RYU, Sang-Uk , CHOY, Eddie L.T. , GUPTA, Samir Kumar
IPC分类号： G10L19/00
CPC分类号： G10L19/005 , G10L19/02
摘要： Encoder-assisted frame loss concealment (FLC) techniques for decoding audio signals are described. A decoder may discard an erroneous frame of an audio signal and may implement the encoder-assisted FLC techniques in order to accurately conceal the discarded frame based on neighboring frames and side-information transmitted from the encoder. The encoder-assisted FLC techniques include estimating magnitudes of frequency-domain data for the frame based on frequency-domain data of neighboring frames, and estimating signs of the frequency-domain data based on a subset of signs transmitted from the encoder as side-information. Frequency-domain data for a frame of an audio signal includes tonal components and noise components. Signs estimated from a random signal may be substantially accurate for the noise components of the frequency-domain data. However, to achieve highly accurate sign estimation for the tonal components, the encoder transmits signs for the tonal components of the frequency-domain data as side-information.
摘要翻译：描述了用于解码音频信号的编码器辅助帧丢失隐藏（FLC）技术。解码器可以丢弃音频信号的错误帧，并且可以实现编码器辅助的FLC技术，以便基于相邻帧和从编码器发送的侧信息来准确地隐藏丢弃的帧。编码器辅助FLC技术包括基于相邻帧的频域数据来估计帧的频域数据的幅度，并且基于从编码器发送的符号子集估计频域数据的符号作为侧信息。音频信号的帧的频域数据包括音调分量和噪声分量。从随机信号估计的符号对于频域数据的噪声分量可能是基本准确的。然而，为了实现对音调分量的高度准确的符号估计，编码器将用于频域数据的音调分量的符号作为侧信息发送。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式