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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

WO2008115886A1 AUDIO PROCESSING HARDWARE ELEMENTS 审中-公开
标题翻译：音频处理硬件元件
公开(公告)号：WO2008115886A1
公开(公告)日：2008-09-25
申请号：PCT/US2008/057266
申请日：2008-03-17
申请人： QUALCOMM INCORPORATED , KAMATH, Nidish, Ramachandra , CHOY, Eddie, L.T. , KULKARNI, Prajakt, V. , GUPTA, Samir, Kumar , MOLLOY, Stephen , DEVALAPALLI, Suresh
发明人： KAMATH, Nidish, Ramachandra , CHOY, Eddie, L.T. , KULKARNI, Prajakt, V. , GUPTA, Samir, Kumar , MOLLOY, Stephen , DEVALAPALLI, Suresh
IPC分类号： G10H7/00
CPC分类号： G10H7/004 , G10H1/0066 , G10H2230/031 , G10H2250/541
摘要： This disclosure describes techniques that make use of a plurality of hardware elements that operate simultaneously to service synthesis parameters generated from one or more audio files, such as musical instrument digital interface (MIDI) files. In one example, a method comprises storing audio synthesis parameters generated for one or more audio files of an audio frame, processing a first audio synthesis parameter using a first audio processing element of a hardware unit to generate first audio information, processing a second audio synthesis parameter using a second audio processing element of the hardware unit to generate second audio information, and generating audio samples for the audio frame based at least in part on a combination of the first and second audio information.
摘要翻译：本公开描述了利用多个硬件元件的技术，该多个硬件元件同时工作来服务从诸如乐器数字接口（MIDI）文件的一个或多个音频文件生成的合成参数。在一个示例中，一种方法包括存储为音频帧的一个或多个音频文件生成的音频合成参数，使用硬件单元的第一音频处理元件处理第一音频合成参数以产生第一音频信息，处理第二音频合成参数，使用所述硬件单元的第二音频处理元件来产生第二音频信息，以及至少部分地基于所述第一和第二音频信息的组合来生成所述音频帧的音频样本。

3. 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。

4. 发明申请

WO2008134689A1 AUTOMATIC VOLUME AND DYNAMIC RANGE ADJUSTMENT FOR MOBILE AUDIO DEVICES 审中-公开
标题翻译：自动音量和动态范围调整移动音频设备
公开(公告)号：WO2008134689A1
公开(公告)日：2008-11-06
申请号：PCT/US2008/061947
申请日：2008-04-30
申请人： QUALCOMM Incorporated , XIANG, Pei , WANG, Song , KULKARNI, Prajakt V , GUPTA, Samir Kumar , CHOY, Eddie L.t.
发明人： XIANG, Pei , WANG, Song , KULKARNI, Prajakt V , GUPTA, Samir Kumar , CHOY, Eddie L.t.
IPC分类号： H03G3/32 , H04M1/60
CPC分类号： H03G7/007 , H03G3/32 , H04M1/6016
摘要： A mobile audio device (for example, a cellular telephone, personal digital audio player, or MP3 player) performs Audio Dynamic Range Control (ADRC) (125) and Automatic Volume Control (AVC) (126) to increase the volume of sound (127) emitted from a speaker of' the mobile audio device so that faint passages of the audio will be more audible. This amplification of faint passages occurs without overly amplifying other louder passages, and without substantial distortion due to clipping. Multi-Microphone Active Noise Cancellation (MMANC) (133) functionality is, for example, used to remove background noise from audio information picked up on microphones of the mobile audio device. The noise-canceled audio may then be communicated from the device. The MMANC functionality generates a noise reference signal as an intermediate signal. The intermediate signal is conditioned and then used as a reference by the AVC process. The gain applied during the AVC process is a function of the noise reference signal.
摘要翻译：移动音频设备（例如，蜂窝电话，个人数字音频播放器或MP3播放器）执行音频动态范围控制（ADRC）（125）和自动音量控制（AVC）（126）以增加声音音量（127 ）从“移动音频设备”的扬声器发出，使得音频的微弱通道更可听见。这种微弱通道的放大发生，而不会过度放大其他更大的通道，并且没有由于限幅导致的实质性变形。例如，多麦克风有源噪声消除（MMANC）（133）功能用于从移动音频设备的麦克风拾取的音频信息中去除背景噪声。然后可以从设备传送噪声消除的音频。 MMANC功能产生噪声参考信号作为中间信号。中间信号被调节，然后用作AVC处理的参考。在AVC过程中应用的增益是噪声参考信号的函数。

5. 发明申请

WO2010088132A1 AUDIO CODING SELECTION BASED ON DEVICE OPERATING CONDITION 审中-公开
标题翻译：基于设备操作条件的音频编码选择
公开(公告)号：WO2010088132A1
公开(公告)日：2010-08-05
申请号：PCT/US2010/021665
申请日：2010-01-21
申请人： QUALCOMM INCORPORATED , SAMPAT, Kuntal, D. , CHOY, Eddie, L.T. , LINSKY, Joel
发明人： SAMPAT, Kuntal, D. , CHOY, Eddie, L.T. , LINSKY, Joel
IPC分类号： H04R5/033 , G10L19/00 , H03M7/30 , H04W52/02 , H03G3/32 , G10L19/14
CPC分类号： H04R1/1083 , G10L19/22 , H03G3/32 , H04M1/6066 , H04R27/00 , H04R2227/003 , H04R2420/07 , H04R2460/03
摘要： A sensor is configured to determine at least one operating condition of a device and a selector is configured to select an audio coding process for the device, based on the operating condition. The operating condition may include remaining battery life of the device and/or ambient noise level. The selected audio coding process may consume less power than another possible audio coding process during audio processing. The audio may include voice and/or audio playback, e.g., music playback.
摘要翻译：传感器被配置为确定设备的至少一个操作条件，并且选择器被配置为基于操作条件为设备选择音频编码处理。操作条件可以包括设备的电池寿命和/或环境噪声水平。在音频处理期间，所选择的音频编码处理可能消耗比另一可能的音频编码处理更少的功率。音频可以包括语音和/或音频播放，例如音乐播放。

6. 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。

7. 发明申请

WO2008118675A1 PIPELINE TECHNIQUES FOR PROCESSING MUSICAL INSTRUMENT DIGITAL INTERFACE (MIDI) FILES 审中-公开
标题翻译：用于处理音乐数字接口（MIDI）文件的管道技术
公开(公告)号：WO2008118675A1
公开(公告)日：2008-10-02
申请号：PCT/US2008/057271
申请日：2008-03-17
申请人： QUALCOMM Incorporated , KULKARNI, Prajakt V. , CHOY, Eddie L.t. , KAMATH, Nidish Ramachandra , GUPTA, Samir Kumar , MOLLOY, Stephen , DEVALAPALLI, Suresh
发明人： KULKARNI, Prajakt V. , CHOY, Eddie L.t. , KAMATH, Nidish Ramachandra , GUPTA, Samir Kumar , MOLLOY, Stephen , DEVALAPALLI, Suresh
IPC分类号： G10H7/00 , G10H1/00
CPC分类号： G10H1/0066 , G10H7/004
摘要： This disclosure describes techniques for processing audio files that comply with the musical instrument digital interface (MIDI) format. In particular, various tasks associated with MIDI file processing are delegated between software operating on a general purpose processor, firmware associated with a digital signal processor (DSP), and dedicated hardware that is specifically designed for MIDI file processing. Alternatively, a multi-threaded DSP may be used instead of a general purpose processor and the DSP. In one aspect, this disclosure provides a method comprising parsing MIDI files and scheduling MIDI events associated with the MIDI files using a first process, processing the MIDI events using a second process to generate MIDI synthesis parameters, and generating audio samples using a hardware unit based on the synthesis parameters.
摘要翻译：本公开描述了用于处理符合乐器数字接口（MIDI）格式的音频文件的技术。具体而言，与在通用处理器上运行的软件，与数字信号处理器（DSP）相关联的固件以及专门为MIDI文件处理而专门设计的专用硬件之间的任何与MIDI文件处理相关的各种任务被委派。或者，可以使用多线程DSP来代替通用处理器和DSP。在一个方面，本公开提供了一种方法，包括使用第一处理解析MIDI文件和调度与MIDI文件相关联的MIDI事件，使用第二处理来处理MIDI事件以产生MIDI合成参数，以及使用基于硬件单元生成音频样本对合成参数。

8. 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。

9. 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。

10. 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。

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