公开(公告)号：JP2013070395A

公开(公告)日：2013-04-18

申请号：JP2012245596

申请日：2012-11-07

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： WANG SONG ,  DINESH RAMAKRISHNAN ,  SAMIR KUMAR GUPTA ,  EDDIE L T CHOY

IPC: H04R3/00 ,  G10L21/0272 ,  G10L21/028 ,  G10L21/0308 ,  H04R1/40

CPC classification number: G10L21/028 ,  G10L2021/02166 ,  H04R3/005 ,  H04R25/40

Abstract: PROBLEM TO BE SOLVED: To provide an enhanced blind source separation technique to improve separation of highly correlated signal mixtures.SOLUTION: A beamforming algorithm is used to precondition correlated first and second input signals S, S. The beamforming algorithm applies spatial filters 211 to the first signal and the second signal in order to amplify signals from a first direction while attenuating signals from other directions. Such directionality serves to amplify a desired speech signal in the first signal and attenuate the desired speech signal from the second signal. Blind source separation 210 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 is performed at one or more stages 208, 213, 215.

Abstract translation: 要解决的问题：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。 解决方案：波束形成算法用于预处理相关的第一和第二输入信号S 1 ，S 2 。 波束成形算法将空间滤波器211应用于第一信号和第二信号，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语音信号。 然后对波束形成器输出信号执行盲源分离210，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，在一个或多个阶段208,213,215进行校准。版权所有：（C）2013，JPO和INPIT

公开(公告)号：JP2013059064A

公开(公告)日：2013-03-28

申请号：JP2012232135

申请日：2012-10-19

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： XIANG PEI ,  WANG SONG ,  PRAJAKT V KULKARNI ,  SAMIR KUMAR GUPTA ,  EDDIE L T CHOY

IPC: H03G3/20 ,  G10L21/0224 ,  G10L21/028 ,  G10L21/0332 ,  H03G7/00 ,  H04R3/00 ,  H04R3/02

CPC classification number: H03G7/007 ,  H03G3/32 ,  H04M1/6016

Abstract: PROBLEM TO BE SOLVED: To provide a method and apparatus for noise cancellation and automatic volume control for a mobile audio device.SOLUTION: A mobile audio device 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 can 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 used to remove background noise from audio information picked up on microphones of the mobile audio device.

Abstract translation: 要解决的问题：提供用于移动音频设备的噪声消除和自动音量控制的方法和装置。

解决方案：移动音频设备执行音频动态范围控制（ADRC）125和自动音量控制（AVC）126以增加从移动音频设备的扬声器发射的声音127的音量，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。 多麦克风主动噪声消除（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。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2013242896A

公开(公告)日：2013-12-05

申请号：JP2013147109

申请日：2013-07-12

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： HEEJONG YOO ,  NIDIJ RAMACHANDLER KAMAS ,  EDDIE L T CHOY ,  JOHNNY KALLACHERIL JOHN ,  SAMIR KUMAR GUPTA

IPC: G06F1/32 ,  G10L19/018

CPC classification number: G10L19/16 ,  G06F1/3203 ,  G06F3/162 ,  H04W52/0274 ,  Y02D70/00

Abstract: PROBLEM TO BE SOLVED: To reduce battery consumption in audio decoding in a mobile device.SOLUTION: Generated audio samples are transferred into at least one memory bank in a power saver block within a mobile device. The power to parts of a decoding system not involved in storing the generated audio samples are switched off after batch decoding of a bitstream associated with multiple audio frames is completed. The bitstream includes fewer bits than those included in one audio file. The memory bank allows power shutoff. Fetching of the decoded can be synchronized with a paging channel of a modem in the mobile device. The transferred audio samples are a lossless compression and may occur after re-encoding.

Abstract translation: 要解决的问题：减少移动设备中音频解码中的电池消耗。解决方案：生成的音频样本被传输到移动设备内的节电块中的至少一个存储体。 在与多个音频帧相关联的比特流的批量解码完成之后，不涉及存储生成的音频样本的解码系统的部分的功率被关闭。 比特流包括比包括在一个音频文件中的位少的位。 存储器可以关闭电源。 解码的获取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，并且可能在重新编码之后发生。

公开(公告)号：BRPI0817731A8

公开(公告)日：2019-01-08

申请号：BRPI0817731

申请日：2008-09-26

Applicant: QUALCOMM INC

Inventor： EDDIE L T CHOY ,  SAMIR HUMA GUPTA ,  SONG WANG

IPC: B32B5/16

公开(公告)号：HK1043856B

公开(公告)日：2008-12-24

申请号：HK02105488

申请日：2002-07-25

Applicant: QUALCOMM INC

Inventor： AMITAVA DAS ,  EDDIE L T CHOY

IPC: G10L19/04 ,  G10L13/00 ,  G10L19/00 ,  G10L19/02 ,  G10L19/12 ,  G10L25/90