Method and system for universal sampling rate conversion
    1.
    发明申请
    Method and system for universal sampling rate conversion 审中-公开
    通用采样率转换方法和系统

    公开(公告)号:US20070165761A1

    公开(公告)日:2007-07-19

    申请号:US11292499

    申请日:2005-11-29

    IPC分类号: H04L7/00

    CPC分类号: H03H17/0642 H03H2017/0298

    摘要: A sampling rate converter (100) is provided. The system can include a data buffer (102), a processor (104) for processing data in the buffer (10), and a plurality of sampling rate lines for configuring the processor. For example, the input signal can have an input sampling frequency corresponding to a first sampling rate line (110) and an output signal having an output sampling frequency corresponding to a second sampling rate line (112). The processor (104) can convert the input samples corresponding to the first sampling rate to output samples corresponding to the second sampling rate using a single filter (700). The first line (110) can include approximate sampling rates of 8 kHz, 16 kHz, 32 kHz, and 64 kHz; the second line (112) can include approximate sampling rates of 12 kHz, 48 kHz, and 96 kHz; and the third line (114) can include approximate sampling rates of 11.025 kHz, 22.05 kHz, and 44.1 kHz.

    摘要翻译: 提供采样率转换器(100)。 该系统可以包括数据缓冲器(102),用于处理缓冲器(10)中的数据的处理器(104)以及用于配置处理器的多个采样率线。 例如,输入信号可以具有对应于第一采样率线(110)的输入采样频率和具有对应于第二采样率线(112)的输出采样频率的输出信号。 处理器(104)可以使用单个滤波器(700)将对应于第一采样率的输入采样转换为对应于第二采样率的输出采样。 第一行(110)可以包括8 kHz,16 kHz,32 kHz和64 kHz的近似采样率; 第二行(112)可以包括12kHz,48kHz和96kHz的近似采样率; 并且第三行(114)可以包括11.025kHz,22.05kHz和44.1kHz的近似采样率。

    Method and system for correcting transducer non-linearities
    2.
    发明申请
    Method and system for correcting transducer non-linearities 审中-公开
    用于校正传感器非线性的方法和系统

    公开(公告)号:US20070140058A1

    公开(公告)日:2007-06-21

    申请号:US11283616

    申请日:2005-11-21

    IPC分类号: B06B1/06

    CPC分类号: H04R3/04

    摘要: The embodiments of the invention concern a method (400) and system (100) for modeling transducer non-linearities. The method can include converting (402) a transducer signal to a displacement signal that is proportional to a transducer cone displacement, and applying (404) a correction to the displacement signal. The transducer signal can be one of an input signal to the transducer (102) or an acoustic output signal of the transducer. The method can account for at least one mechanical transducer non-linearity which can be a cone excursion, a diaphragm stiffness, or a diaphragm displacement. The method can account for at least one acoustic transducer non-linearity which can account for an acoustic jetting out of a port. The system can further include a sensor coupled to said transducer for physically measuring a cone displacement.

    摘要翻译: 本发明的实施例涉及用于建模换能器非线性的方法(400)和系统(100)。 该方法可以包括将换能器信号转换(402)到与换能器锥形位移成比例的位移信号,并且对该位移信号应用(404)校正。 换能器信号可以是到换能器(102)的输入信号之一或换能器的声输出信号之一。 该方法可以考虑至少一个机械传感器非线性,其可以是锥形偏移,隔膜刚度或隔膜位移。 该方法可以考虑至少一个声学换能器非线性,其可以解释从端口的声学喷射。 该系统还可以包括耦合到所述换能器的传感器,用于物理测量锥体位移。

    Method and system for operation of a voice activity detector
    3.
    发明申请
    Method and system for operation of a voice activity detector 审中-公开
    语音活动检测器的操作方法和系统

    公开(公告)号:US20070036342A1

    公开(公告)日:2007-02-15

    申请号:US11198080

    申请日:2005-08-05

    IPC分类号: H04M9/08

    CPC分类号: H04M9/082

    摘要: The invention concerns a system (100) and method (400) for operation of a voice activity detector (230). The system can include a speaker (105), a first microphone (110) and a second microphone (120) in which the first microphone and the second microphone can capture acoustic output from the speaker. The system can also include an adaptive module (220) in which the first microphone and the second microphone can provide signals to the adaptive module, and the adaptive module can provide an input to the voice activity detector. The adaptive module can receive a first input (242) from the first microphone and a second input (243) from the second microphone and can attempt to determine (430) a transformation between the first and second inputs for setting a configuration of the voice activity detector.

    摘要翻译: 本发明涉及用于语音活动检测器(230)的操作的系统(100)和方法(400)。 该系统可以包括扬声器(105),第一麦克风(110)和第二麦克风(120),其中第一麦克风和第二麦克风可以从扬声器捕获声音输出。 该系统还可以包括自适应模块(220),其中第一麦克风和第二麦克风可以向自适应模块提供信号,并且自适应模块可以向语音活动检测器提供输入。 自适应模块可以从第一麦克风接收第一输入(242)和来自第二麦克风的第二输入(243),并且可以尝试确定(430)第一和第二输入之间的变换,以设置语音活动的配置 探测器。