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    • 1. 发明申请
    • METHOD AND SYSTEM FOR SUPPRESSING RECEIVER AUDIO REGENERATION
    • 用于抑制接收机音频再现的方法和系统
    • WO2007040884A2
    • 2007-04-12
    • PCT/US2006/034352
    • 2006-09-02
    • MOTOROLA, INC.PAVLOV, Peter, M.MCINTOSH, Jason, D.JOHNSON, Graeme, P.
    • PAVLOV, Peter, M.MCINTOSH, Jason, D.JOHNSON, Graeme, P.
    • G10L11/04
    • G10L21/02G10L21/013H04R3/02
    • The invention concerns a method (500) and system (100) for suppressing receiver audio regeneration. The method (500) includes the steps of receiving a communication signal (502), at a Radio Frequency (RF) unit (102), demodulating the communication signal to an audio signal (504), monitoring a volume level of the audio signal (506), and shifting the pitch of the audio signal when the volume level reaches a predetermined threshold (508), and playing the pitch-shifted audio signal out of a speaker to produce a pitch-shifted acoustic signal (510). The method can shift the pitch of the audio signal to produce a pitch-shifted acoustic signal with signal properties suppressing regeneration of the acoustic signal onto the audio signal at the RF unit. The amount of pitch-shifting can be a function of the volume level.
    • 本发明涉及用于抑制接收机音频再生的方法(500)和系统(100)。 方法(500)包括以下步骤:在射频(RF)单元(102)处接收通信信号(502),将通信信号解调成音频信号(504),监视音频信号的音量 506),并且当音量达到预定阈值(508)时移动音频信号的音调,并且从扬声器播放音调移位音频信号以产生音调移位声信号(510)。 该方法可以移动音频信号的音调以产生具有抑制声信号在RF单元上的音频信号的再生的信号特性的音调移位声信号。 音调移位量可以是音量水平的函数。
    • 2. 发明申请
    • SPEAKER DIAGNOSTICS BASED UPON DRIVING-POINT IMPEDANCE
    • 基于驱动点阻抗的扬声器诊断
    • WO2006065473A2
    • 2006-06-22
    • PCT/US2005042297
    • 2005-11-22
    • MOTOROLA INCPAVLOV PETER MMCINTOSH JASON DYEAGER DAVID M
    • PAVLOV PETER MMCINTOSH JASON DYEAGER DAVID M
    • H04R29/00H04R3/00
    • H04R29/003
    • A speaker (100) having a diagnostic capability, as well as a circuit (101) and related methods (500) for performing speaker diagnostics based upon a driving-point impedance are provided. The speaker includes a flexible cone (104) and a voice coil (106) connected to the flexible cone for driving the flexible cone so as to convert electrical signals into sound. The speaker also includes a signal source (110) connected to the voice coil for supplying a test signal to the voice coil. The speaker further includes a signal sensor (112) electrically connected to the voice coil for sensing a response signal occurring in response to the test signal. Additionally, the speaker includes a condition determining module (114) for determining a driving-point impedance based upon the response signal and for comparing the driving-point impedance to a predetermined impedance to thereby determine a condition of the speaker.
    • 提供具有诊断能力的扬声器(100)以及用于基于驱动点阻抗执行说话者诊断的电路(101)和相关方法(500)。 扬声器包括柔性锥体(104)和连接到柔性锥体的音圈(106),用于驱动柔性锥体,以将电信号转换成声音。 扬声器还包括连接到音圈的信号源(110),用于向音圈提供测试信号。 扬声器还包括电连接到音圈的信号传感器(112),用于感测响应于测试信号而发生的响应信号。 另外,扬声器包括用于基于响应信号确定驱动点阻抗并将驱动点阻抗与预定阻抗相比较的条件确定模块(114),从而确定说话者的状况。