Ambient noise cancellation for voice communication device
    6.
    发明申请
    Ambient noise cancellation for voice communication device 有权
    语音通信设备环境噪声消除

    公开(公告)号:US20060029212A1

    公开(公告)日:2006-02-09

    申请号:US11250035

    申请日:2005-10-13

    IPC分类号: H04M1/00

    摘要: A system and method for reducing or entirely canceling background or ambient noise from a voice transmission from a communications device. A communications device, such as a mobile telephone, is configured with an ambient noise compensation signal generator that is connected between a microphone and a mixer. The original output of the microphone and a compensation signal generated by the ambient noise compensation signal generator are mixed together prior to being passed to a transmitter. In one embodiment a buffer is provided between the microphone and the mixer to help synchronize the timing of the signals to be mixed. In another embodiment a second microphone is employed to detect ambient noise.

    摘要翻译: 一种用于从通信设备减少或完全消除来自语音传输的背景或环境噪声的系统和方法。 诸如移动电话的通信设备被配置有连接在麦克风和混频器之间的环境噪声补偿信号发生器。 麦克风的原始输出和由环境噪声补偿信号发生器产生的补偿信号在传送到发射机之前混合在一起。 在一个实施例中,在麦克风和混频器之间提供缓冲器以帮助同步要混合的信号的定时。 在另一个实施例中,使用第二麦克风来检测环境噪声。