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    • 4. 发明申请
    • Motor operation noise elimination circuit of portable multimedia player
    • 便携式多媒体播放机的电机运行噪声消除电路
    • US20070041588A1
    • 2007-02-22
    • US11204992
    • 2005-08-17
    • Cheng-Li Lin
    • Cheng-Li Lin
    • A61F11/06G10K11/16H03B29/00
    • G11B20/24G11B20/10527G11B2020/10546
    • A motor operation noise elimination circuit of a portable multimedia player is provided, in which a first sound sensor is utilized to sense a first sound signal generated by motor operation during recording and a second sound signal input in the portable multimedia player for recording. Then the first sound signal sensed by the second sound sensor is phase-reversed in the noise elimination unit and is combined into the first and second sound signals sensed by the first sound sensor during recording, comprising: a second sound sensor, used to sense a first sound signal generated by the motor, and a noise elimination unit, used to receive the first and second sound signals sensed by the first sound sensor, and the first sound signal sensed by the second sound sensor, then a combination operation is executed, thus eliminating the first sound signal and outputting the second sound signal.
    • 提供了一种便携式多媒体播放器的电动机操作噪声消除电路,其中第一声音传感器用于感测在记录期间由电动机操作产生的第一声音信号和在便携式多媒体播放器中输入的第二声音信号进行记录。 然后,第二声音传感器感测到的第一声音信号在噪声消除单元中被相位反转,并且在记录期间被组合成由第一声音传感器感测的第一和第二声音信号,包括:第二声音传感器,用于感测 由电动机产生的第一声音信号和用于接收由第一声音传感器感测的第一和第二声音信号的噪声消除单元以及由第二声音传感器感测到的第一声音信号,则执行组合操作,因此 消除第一声音信号并输出​​第二声音信号。