• ƹĵ
    20Hz-40Hzʵʱǿܿġܷٺͱ˾ʹֱûDz塣

        40Hz-150HzĻݣռƵ70%DZַҪɷݡ

        ʵʱųڵˣͣʱ150Hzʱʹƣ½ǿ

        е150Hz-500HzĽṹ֣λλãʱݳᱻûʵʱеȺȡʱʹӲ300Hz3-6dBټϻ죬Ӱȡ

        500Hz-2KHzĵʹгͷСĺʹʵʱ͸ʱʡʱƵ绰

        и2KHz-5KHzֵֵĹҵĦֵָҵijʱĴ͸½ǿʱڱڵʶ

        7KHz-8KHzӰθеƵʡʹ̵ѡͻԵijغɫë

        8KHz-10KHzʱĽͨ͸ʸߣɳӵĽɱ档ʹȻջٸƵԪ

    ʱ䣺2010-10-29       1236      Դ
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