? 發問於 科學及數學生物學 · 1 十年前

點解鴨的叫聲是不會有回音的?

點解鴨的叫聲是不會有回音的?

1 個解答

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  • ?
    Lv 7
    1 十年前
    最愛解答

    鴨子其實不是沒有回音

    而是音頻的關係 他的回音我們聽不到

    他們有作實驗 有測出其實還是有回音的 但要用電腦才測的出來

    有沒有回音大概是環境的問題,而不是動物本身的叫聲有回音。還有就是也許一隻動物在叫,牠能同伴就立即了跟著叫,所以聽起來就像回音。

    英國史福大學(University of Salford)已經以實驗證明,鴨叫聲都會造成回音.

    以下為有研究人員對鴨叫聲傳說的假設成因:

    So a duck's quack certainly echoes around our reverberation chamber, so a duck's quack does echo. Which leads to the most interesting question, why did the myth arise? The are a few possible explanations that I can think of:

    The quack does echo, but it is usually too quiet to hear. When you want to hear an echo, you usually make a very loud noise to make sure the reflection can be heard. But a duck quacks too quietly, so the reflection is too quiet to hear.

    Ducks don't quack near reflecting surfaces. You need a large reflecting surface, a mountain or building for the sound to reflect off. Maybe ducks don't hang around reflecting surfaces.

    It is hard to hear the echo of a sound which fades in and fades out.

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