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普通物音はたくさんの音波が組み合わさってできてます。どう振動数や音階を定義すればいいのでしょうか?また実際私たちは音の高低を判断してるということは人間の 耳にはフーリエ変換の機能でもあるのでしょうか? - Quora
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