4khz的帶寬是指什麼意思_揚聲器和耳機的Hz-KHz範圍是什麼意思？

4khz的帶寬是指什麼意思 If you’ve looked at high-end headphones or speakers, you’ve probably noticed numbers on the spec sheet that read something like 「20Hz-20KHz.」 What do these numbers mean? 如果您看過高端耳機或揚聲器，則可

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