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Master Member
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取樣頻率跟震動頻率不一樣... 雖然單位都是一秒幾次(Hz)
取樣頻率就像是, 一秒鐘內檢查這個音軌幾次
在紙上畫一個波浪, 這就像是聲波, 畫一條水平的線穿過那個波浪, 然後找出波浪與水平線交叉的點, 以該處為起點沿著波浪移動, 應該會到達頂點然後下降穿過水平線, 來到最低點, 在上升到水平線. 這一個動作就是一個 赫茲 (Hz)
一般常說的 20Hz~20KHz, 就是一秒鐘內有 20~20KHz 這種動作
現在以垂直的方向畫數條直線, 假設這個波浪的總長度是 1 秒鐘, 你畫幾條直線就是取樣頻率 xx Hz
為何取樣頻率重要? 你試著把哪幾條直線跟波浪交叉的點連起來, 這條折線多少會有點像那個波浪, 但是不會一樣, 取樣的次數越多, 就越像原本的聲波
兩個結果來看, 如果取樣頻率過低, 會錯過許多頂點與低點, 播放時就會失真
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Cain was the first man ever to strike down another... and when the Lord came to him and said ‘What have you done!?’, Cain could not hide his crime. For the voice of his brother’s blood cried out from the very ground
The world has been your battlefield, everywhere you go. The blood of brothers and sons screams out against you. Perhaps you cannot yet hear it, because the soil is not your own, but you will... you will
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