Digital Audio名詞解釋

<span lang="EN-US">*Khz/ Hz: </span><span style="font-family: 新細明體;">常聽到</span><span lang="EN-US">CD</span><span style="font-family: 新細明體;">音質有</span><span lang="EN-US">44.1Khz</span><span style="font-family: 新細明體;">或</span><span lang="EN-US">44100hz,</span><span style="font-family: 新細明體;">代表聲音在一秒鐘內擁有</span><span lang="EN-US">44100</span><span style="font-family: 新細明體;">的等分層次</span><span lang="EN-US">!(</span><span style="font-family: 新細明體;">水平概念</span><span lang="EN-US">), </span><span style="font-family: 新細明體;">人類能分辨最高聲音約在</span><span lang="EN-US">44100hz</span><span style="font-family: 新細明體;">左右</span><span lang="EN-US">.</span><br /><div class="MsoNormal"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhZQcdzfjTIpvKPjgkPFn9-f0Mbd3iZzKvz4Kqx6rti1yKDYbVSR_phN1UwNZupnTlGcbO0whTrQnsAj-IgV_OPbirqSTrfn5sHqDkwIuSqO-IAKXQfAuRW_m0llKepTF0T2FBHS1IQhO4/s1600-h/khz.jpg"><img alt="" border="0" id="BLOGGER_PHOTO_ID_5150515079915788946" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhZQcdzfjTIpvKPjgkPFn9-f0Mbd3iZzKvz4Kqx6rti1yKDYbVSR_phN1UwNZupnTlGcbO0whTrQnsAj-IgV_OPbirqSTrfn5sHqDkwIuSqO-IAKXQfAuRW_m0llKepTF0T2FBHS1IQhO4/s320/khz.jpg" /></a></div><div class="MsoNormal"></div><div class="MsoNormal"><span lang="EN-US">*Mono/ Stereo: Mono</span><span style="font-family: 新細明體;">單聲道</span><span lang="EN-US">/ Stereo</span><span style="font-family: 新細明體;">立體聲</span><span lang="EN-US"><o:p></o:p></span></div><div class="MsoNormal"><span lang="EN-US">*Resolution /Bits: </span><span style="font-family: 新細明體;">指聲音從最大數位音量</span><span lang="EN-US">0dB</span><span style="font-family: 新細明體;">到最小數位音量</span><span lang="EN-US">-</span><span lang="EN-US">∞</span><span lang="EN-US">dB</span><span style="font-family: 新細明體;">音量變化層次階度</span><span lang="EN-US">.</span><span style="font-family: 新細明體;">所以</span><span lang="EN-US"> 8Bits</span><span style="font-family: 新細明體;">有</span><span lang="EN-US">256</span><span style="font-family: 新細明體;">階的音量變化</span><span lang="EN-US">, 16Bits65536</span><span style="font-family: 新細明體;">階的音量變化等等</span><span lang="EN-US">(</span><span style="font-family: 新細明體;">垂直概念</span><span lang="EN-US">). </span><span style="font-family: 新細明體;">每一個</span><span lang="EN-US">Bits</span><span style="font-family: 新細明體;">約佔有</span><span lang="EN-US">6dB</span><span style="font-family: 新細明體;">的動態範圍</span><span lang="EN-US">(dynamic range),</span><span style="font-family: 新細明體;">所以</span><span lang="EN-US">16Bits</span><span style="font-family: 新細明體;">有</span><span lang="EN-US">96dB</span><span style="font-family: 新細明體;">的動態範圍</span><span lang="EN-US">. </span><span style="font-family: 新細明體;">簡單的說在調整</span><span lang="EN-US">16Bits</span><span style="font-family: 新細明體;">的實際音量約有</span><span lang="EN-US">96</span><span style="font-family: 新細明體;">個刻度可供調整</span><span lang="EN-US">. </span><span style="font-family: 新細明體;">以此類推</span><span lang="EN-US">8Bits</span><span style="font-family: 新細明體;">有</span><span lang="EN-US">48</span><span style="font-family: 新細明體;">個刻度音量調整</span><span lang="EN-US">, 32Bits</span><span style="font-family: 新細明體;">有</span><span lang="EN-US">192</span><span style="font-family: 新細明體;">個刻度音量調整</span><span lang="EN-US">, </span><span style="font-family: 新細明體;">所以在數位錄音時建議使用</span><span lang="EN-US">32Bits</span><span style="font-family: 新細明體;">以確保最佳數位音訊</span><span lang="EN-US">.<o:p></o:p></span></div><div class="MsoNormal"><span lang="EN-US">*Bpm : beat per minute, </span><span style="font-family: 新細明體;">每分鐘所打的拍子速度</span><span lang="EN-US"><o:p></o:p></span></div><span lang="EN-US" style="font-family: "Times New Roman"; font-size: 12pt;">*dB : Decibels/ </span><span style="font-family: 新細明體; font-size: 12pt;">分貝</span><span lang="EN-US" style="font-family: "Times New Roman"; font-size: 12pt;">, </span><span style="font-family: 新細明體; font-size: 12pt;">計算聲音的基本單位</span><span lang="EN-US" style="font-family: "Times New Roman"; font-size: 12pt;">(</span><span style="font-family: 新細明體; font-size: 12pt;">以數位錄音來說</span><span lang="EN-US" style="font-family: "Times New Roman"; font-size: 12pt;">0dB</span><span style="font-family: 新細明體; font-size: 12pt;">是代表最大聲</span><span lang="EN-US" style="font-family: "Times New Roman"; font-size: 12pt;">, -1dB/ -2dB/ -3dB…</span><span style="font-family: 新細明體; font-size: 12pt;">聲音逐漸減弱</span><span lang="EN-US" style="font-family: "Times New Roman"; font-size: 12pt;">, </span><span style="font-family: 新細明體; font-size: 12pt;">負∞<span lang="EN-US">db</span></span><span style="font-family: 新細明體; font-size: 12pt;">代表完全無聲境界</span><span lang="EN-US" style="font-family: "Times New Roman"; font-size: 12pt;">)</span>

Digital Audio名詞解釋

*Khz/ Hz: 常聽到CD音質有44.1Khz或44100hz,代表聲音在一秒鐘內擁有44100的等分層次!(水平概念), 人類能分辨最高聲音約在44100hz左右.*Mono/ Stereo: Mono單聲道/ Stereo立體聲*Resolution /Bits: 指聲音從最大數位音量0dB到最小數位音量-∞dB音量變化層次階度.所以 8Bits有256階的音量變化, 16Bits65536階的音量變化等等(垂直概念). 每一個Bits約佔有6dB的動態範圍(dynamic range),所以16Bits有96dB的動態範圍. 簡單的說在調整16Bits的實際音量約有96個刻度可供調整…

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