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基础为零的逗逼,你说的这个8bit,是DSD-Wide,那也是PCM,你懂吗
DSD-wide is PCM with noise shaping—and is sometimes disparagingly referred to as "PCM-narrow"—but has the added benefit of making DSP operations in the studio a great deal more practical. The main difference is that "DSD-wide" still retains 2.8224 MHz (64Fs) sampling frequency while the highest frequency in which PCM is being edited is 384 kHz (8Fs). The "DSD-wide" signal is down-converted to regular DSD for SACD mastering. As a result of this technique and other developments there are now a few digital audio workstations (DAWs) that operate, or can operate, in the DSD domain, notably Pyramix and some SADiE systems.
Digital eXtreme Definition (DXD)是一种原本为了编辑用DSD录制的高解析度录音而开发的数字音频格式,这种声音标准被应用在Super Audio CD(SACD)中。SACD上使用的1-bitDSD格式并不适合编辑,所以在母带录音阶段就必须使用像是DXD或者DSD-Wide这样的附加格式。在DSD采样率下(64fs,2.822MHz)与支持分层、平衡器和淡入淡出等编辑的DSD-Wide或者DSD Pure相比,DXD是一种在352.8kHz下采样的带有24-bit解析度(比红皮书用的16bits多8bits)的PCM信号——比红皮书CD的44.1kHz采样率高8倍。数据比率是每秒8.4672Mbit每声道——DSD64的三倍。DXD也支持大量基于PCM数字音频工作站的花样繁多的插件,比如Cubase,Logic,Digital Performer,等等。 |
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