苏立华朋友，看了您几个推广DSD录音的帖子，我觉得有一点或许需要澄清一下。
关于DSD和PCM两种方式的保真度，其实是还没有统一结论的（最起码首先要看：待比较的两者分别是用多少的采样率）。因为两者都各自有优点和缺点。具体技术的细节就不在这里讨论了，网上可以找到很多很多这方面的专业资料。下面一段是从维基上转摘下来的：
There has been much controversy between proponents of DSD and PCM over which encoding system is superior. Professors Stanley Lipshitz and John Vanderkooy from the University of Waterloo, in Audio Engineering Society Convention Paper 5395 (2001), stated that 1-bit converters (as employed by DSD) are unsuitable for high-end applications due to their high distortion. Even 8-bit, four-times-oversampled PCM with noise shaping, proper dithering and half data rate of DSD has better noise floor and frequency response. However, in 2002, Philips has published a convention paper arguing against this in Convention Paper 5616. Lipshitz and Vanderkooy's paper has been criticized in detail by Professor James Angus at an Audio Engineering Society presentation Convention Paper 5619. Lipshitz and Vanderkooy responded in Convention Paper 5620.
假如有兴趣看这里面涉及到的文章的摘要，可以在这里找到链接：
http://en.wikipedia.org/wiki/Direct_Stream_Digital 
