引用
最初由 chaarr 发布
而MP3是直接切掉2-4Khz这个主要敏感频带以外的部分,虽然其他频带对于感音不是很重要,可少了2-4khz之外的频带,音质的下降是非常明显的。
just this line, shows u really know nothing about mp3 encoding process. 2-4k? that's for recording speach. not for music. had u ever tried lame encoder? know which parameter to control the bandwidth cutoff point? then tell me mp3 will cutoff at 4k.
BTW, it's amazing 320kpbs CBR mp3 can be at cd quality while it only handle 2-4k audio signal. what a great discovery by u.
double blind test: user has no any knowledge about the tested subject and test sequence. only thing they know is some test in progress. user's subjective idea will just cancel itself out.
the other thing, when u watch vcd, have u heard sound of 铜炮,火枪,火车汽笛? remember vcd is using mp3 internally.