|
|
发表于 2015-10-26 13:21:05
|
显示全部楼层
本帖最后由 e3po 于 2015-10-25 21:34 编辑
国外这个论坛上也有个比较热烈的讨论：
http://forums.slimdevices.com/sh ... -type-of-connection
借用 cliveb 的话如下：
2015-09-23, 01:57 #5
cliveb cliveb is offline
Senior Member
Ralph, a more pertinent set of questions would be:
a). how much jitter is required to actually cause an audible difference?
b). what types of (non-broken) connection can causes that amount of jitter?
The answers to these questions are:
a). Surprisingly high. Two well-known properly conducted trials are:
Benjamin & Gannon.
Theoretical and audible effects of jitter on digital audio quality.
105th AES Convention, 1998
Jitter added to digital signal between transport and DAC with a hardware device.
Conclusions: uncorrelated jitter inaudible below 10nS rms on pure tones;
uncorrelated jitter inaudible below 20nS rms on music signal
Ashihara, Kiryu et al.
Detection threshold for distortions due to jitter on digital audio.
Acoust. Sci. & Tech. 26, 1 (2005)
Jitter simulated in the digital domain.
Conclusions: uncorrelated jitter inaudible below 250nS on music signal.
b). None.
So in summary, you don't need to worry about what connection type you use as far as jitter is concerned. Or rather, you don't need to worry about jitter at all. It's not the bogeyman that the audiophile community like to think it is.
正如同前边引述 YAMAHA 的结论一样， 正常的音乐播放中， 10纳秒的 Jitter 都是很难被人类听出来的。 |
|
[复制链接]
IP卡
狗仔卡
发表于 2015-9-9 01:14:11
显身卡
这有什么关系，就算没有什么抖晃，难道喇叭放音的时候纸盆没有因为惯性而滞后吗？或者因为弹性而超前吗？抖晃就象往大海里扔进一粒砂子，所激起的涟猗和波浪相比完全可以忽略不计。－－－－－我瞎想的。
