audioengr
Member of the Trade: Empirical Audio
- Joined
- Aug 15, 2004
- Posts
- 1,092
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- 17
Quote:
Errors? Seems to me that the error rate would have to be quite high in order to actually make it audible.
One way to test this theory would be to use a very short USB cable and a long one of the same type. If it is errors, then the shorter one should sound better. I have tried this with my own USB interfaces and they sound identical to me.
I was just reading an add from a company that is selling USB output connectors for computers and laptops that have integral filtering. This could be bad news for audio streaming given the negative effects of ferrites on some USB cables.
Steve N.
Originally Posted by Crowbar /img/forum/go_quote.gif Well, such claims are good business Of course, the truth is not exactly simple, and the possibility for the cable to make a difference exists. Let me explain: USB Audio uses a mode that, unlike the rest of USB does _not_ use error correction, so in some systems it might be possible to get an error rate that is noticeable. Gordon from Wavelength told me that in his final products he was getting no errors, so it's likely to be a non-issue with most setups. In my case, I thought I was getting some errors but the way I was checking turned out not robust, so I'm going to repeat this as soon as the redesign of the USB chip->DSP link is done. |
Errors? Seems to me that the error rate would have to be quite high in order to actually make it audible.
One way to test this theory would be to use a very short USB cable and a long one of the same type. If it is errors, then the shorter one should sound better. I have tried this with my own USB interfaces and they sound identical to me.
I was just reading an add from a company that is selling USB output connectors for computers and laptops that have integral filtering. This could be bad news for audio streaming given the negative effects of ferrites on some USB cables.
Steve N.