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In Reply to: Re: Best Soundcard For SPDIF posted by Joe LG on October 21, 2004 at 17:20:28:
This sounds very interesting, I have never heard something like your setup before.What is this clock conditioner and how does it work?
How do you deal with lost packets and retransmissions on the USB bus?
Do you convert to S/PDIF from USB or do you have a DAC that works directly of USB?
Cheers
Thomas
Follow Ups:
There is no such thing as lost packets and retransmissions on USB.I think you are confusing this with Ethernet, which does do this.
Am I?Maybe I am just not understanding the relevant sections in the USB spec correctly? I understood
"A USB Host Controller will try a transmission that encounters errors up to three times before informing the client software of the failure"
to mean what I said in my posting.
http://www.usb.org/developers/docs/usb_20.zip
Am I misinterpreting this?
Cheers
Thomas
I've just checked this and you are correct and I have learned something!Apologies.
Hi,I am using an Apogee Big Ben as a clock conditioner. Had Steve Nugent of Empirical Audio do the modification for me. I think what he did was to attach a M-Audio transit USB audio device directly to the toslink of the Big Ben. So, the PC outputs USB data to USB input on the Big Ben. The Big Ben outputs SPDIF to my Audio Note DAC 1.1 kit.
Note very sure of the bit on "lost packets and retransmissions on the USB bus". What I do know is that buffer size (data packets ?) & latency does have some bearing on the playback on PC.
Regards,
Joe LG
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