The creator, Andre Wiethoff, isn't in it for the money. I suggest to use a program like exact audio copy. (I also ripped some of my more obscure vinyl records for this reason. Just rip your CD collection to FLAC and you don't have to worry about jitter your vintage CD player might output via SPDIF (TOSLINK/COAX) This is also a good way to keep your CDs in "mint" condition. It's relatively easy to keep out any external RF that would impact performance especially in most DACS where high impedance nodes connected to long traces and wres simply do not exist. On the home side, the RF environment is relatively benign with most signals high frequency and spread spectrum.
#Perfecttunes not playing dupes professional
On the professional side, two signals + shield of course eliminates any concern of grounding a shield impacting a signal. Wrt EMC susceptibility, SPDIF is a relatively low frequency connection so even the most rudimentary of filtering will keep out any likely RF. Keep in mind the coax ground is no different from an emissions standpoint than the often DC power input with often an unshielded no twist cable. The bandwidth for SPDIF is 30Mhz low on the SPDIF. On the receiving end, you can capacitively couple the shield to case with a small capacitance to eliminate RF, and get the side benefit of shunting the aforementioned common mode noise to ground.Ĭonsidering I spent decades actually developing commercial products the only thing naive is your comment.Įmissions in most audio products is rarely an issue even with processors and switch mode power supplies and not grounding the BNC to the case is not going to change that. On the transmitting end, there is no reason of course not to ground the BNC. You are also bringing in a very small piece of metal which only is an effective antenna at very high frequencies. "RF holes", while that may be the case, it only needs to be the case at one end.
Not saying it can't happen, but it is what would have to happen.Ī far worse issue with galvanic isolation is data induced jitter. Further, that 100Mhz noise would have to form a beat frequency with the underlying clock transitions to generate noise below the PLL cut-off. I can also use supplementary common mode filtering. Yes, 15pF will be 100 ohms at 100MHz, but how many 100MHz sources of noise do you have that will induce even small amounts of common mode voltage? That common mode noise voltage will also need to present as a differential voltage at the receiver input where there is invariably a capacitor to shunt just such noise to ground. Admittedly I am having trouble "unwrapping" what you wrote.
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