evdplancke;686692 Wrote: > > > 1) Why does some Ethernet cables have different throughput? Is this not > related to the noise they are carrying on? What happens to this noise > when it reaches the Touch? Can't he interfere in any way with the > perfectly reconstucted signal in the signal path between the input > buffer and the digital output?
Different cables have different ratings because they vary in materials and construction. High thru-put cables are not straight wires. They have very intricate loop-backs. This is done to allow smaller wires to carry high frequency signals without extensive cross-talk. Just take one apart to verify this. TCP/IP used to go only 10Mbs. As faster speeds were codified, wires had to get better. A Cat 4 cable may be able to carry 100Mbs a short distance but at longer distances physics steps in and retry rates limit thru-put. To carry TCP/IP at the highest speeds (and the distances set out in the specifications,) more carefully designed cable is necessary. "Noise" is an analog term. Since the derived data is digital, "noise" on the line is irrelevant. See #2.> > > 2) Doesn't packet loss and retransmission, packet jitter, packet size, > round trip delay,... cause CPU load that can in turn potentially cause > interferences with the perfectly reconstucted signal in the same signal > path? No. Parity testing/reconstruction/request for retransmit operations are done in the NIC (network interface card.) The CPU doesn't know anything about it. When your O/S displays packet statistics, it has just asked the network card how things are going. > The one who can give perfect and scientific answers to these questions > can wisely claim that bit perfect data means perfect signal output. The > others, if they think they are wise, should rather keep quiet... or > experiment to see if they can find some factual evidence to sustain > their claims. So, yes, bit perfect data does means the data that left the one end is the exact data received at the other. p -- pski real stereo doesn't just wake the neighbors, it -enrages- them.. It is truly the Golden Age of Wireless ------------------------------------------------------------------------ pski's Profile: http://forums.slimdevices.com/member.php?userid=15574 View this thread: http://forums.slimdevices.com/showthread.php?t=93257 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/audiophiles
