Ronny wrote on Sat, 30 July 2005 07:04 |
Higher fs does not mean that the signal travels twice as fast as the halved sample rate, only that it's being sampled twice "as much", all frequencies travel at the same rate, although not the same energy. If freq's traveled at different speeds all your ears would hear would be beat frequencies and harmonic structure would be nigh impossilbe to capture and reproduce. I guess we'll just have to disagree on this one, Brad.
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No, you simply don't understand what I'm saying.
It's a
fact that higher fs means that data is crossing the zero point at a faster rate in any given period of time. That's what sampling frequency means, Ronny - that in one second period of time, you have 96k sampled versus 44.1k samples. The greater number of samples means that you have more instances of zero crossings in any given time period - hence the term 'faster'.
No one is suggesting that the actual signal travels faster through the wire, but higher sampling frequencies means that the signal appears 'faster' to the receiver chip (not faster from point to point, but the number of zero crossings/given time period), and the impedance can definitely have an impact on higher freqs...