At 3/6/2006 01:52 PM, you wrote:
>Wouldn't the SINAD be the distance between the 1kHz tone "Spike" and
>the noise "Grass"?
I assume you mean distance in amplitude.
Not quite. I think the noise would have to be summed over all frequencies,
including any harmonics of the 1 kHz that get generated as a result of
distortion in the RX. Since each frequency "bin" in the FFT represents a
voltage, each value may have to be squared first, then square root the
result. That is the part I always have trouble with when doing statistical
math on signals.
Bob NO6B
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/
<*> To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
