Hi,
a
true NR system implemented in software is capable of "intelligently
manipulating" noise and signal in a way that can not be detected on a scope
You will never see this
manipulatiuon on a scope no matter how hard you try.
Depends how and where you you connect the scope, and how you use the
scope. If you monitor an analog audio signal before digitization and
also after the DSP NR when it is analog audio again, using X/Y mode on
the scope, you can see it. If you see nothing but a straight diagonal
line, then the DSP NR is doing absolutely nothing. If you see other than
a straight diagonal line, then there could be any number of things going
on, some of them not requiring DSP at all, but rather just plain old
analog tone controls, limiting or phase shift. Even if you don't have a
perfectly straight diagonal line with the NR turned off, you should be
able to discern a difference between NR on and off, using a scope this
way, or by ear. If no difference is discernible by ear, why use it?
Using a scope in X/Y mode to see the NR action is only applicable in
systems that have audio in and audio out of the NR. Since the Orion has
IF into the DSP and audio out, you cannot do this.
DE N6KB
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