The relationship only exists because of the physical nature of how
those two sensors on the sides of our head work. The distinction
between audio and not-audio is irrelevant in this situation. As
someone else pointed out, the difference has to do with definition of
baseband frequency for the DSP IF. There's no relationship to what
happens in the 14Khz IF system (pre-detection) to "audio" DSP.
A dog can nearly hear a 50Khz IF signal, so following the "it's audio"
logic, I guess we could say a drake 2-B has a linear "doggie audio"
IF? :-)
Grant/NQ5T
> Well, I think you guys are both right.
>
> The DSP operates ahead of the audio stage, and thus can be called IF.
>
> Of course, the frequency of 14 khz is certainly in the audio range.
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