>I clanked some keys together, compressed and then rapidly released a
>pair of tweezers, etc. I was able to hear the actual audio from these
>objects, but the audio quality was absolutely terrible. There was too
>much bass in the audio and the audio was terribly distorted.

>My question is this: what could I connect to the radars earphone
>output that would reduce the exaggerated bass frequencies, and also
>clean up the audios tremendous distortion?

>I clanked some keys together, compressed and then rapidly released a
>pair of tweezers, etc. I was able to hear the actual audio from these
>objects, but the audio quality was absolutely terrible. There was too
>much bass in the audio and the audio was terribly distorted.

>My question is this: what could I connect to the radars earphone
>output that would reduce the exaggerated bass frequencies, and also
>clean up the audios tremendous distortion?

> >I have one of those cheap Ramsey personal speed radars and was playing
> >around with it pointing it at a fan and watching the speed display
> >numbers rapidly change back and forth, when it occurred to me to
> >connect a pair of headphones to the radars earphone output to see what
> >I would hear. I could hear the fans blades rotating! I then set the
> >unit down on a table and started trying to "hear" different objects.

> >I clanked some keys together, compressed and then rapidly released a
> >pair of tweezers, etc. I was able to hear the actual audio from these
> >objects, but the audio quality was absolutely terrible. There was too
> >much bass in the audio and the audio was terribly distorted.

> >My question is this: what could I connect to the radars earphone
> >output that would reduce the exaggerated bass frequencies, and also
> >clean up the audios tremendous distortion?

> These Doppler RADAR devices give an output signal that is identical
> whether the target is coming or going. This means that the output, in
> audio terms, is full-wave rectified, and as you say very distorted.
> There is no way round this that I can think of. The bass heaviness is
> due to the integration effect of a frequency modulated signal going
> through a phase detector. A 6dB per octave filter will take care of
> this. You will never get good results, though, because the very
> considerable phase noise of the oscillator is converted down into the
> audio band by the detector.

> d

> _____________________________
> Telecommunications consultant
> http://www.pearce.uk.com