Hello PSN;

I was sitting on my couch thinking about why
there seems to be a signal dead spot at resonance in my geophone.


It seems to me that the mass is moving in sympathy with the noise
at this frequency and producing little output.

Damping has little effect on this dead space at 0.7
since in sympathy there is no relative
motion to produce any damping.

Does anyone agree with this line of thought ?

Do you know how to eliminate this dead spot
or is it desirable to have ?

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