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Volume 13 Number 3
  • E-ISSN: 1365-2478

Abstract

A

Electronic circuits are described which simulate the effects of galvanometers and geophones. By placing these circuits in the feedback loop of an operational amplifier it is possible to obtain transfer functions which are the inverse of those of the transducers. That is, they will remove the distortion on the signal which was produced by the geophone or the galvanometer.

Both a geophone simulator and its inverse filter have been built and used (O'Brien, 1965). The simulator is accurate over at least seven octaves and the inverse filter restores the ground signal to what it would have been if the recording geophone had had a natural frequency √n+1 times that of the actual geophone, where is the gain of the operational amplifier used in the circuit.

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2006-04-27
2024-04-28

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References

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  • Article Type: Research Article

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