Conditioning system for transducer signals

DETAILED DESCRIPTION Accordingly, it is an important object of the invention to provide a system interfaced between a signal line having a connected transducer and a receiving control logic circuit for improving the signal to noise ratio of the signal line as inputted to the control logic.
It is another object of the present invention to provide, as to the transducer signal, noise elimination within a spectrum extrinsic to a given bandpass, and noise reduction within a spectrum intrinsic to a given bandpass.
A further object of the present invention is to provide circuitry for changing the character of the relatively noisy analog-like transducer signal on the line to that of a digital-like signal.
Another further object of the present invention is to provide a circuit for filtering the transducer signal on the line for eliminating noise outside of the given filtering range.
Yet another object of the present invention is to provide a circuit for squaring the amplitude of the transducer signal on the line for accurately differentiating the signal from the noise embedded in the same frequency range as the signal.
A yet further object of the present invention is to provide a circuit that will output a temporal representative digital-like signal whenever the amplitude squared analog-like transducer signal on the line passes above or below a given threshold point in the circuit.
A yet another further object of the present invention is to provide a frequency sensitive microphone as a transducer.
In the preferred embodiment the conditioning system as described in the above objects comprises a transducer operative to output to an active bandpass filter, the filter in turn may serve a signal to be received by an amplitude squaring circuit, and finally the signal may be acted on by a threshold circuit operative to generate digital-like signals temporally representative of the inputted signal.