Method for high-pass filtering for echo processing in time...

Details Method for high-pass filtering for echo processing in time... Method for high-pass filtering for echo processing in time...

2005-04-26

2005-04-26

Pihulic, Daniel (Department: 3662)

Communications, electrical: acoustic wave systems and devices

Echo systems

Returned signal used for control

Reexamination Certificate

active

06885611

ABSTRACT:
A method and system for high-pass filtering to remove DC and/or low frequency components of a receive signal from the transducer of a level measurement system. In one embodiment, the method includes generating a maximum signal profile and a minimum signal profile for the receive signal, generating a midpoint reference signal from the maximum and minimum signal profiles and subtracting the midpoint reference signal from the receive signal to produce a filtered signal.

REFERENCES:
patent: 20030033094 (2003-02-01), Huang

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