Circuit for echo and noise suppression of acoustic signals transmitted through a drill string
Patent
·
OSTI ID:5236189
An electronic circuit for digitally processing analog electrical signals produced by at least one acoustic transducer is presented. In a preferred embodiment of the present invention, a novel digital time delay circuit is utilized which employs an array of First-in-First-out (FiFo) microchips. Also, a bandpass filter is used at the input to this circuit for isolating drill string noise and eliminating high frequency output. 20 figures.
- DOE Contract Number:
- AC04-76DP00789
- Assignee:
- SNL; EDB-94-056665
- Patent Number(s):
- A; US 5274606
- Application Number:
- PPN: US 7-858170
- OSTI ID:
- 5236189
- Country of Publication:
- United States
- Language:
- English
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