Electrical audio signal processing systems and devices – Monitoring of sound
Patent
1992-02-14
1993-08-24
Isen, Forester W.
Electrical audio signal processing systems and devices
Monitoring of sound
360 5, 369 19, 34030915, 340573, 381122, 381124, H04R 2900
Patent
active
052395871
ABSTRACT:
The present invention provides for the unattended recording of game animal sound activities in hunting areas by combining an external microphone and a sound recording apparatus housed within a weather resistent case. The sound recording apparatus includes a high gain amplifier so that sounds over a wide geographic area may be detected. The output of the high gain amplifier is fed into a standard cassette tape recorder. The entire apparatus is provided with a digital clock and means for taking the output of the digital clock and turning the apparatus on and off at selected time intervals in order to take a sample of sound activity over an extended time interval without requiring the hunter to spend an excessively lengthy amount of time in reviewing the recorded sounds.
REFERENCES:
patent: 4562590 (1985-12-01), DeLage
patent: 4807051 (1989-02-01), Ogura
patent: 4819101 (1989-04-01), Lemelson
patent: 4876721 (1989-10-01), Kerr et al.
patent: 4884064 (1989-11-01), Meehan
patent: 5146353 (1992-09-01), Isoguchi et al.
Cox, Jr. Ray F.
Isen Forester W.
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