Electrical audio signal processing systems and devices – Hearing protectors – electrical
Patent
1987-07-01
1990-05-22
Isen, Forester W.
Electrical audio signal processing systems and devices
Hearing protectors, electrical
381 74, 330 2, A61F 1102
Patent
active
049283111
ABSTRACT:
A protective earmuff which transmits normal sound levels and clips higher amplitude sound levels by causing an amplifier to go into saturation when the input signal is greater than a preset amount. The sound is received by a microphone, amplified and transmitted to the ear of the user by a speaker. The output of volume level is controllable independently of the clipping level. Also disclosed is a circuit allowing user control of both the clipping level and the volume level independently.
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