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US 2005/0238181 A1Published application
Hearing protector
OwnerSigvard Nilsson, Henrik Nordininventors
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Abstract
A hearing protector device is provided including a sound attenuating body and an electronic unit having a microphone, an amplifier, and a loudspeaker, where the electronic unit is selectively activated and, when activated, receives sound from an ambient environment, amplifies a frequency range of the received sound corresponding to a frequency range of human speech, and varies said amplification such that a total level of sound passing through the body and through the electronic unit does not exceed a maximum predetermined sound level.
Claims18
A hearing protector comprising:
- a hearing hood with passive noise damping;
- a microphone disposed exteriorly on the hearing protector;
- a loudspeaker disposed inside the hood;
- and
- an amplifier for amplifying sound signals caught by the microphone and passing the signals on to the loudspeaker;
- wherein
- the noise damping of the hearing hood is broad-band,
- the amplifier has variable amplification and frequency range which corresponds to the frequency range of human speech, and
- the amplifier has a maximum predetermined amplification where the sum total of the sound levels that are caused, on the one hand by ambient sound passing through the hood, and on the other hand by sound emitted by the loudspeaker, amounts to a maximum predetermined value.
6 more elements
A hearing protector device, comprising:
- a sound attenuating body;
- and
- an electronic unit having a microphone, an amplifier, and a loudspeaker;
- wherein the electronic unit is selectively activated and, when activated, receives sound from an ambient environment, amplifies a frequency range of the received sound corresponding to a frequency range of human speech, and varies said amplification such that a total level of sound passing through the body and through the electronic unit does not exceed a maximum predetermined sound level.
1 more element
Dependencies are inferred from the claim text.