Hearing protector
First Claim
Patent Images
1. 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.
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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.
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Citations
18 Claims
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1. A hearing protector comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A hearing protector device, comprising:
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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. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification