Passive audio ear filters with multiple filter elements
First Claim
Patent Images
1. A passive acoustical filter to be coupled between an ambient and an ear of a listener, comprising:
- a high-pass filter element; and
a series combination of two low-pass filter elements in parallel with the high-pass filter element.
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Abstract
There is disclosed a passive acoustical filter including two or more filter elements coupled between an ambient and a listener'"'"'s ear, each of the filter elements selected from the group consisting of a low pass filter element, a high pass filter element, a band reject filter element, and a band pass filter element.
45 Citations
12 Claims
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1. A passive acoustical filter to be coupled between an ambient and an ear of a listener, comprising:
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a high-pass filter element; and a series combination of two low-pass filter elements in parallel with the high-pass filter element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification