Microphone plosive effects reduction techniques
First Claim
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1. In a microphone for generating an electrical audio signal corresponding to speech of a user;
- improved apparatus for reducing distortion of said audio signal due to wind or plosive sounds emitted by the user comprising in combination;
a microphone cartridge for generating said audio signal, said cartridge defining a perimeter, a front entry, a rear entry, a central axis generally perpendicular to said front entry and said rear entry and a cylinder generally contiguous with said perimeter having a longitudinal axis collinear with said central axis;
first means for defining a first acoustical path to said rear entry through said cylinder having an acoustical first resistance;
second means for defining a second acoustical path to said front entry through said cylinder having an acoustical second resistance;
third means for defining a second acoustical path to said front entry along said central axis having an acoustical third resistance greater than said first resistance and greater than said second resistance, whereby distortion of said audio signal is reduced, said first means, second means and third means comprising integrally formed porous material.
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Abstract
A microphone for reducing distortion of an audio signal due to wind or plosive sounds emitted by a user, including a microphone cartridge defining a central axis and a cylinder contiguous with the perimeter of the cartridge. A windscreen defines first, second and third acoustical paths. The first and second paths are through the side of the windscreen and the third path is along the axis of the windscreen. The third path has an acoustical resistance greater than the first or second paths. The second path has an acoustical resistance greater than the first path.
26 Citations
17 Claims
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1. In a microphone for generating an electrical audio signal corresponding to speech of a user;
- improved apparatus for reducing distortion of said audio signal due to wind or plosive sounds emitted by the user comprising in combination;
a microphone cartridge for generating said audio signal, said cartridge defining a perimeter, a front entry, a rear entry, a central axis generally perpendicular to said front entry and said rear entry and a cylinder generally contiguous with said perimeter having a longitudinal axis collinear with said central axis; first means for defining a first acoustical path to said rear entry through said cylinder having an acoustical first resistance; second means for defining a second acoustical path to said front entry through said cylinder having an acoustical second resistance; third means for defining a second acoustical path to said front entry along said central axis having an acoustical third resistance greater than said first resistance and greater than said second resistance, whereby distortion of said audio signal is reduced, said first means, second means and third means comprising integrally formed porous material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- improved apparatus for reducing distortion of said audio signal due to wind or plosive sounds emitted by the user comprising in combination;
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15. A method for reducing distortion in a microphone for generating an electrical audio signal corresponding to speech of a user due to wind or plosive sounds emitted by the user wherein said microphone includes a microphone cartridge for generating said audio signal, said cartridge defining a perimeter, a front entry, a rear entry, a central axis generally perpendicular to said front entry and said rear entry and a cylinder generally contiguous with said perimeter having a longitudinal axis collinear with said central axis comprising the steps of
providing a first acoustical path to said rear entry through said cylinder having an acoustical first resistance; -
providing a second acoustical path to said front entry through said cylinder having an acoustical second resistance; providing a third acoustical path to said front entry along said central axis having an acoustical third resistance greater than said first resistance and greater than said second resistance; and acoustically coupling said front entry with said rear entry by coupling means that are integrally formed within said cartridge of rigid formed porous material, whereby distortion of said audio signal is reduced. - View Dependent Claims (16, 17)
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Specification