Vehicle Accessory Microphone

• US 20070133827A1
• Filed: 10/09/2006
• Published: 06/14/2007
• Est. Priority Date: 11/19/1999
• Status: Active Grant

• Current Assignee: Alan Watson, G Poe, Robert Knapp, Robert Turnbull
• Original Assignee: Alan Watson, G Poe, Robert Knapp, Robert Turnbull
• Inventors: Turnbull, Robert, Watson, Alan, Poe, G., Knapp, Robert
• Granted Patent: US 7,443,988 B2
• Time in Patent Office: Days
• US Class Current: 381/122
• CPC Class Codes: B60R 11/0247 for microphones or earphones
• CPC Class Codes: B60R 2001/1284 with communication systems other than radio-receivers, e.g. keyless entry systems, navigation systems; with anti-collision systems
• CPC Class Codes: H04R 1/08 Mouthpieces; Microphones; Attachments therefor
• CPC Class Codes: H04R 1/342 for microphones
• CPC Class Codes: H04R 1/38 in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone
• CPC Class Codes: H04R 1/406 microphones
• CPC Class Codes: H04R 2499/13 Acoustic transducers and sound field adaptation in vehicles
• CPC Class Codes: H04R 3/005 for combining the signals of two or more microphones specially adapted for hearing aids H04R25/407

Abstract

A microphone includes one or more transducers positioned in a housing. Circuitry is coupled to the transducer for outputting an electrical signal such that the microphone has a main lobe directed forwardly and attenuates signals originating from the sides. The microphone transducers can advantageously include multiple transducers, which with the circuit produce a desired sensitivity pattern. The microphone can be employed in a vehicle accessory.

Claims

1. A vehicle accessory, comprising:

a housing;

at least one first transducer positioned in the housing;

at least one second transducer positioned in the housing, wherein the first and second transducers are positioned in spaced relation inside the housing; and

a circuit coupled to the first and second transducers for combining the output signal of the first and second transducers to produce an audio signal with a reduced noise component.