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US 7,466,838 B1Granted
Electroacoustic devices with noise-reducing capability
AssigneeWilliam T. Moseley
InventorWilliam T. Moseley
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AssigneeWilliam T. Moseley
InventorWilliam T. Moseley
Estimating the term…
New and improved electroacoustic devices each including at least one transducer assembly having one or more microphones typically mounted on a baffle plate and disposed in substantially the same acoustic plane as a speaker or speakers. In the various embodiments, at least one microphone and at least one speaker face the same or opposite directions. Each microphone may be parallel to or oriented at an angle with respect to the speaker. In other embodiments, the speaker includes a central opening or cavity in which a microphone having one of various orientations is provided. The orientations of the microphone or microphones with respect to the speaker or speakers minimize adverse noise reduction effects associated with the differences in sensitivities, frequency responses and phase responses and acoustic time delays between the microphones and the speaker or speakers, as well as minimize sound reflections that are picked up by the microphone or microphones.
An electroacoustic device having at least one transducer assembly comprising:
An electroacoustic device having at least one transducer assembly comprising:
A method for minimizing undesirable noise reduction acoustic properties associated with differences in at least one of sensitivity, frequency response, and phase response or acoustic time delay between a microphone and a speaker in a transducer assembly, the method comprising orienting the microphone face generally toward an adjacent surface to minimize direct sound reflections that originate from the speaker and are received by the microphone from at least one of an inner or outer cavity of the transducer assembly.
Dependencies are inferred from the claim text.