DESCRIPTION:

The invention consists of a miniature microphone diaphragm having a response that is highly dependent on the direction of the incident sound. A primary advantage of this invention over existing approaches is that this concept enables the fabrication of a single, miniature microphone diaphragm that achieves a second-order (or higher-order) directional response. This invention will lead to the development of highly innovative microphones that have far greater directionality, better sensitivity, wider frequency response, and lower noise than is achievable with current technology.

POTENTIAL APPLICATIONS:

Any application in which a miniaturized microphone and signal processing technology could improve the utility and performance of a product. A variety of applications are currently being investigated under a multi-year DARPA award. Envisioned applications include manufacturing of next-generation hearing aids, security devices, cell phones and teleconferencing equipment.

ADVANTAGES:

As indicated, the disclosed invention provides the means for design and construction of highly innovative miniature microphones that have far greater directionality, better sensitivity, wider frequency response, and lower noise than is achievable with current technology. Also, preliminary analysis of silicon microfabrication issues suggest that that the microphone diaphragms can be manufactured in an appropriately cost-effective manner

DISADVANTAGES:

None known or disclosed by the inventors at this time.

PATENT STATUS:

Patent (U.S. Patent #6963653; Application # 10/691,059 Filing Date: 11/08/05)