Disclosed is an acoustic device comprising an enclosed housing defining an inner volume and having a front and a back; an acoustic port penetrating the front of the enclosed housing; a first and second sense structure attached to the inside of the housing and defining a gap between the first and second sense structures; a front volume defined by the portion of the inner volume between the first sense structure and the front of the housing; a back volume defined by the portion of the inner volume between the second sense structure and the back of the housing; and at least one vent in the first sense structure operatively connecting the front volume and the gap, wherein the acoustic device has a cutoff frequency above approximately 100 Hz.
Epitaxial Silicon Cmos-Mems Microphones And Method For Manufacturing
Brett M. Diamond - Pittsburgh PA, US Franz Laermer - Weil der Stadt, DE Andrew J. Doller - Sharpsburg PA, US Michael J. Daley - Canonsburg PA, US Phillip Sean Stetson - Wexford PA, US John M. Muza - Venetia PA, US
Assignee:
Robert Bosch GmbH - Stuttgart
International Classification:
H01L 21/339
US Classification:
438166, 438486, 257415
Abstract:
A method of manufacturing a microphone using epitaxially grown silicon. A monolithic wafer structure is provided. A wafer surface of the structure includes poly-crystalline silicon in a first horizontal region and mono-crystalline silicon in a second horizontal region surrounding a perimeter of the first horizontal region. A hybrid silicon layer is epitaxially deposited on the wafer surface. Portions of the hybrid silicon layer that contact the poly-crystalline silicon use the poly-crystalline silicon as a seed material and portions that contact the mono-crystalline silicon use the mono-crystalline silicon as a seed material. As such, the hybrid silicon layer includes both mono-crystalline silicon and poly-crystalline silicon in the same layer of the same wafer structure. A CMOS/membrane layer is then deposited on top of the hybrid silicon layer.
Preventing Electrostatic Pull-In In Capacitive Devices
A microphone system including an audio sensor with a first electrode and a second electrode. A voltage source is coupled to the first electrode and the second electrode. A high-impedance bias network is coupled between the voltage source and the first electrode of the audio sensor. Additional electronics operate based on a state of the first electrode of the electromechanical device. A feedback system is configured to maintain an electrical potential across the high-impedance bias network at approximately zero volts. Maintaining the electrical potential across the high-impedance bias network at approximately zero volts reduces the tendency of electrostatic pull-in occurring.
Andrew J. Doller - Sharpsburg PA, US Michael J. Daley - Canonsburg PA, US
Assignee:
ROBERT BOSCH GMBH - Stuttgart
International Classification:
H04R 9/08
US Classification:
381368, 381361
Abstract:
A microphone with an offset acoustic channel. The microphone includes an external case, an acoustic chamber enclosure within the external case, a microphone transducer positioned within the acoustic chamber enclosure, and a gasket positioned between the external case and the acoustic chamber enclosure. A first opening in the external case is positioned an offset lateral distance from a second opening in the acoustic chamber enclosure. An acoustic channel is formed in the gasket extending from the first opening to the second opening along the offset lateral distance.
A speaker. The speaker includes a housing, a first electrode, a second electrode, and a diaphragm. The housing has a first end, the first end which includes an acoustic aperture. The first electrode is positioned in the housing a first distance from the first end, and is biased to a first voltage. The second electrode is positioned in the housing a second distance, which is greater than the first distance, from the first end. The second electrode is biased to a second voltage. The diaphragm is positioned in the housing between the first electrode and the second electrode, and is biased to a third voltage. The speaker includes a valve. The valve opens when the diaphragm is moving away from the first end and closes when the diaphragm is stationary or moving toward the first end. When the valve is closed, the diaphragm forms an air-tight seal between the first end and the second electrode.
Digital Acoustic Low Frequency Response Control For Mems Microphones
- Stuttgart, DE Philip Sean Stetson - Wexford PA, US Michael James Daley - Canonsburg PA, US Davin Luther Yuknis - Wexford PA, US Joseph R. Fitzgerald - San Diego CA, US
Assignee:
Robert Bosch GmbH - Stuttgart
International Classification:
H04R 23/00
US Classification:
381174
Abstract:
A system and method for controlling and adjusting a low-frequency response of a MEMS microphone. The system comprising the MEMS microphone, a controller, and a memory. The MEMS microphone includes a membrane and a plurality of air vents. The membrane configured such that acoustic pressures acting on the membrane cause movement of the membrane. The plurality of air vents are positioned proximate to the membrane. Each air vent of the plurality of air vents are configured to be selectively positioned in an open position or a closed position. The controller determines an integer number of air vents to be placed in the closed positioned, and generate a signal that causes the integer number of air vents to be placed in the closed position and causes any remaining air vents to be placed in the open position.
The City of Seattle-City Light Department Electric Services · Land/Mineral/Wildlife Conservation · Regulation/Administrative Utilities · Public Utilities · Public Finance/Taxation/Monetary Policy · City Government · General Government · Management Services Police Protection
2066843200, 2066840264, 2066840633, 2066843000
Michael Daley
DP INFO TECH, LLC
Michael Daley
DALEYTECH, LLC
Michael P. Daley
DALEY CHIROPRACTIC, HEALTHCARE CLINIC, LC
Michael D Daley Treasurer
GREER TILE INC Tile/Marble Contractor
153 Courtney Ml Rd, Pittsburgh, PA 15229 Joan R Greer, Pittsburgh, PA 15229 2474 Cortland Dr, Pittsburgh, PA 15229 4127663591
Dr. Daley graduated from the Georgetown University School of Medicine in 1979. He works in Westborough, MA and specializes in Pediatrics. Dr. Daley is affiliated with St Vincent Hospital.
Dr. Daley graduated from the Medical University of South Carolina College of Medicine in 1978. He works in Pinehurst, NC and specializes in Internal Medicine. Dr. Daley is affiliated with FirstHealth Of The Carolinas Moore Regional Hospital.
Daley Chiropractic Healthcare Clinic, LLC. - CEO (2013)
Education:
University of Akron - Biology/Chemistry, Parker College of Chiropractic - Chiropractic
Michael Daley
Work:
InfoUSA
Education:
University of Bellevue - Managerial Communications
Michael Daley
Work:
Genentech (2005)
Michael Daley
Work:
University of Michigan (2007)
Michael Daley
Work:
Scotiabank Saddledome - Station Supervisor (2008)
Michael Daley
Work:
Mike Daley Tennis - Owner
Tagline:
Mike Daley has worked with all levels of tournament players, from local and regional to national junior level (4 USA top ten juniors including the No.1 junior) He has also worked with high ranking ITF Juniors (4 boys in the top 50)He currently works with Davis cup players from several nations, as well as ATP top 100 players.
Michael Daley, director of ArtWatch UK, an independent watchdog for art conservation, said: The Bosch scheme sounds eminently feasible technically. Every work of art from drawings and prints to paintings and sculptures is a manufactured object and no matter how skilfully an intended facsimile m
Date: Jan 27, 2024
Category: Technology
Source: Google
US has over 700 trees per person but the Earth needs more
Another major consequence that takes place due to deforestation in climate change. Deforestation is considered to be one of the contributing factors to global climate change, says Michael Daley, associate professor of environmental science at Lasell College in Newton, Massachusetts.
Meanwhile, Fairfax Media has reported state shadow treasurer Michael Daley has written to the corporate regulator, raising concerns Mr Baird's office may have tried to interfere with the integrity of a report from investment firm UBS on the government's privatisation plans.
Date: Mar 20, 2015
Category: World
Source: Google
John Robertson's leadership of NSW Opposition shaky: MPs
Opposition roads spokesman Michael Daley looms as the most likely new Labor leader if Mr Robertson does not hang on to his position through the Christmas break. Other MPs back Luke Foley for the position, but he faces the hurdle of being in the Legislative Council.
four contractors: Philly's Finest Construction L.L.C., 1100 Porter St., to do major alterations; David Rubin of South Philadelphia for electrical work; Michael Daley of Prospect Park for plumbing; and Francis Savarese of Sicklerville for mechanical work, installing a new furnace and air-conditioning.
The pallbearers were to include Mrs. Daleys brothers Francis Corbett, James Corbett and Joseph Corbett; brothers-in-law Michael Daley, William Daley and John Daley; and sons-in-law Sean Conroy and Sam Hotchkiss.
Date: Nov 28, 2011
Category: U.S.
Source: Google
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