The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 2020
Filed:
Mar. 28, 2019
Applicant:
Tdk Electronics Ag, München, DE;
Inventors:
Assignee:
TDK Electronics AG, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/183 (2006.01); G05F 1/56 (2006.01); H04R 1/40 (2006.01); H02M 3/04 (2006.01);
U.S. Cl.
CPC ...
H03F 3/183 (2013.01); G05F 1/56 (2013.01); H02M 3/04 (2013.01); H04R 1/406 (2013.01); H03F 2200/03 (2013.01);
Abstract
A microphone array is disclosed. In an embodiment a microphone array includes a power supply circuit arrangement, at least one microphone circuit and a voltage detector. The power supply arrangement includes a switched-mode power supply circuit configured to generate at least two different levels of output voltage. The at least one microphone circuit includes a microphone transducer, and audio amplifier, a switchable voltage regulator circuit supplying the amplifier. The voltage detector is configured to switch the output voltage of the voltage regulator circuit depending on the voltage supplied by the switched-mode power supply circuit.