Invention Grant
- Patent Title: Digital microphone assembly with improved frequency response and noise characteristics
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Application No.: US15216928Application Date: 2016-07-22
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Publication No.: US10257616B2Publication Date: 2019-04-09
- Inventor: Mohammad Shajaan , Claus Erdmann Fürst , Per Flemming Høvesten , Kim Spetzler Berthelsen , Henrik Thomsen
- Applicant: Knowles Electronics, LLC
- Applicant Address: US IL Itasca
- Assignee: Knowles Electronics, LLC
- Current Assignee: Knowles Electronics, LLC
- Current Assignee Address: US IL Itasca
- Agency: Foley & Lardner LLP
- Main IPC: H04R3/00
- IPC: H04R3/00 ; H04R19/04 ; G06F3/16 ; H04R3/02 ; H04R3/06 ; H04R19/00

Abstract:
A microphone assembly includes an acoustic transducer element configured to convert sound into a microphone signal in accordance with a transducer frequency response including a first highpass cut-off frequency. The microphone assembly additionally includes a processing circuit including a signal amplification path configured to receive, sample and digitize the microphone signal to provide a digital microphone signal. A frequency response of the signal amplification path includes a second highpass cut-off frequency which is higher than the first highpass cut-off frequency of the acoustic transducer element.
Public/Granted literature
- US20180027338A1 DIGITAL MICROPHONE ASSEMBLY WITH IMPROVED FREQUENCY RESPONSE AND NOISE CHARACTERISTICS Public/Granted day:2018-01-25
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