US 11,812,215 B2
Method and system for calibrating a structure-borne sound-sensitive acceleration sensor and method for correcting the measuring signals of a structure-borne sound-sensitive acceleration signal
Christian Marschall, Reutlingen (DE); Amin Jemili, Kusterdingen (DE); and Sergej Scheiermann, Reutlingen (DE)
Assigned to ROBERT BOSCH GMBH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Jan. 20, 2022, as Appl. No. 17/648,508.
Claims priority of application No. 10 2021 200 860.7 (DE), filed on Feb. 1, 2021.
Prior Publication US 2022/0248124 A1, Aug. 4, 2022
Int. Cl. H04R 1/10 (2006.01); G06F 3/01 (2006.01)
CPC H04R 1/1075 (2013.01) [G06F 3/012 (2013.01); H04R 1/1083 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for calibrating a structure-borne sound-sensitive acceleration sensor using at least one microphone, the method comprising the following steps:
arranging the acceleration sensor in an intended position on a body of a user;
detecting at least one acceleration sensor signal and at least one microphone signal, the at least one acceleration sensor signal and the at least one microphone signal being synchronized and having been caused by a vocalization of the user;
frequency analyzing the acceleration sensor signal and frequency analyzing the microphone signal; and
ascertaining a frequency-dependent correction function of the acceleration sensor based on the frequency analysis of the acceleration sensor signal and the frequency analysis microphone signal.