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:
Apr. 24, 2018
Filed:
Jan. 12, 2017
Vlsi Solution Oy, Tampere, FI;
Pasi Ojala, Tampere, FI;
Toni Liitola, Tampere, FI;
VLSI Solution Oy, Tampere, FI;
Abstract
A method and apparatus for adjusting a cross-over frequency of a loudspeaker system. The loudspeaker system includes at least a first loudspeaker for frequencies below the cross-over frequency and a second loudspeaker for frequencies above the cross-over frequency. A level of the first loudspeaker is matched with the second loudspeaker using a first test signal and a room response is compensated in the loudspeaker system on the basis of the first test signal. The compensated room response is measured using a second test signal. A maximum frequency for the first loudspeaker and a minimum frequency for the second loudspeaker are determined. A cross-over frequency that results in a minimum cumulative total harmonic distortion energy at one or more sound pressure levels is searched between the minimum and maximum frequency.