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:
May. 19, 2015
Filed:
Mar. 03, 2011
Werner Paulus Josephus DE Bruijn, Eindhoven, NL;
William John Lamb, Eindhoven, NL;
Werner Paulus Josephus De Bruijn, Eindhoven, NL;
William John Lamb, Eindhoven, NL;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
A speaker system includes a first speaker () and a second speaker (). A driving circuit receives an audio signal and has a first drive circuit () generating a first drive signal for the first speaker () in response to a first filtering of the audio signal with a first passband. A second drive circuit () generates a second drive signal for the second speaker () in response to a second filtering having a second passband which includes a frequency band below the first passband. A delay () delays the second drive signal relative to the first drive signal. The sound from the second speaker is directionally radiated with a directional radiation pattern having a notch towards the listening position (). The system uses the precedence effect and non-direct low frequency audio radiation to ensure that directional cues are predominantly provided by the first speaker () which may be small and positioned remote from the second speaker ().
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile