Invention Grant
- Patent Title: Active room compensation in loudspeaker system
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Application No.: US15757927Application Date: 2015-12-16
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Publication No.: US10448187B2Publication Date: 2019-10-15
- Inventor: Jakob Dyreby
- Applicant: BANG & OLUFSEN A/S
- Applicant Address: DK Struer
- Assignee: BANG & OLUFSEN A/S
- Current Assignee: BANG & OLUFSEN A/S
- Current Assignee Address: DK Struer
- Agency: Harness, Dickey & Pierce, P.L.C.
- Agent Anthony G. Fussner
- Priority: DK201500619 20151008
- International Application: PCT/EP2015/079991 WO 20151216
- International Announcement: WO2017/059934 WO 20170413
- Main IPC: H04R3/00
- IPC: H04R3/00 ; H04S7/00 ; H04R3/04 ; H04R5/02 ; H04R5/04 ; H04R3/12

Abstract:
A method for compensating for acoustic influence of a listening room on an acoustic output from an audio system including at least a left and a right loudspeaker, the method comprising determining a left frequency response and a right frequency response, designing a left compensation filter FL, and a right compensation filter FR, and during playback applying the left and right filters to left and right channel inputs. According to the invention, a target response in the listening position is simulated, and the left and right compensation filters are designed to filter transfer functions based on the simulated target function multiplied by an inverse of the left/right frequency responses. By relying on a simulated target instead of relying on an empirical approach, the general impact of a room can be more accurately captured by the target functions.
Public/Granted literature
- US20180249272A1 ACTIVE ROOM COMPENSATION IN LOUDSPEAKER SYSTEM Public/Granted day:2018-08-30
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