Patent ID: 7397924
Filing Date: 2008-07-08
Classification: H04R

Abstract:
1. A modular loudspeaker comprising: a broadband module for the radiation of acoustical energy over a first frequency range; at least one low frequency module for radiation of acoustical energy over a second frequency range, which may at least partially overlap said first frequency range; at least one controllable pre-processing means for pre-processing of audio signals provided from an audio source and for distribution of said pre-processed audio signals between said broadband module and said at least one low frequency module; control information providing means for providing and transferring control information between said at least one low frequency module and said at least one controllable pre-processing means, for indicating the presence and number of said at least one low frequency module; whereby said pre-processing means, due to said control information, can sense the presence and number of said at least one low frequency module and thereby carry out appropriate changes of a set of signal processing parameters in order to obtain a given one of a set of predetermined target responses for the complete modular loudspeaker; said broadband module further comprising, in addition to said at least one controllable pre-processing means, a first input terminal for receiving an audio signal, a first output terminal for providing a pre-processed version of said audio signal and a second input means for receiving control information for said controllable pre-processing means; said low frequency module further comprising said control information providing means, a third input terminal for receiving an audio signal and a second output means for providing said control information from said control information providing means; said first output terminal being connected to said third input terminal and said second output means being connected to said second input means whereby said controllable pre-processing means receives said control information provided by said control information providing means.