| 摘要 |
A LOUDSPEAKER SYSTEM COMPRISING EQUALIZATION DEPENDENT ON VOLUME CONTROL The application relates to a loudspeaker system comprising a) an input unit providing an electric input audio signal; b) an equalization unit for modifying said electric input audio signal or a processed version thereof in dependence on frequency and to provide an equalized electric audio signal according to a predefined equalization function, c) a loudspeaker unit for converting said equalized electric audio signal or a processed version thereof to an acoustic output sound signal, and d) a user interface for modifying a volume level of said output sound signal in a multitude (N) of steps Vo, V1, ... , VN. The application further relates to a method communication device comprising the loudspeaker system and to its use. The object of the present application is to provide an improve loudspeaker system. The problem is solved in that the equalization unit - e.g. in a particular mode of operation of the loudspeaker system - is configured to apply a specific equalization function EQo, EQ1, ..., EQN to the electric input audio signal in each of said multitude of steps Vo, V1, ... , VN of the volume level. This has the advantage of allowing an equalization to be adapted to a specific user selected volume level of the loudspeaker unit. The invention may e.g. be used for the handsfree telephone systems, mobile telephones, teleconferencing systems (e.g. speakerphones), public address systems, karaoke systems, classroom amplification systems, etc. (Fig. 1 c should be published) I N -- IU el EQ e eq SPK OUT FIG. 1a eFN1 eIN2 elNeq dO aO1 aO2 -N I EQ 0 A SP OUT [CN TLSS FIG. 1 b elN1 elN2 elNeq1 elNeq2 dO aO1 aO2 dlN0O _ 0 _ O UT U I-CNT FIG. 1 c |
