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(11) | EP 0 256 593 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Loudspeaker system and loudspeaker for converting an n-bit digitalized electric signal into an acoustic signal |
(57) An electrodynamic transducer (1) for use in a loudspeaker system for converting an
n-bit digitized electric signal (11) into an acoustic signal comprises n voice-coil devices (4.1, 4.2, ... 4.n) which cooperate with a magnet system (3).
The voice-coil devices each comprise a conductor whose length is the same for all
the voice-coil devices. The areas of the perpendicular cross-sections of the conductors
increase each time by a factor of two starting from the voice-coil device (4.n) corresponding
to the least significant bit and going to voice-coil devices corresponding to consecutive
more significant bits. In accordance with the invention steps are proposed which
enable such a transducer to be constructed in a simple manner if the transducer is
a ribbon-type loudspeaker. |