| 摘要 |
<p>An electroacoustic transducer (1) includes a ringing signal generation means (20) for generating a ringing signal (CS) and an electroacoustic transducer (9) for the acoustic reproduction of the ringing signal (CS), in which the ringing signal generation means (20) includes at least two fundamental tone signal generation stages (GT1, GT2, ......... GTn), which are each adapted to generate a fundamental tone signal (GS1, GS2, ........... GSn) of a given frequency (f1, f2, ....... fn), which frequencies (f1, f2, ....... fn) are in a rational ratio to each other, and in which the ringing signal generation means (20) has a control means (21) with the aid of which each of the fundamental tone signal generation stages (GT1, GT2, ......... GTn) can be activated for a given time interval, namely in such a manner that at least two fundamental tone signal generation stages (GT1, GT2, ......... GTn) are activated simultaneously.</p> |
