Mirra 15

DSP

With ABACUS active loudspeakers and subwoofers, the crossover, i.e. the division of the signals according to the frequency range, and the optimization of the loudspeaker characteristics are always carried out actively, i.e. before the power amplification (unlike with passive loudspeakers, where the already power-amplified signal is separated and influenced by coils and capacitors). Depending on the loudspeaker series and the associated complexity and price-performance ratio, ABACUS does this with analog filter circuits (e.g. C-Box, Trifon, Oscara) or, as here, with a digital signal processor. The built-in digital signal processor (DSP) performs a wide range of different tasks without increasing the complexity of the components immeasurably. The DSP used in ABACUS provides countless filters, takes over the function of the active crossover, linearization of the frequency response, phase and delay corrections and, on top of that, switching and control functions. Once the signal has been digitized, it can be processed as required without any loss of sound quality, because every filter and every control function is then just a computing task that is processed at a high clock frequency. The time delay caused by the processor is only approx. 0.3 ms.