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How does a digital loudspeaker system work?

Digital loudspeaker system Type DS4 from Visaton

How does a digital loudspeaker system work?
The design of a digital loudspeaker system presents grave difficulties owing to the requirements for low quantization, low spurious noises and good directivity. The key to a good design lies in the digital signal processor, DSP. The electroacoustic conversion remains traditional, of course, but a DSP unit is added to the digital audio chain in which a digital-to-analogue converter (DAC) precedes the normal amplifier and loudspeaker.
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