Digital Radio Mondiale (DRM) is a means of transmitting audio and data digitally over the radio, including the medium and short wave bands. Let's start by looking at which capabilities the DRM technology can offer. First, audio fidelity is frequently mentioned as a distinct advantage of DRM. Analogue medium and short wave transmission is low-fidelity; it is subject to static, fading, and interference. DRM, by contrast, may be higher-fidelity, but excessive interference or deep fades simply cause the signal to drop out.
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