Cliff effect

[2] The cliff effect is a particularly serious issue for mobile TV, as signal quality may vary significantly, particularly if the receiver is moving rapidly, as in a car.

Two-level hierarchical modulation is supported in principle by the European DVB-T digital terrestrial television standard.

HD Radio broadcasting, officially used only in the United States, is one system designed to have an analog fallback.

It is also important for the station's broadcast engineer to make sure that the audio signal is synchronized between analog and digital, or the cliff effect will still cause a jump slightly forward or backward in the radio program.

The cliff effect is also heard on mobile phones, where one or both sides of the conversation may break up, possibly resulting in a dropped call.