Exactly what the signal consists of is a subject for further research.

These signals can consist of; eye contact and nodding your head to show you understand.

A two-light signal may consist of yellow and red lights.

It was a coded signal consisting of several alphanumeric sequences.

Distant signals consist of one or two vertical lights.

Let be a signal consisting of evenly spaced samples.

All these signals consist of a blue diamond-shaped board with various patterns of white markings.

The principle behind the technology is that the transmit signal consists of short bursts of ultrasonic energy.

A monoaural signal, consisting of identical left and right signals, results in a straight line with a slope of positive one.

The amplitude modulated signal, then, consists of a constant strength carrier and two sidebands.