signal generator
electronic devices or components that generate electrical voltages with a characteristic time course
starting pistol
acoustic signal generator to launch sports competitions
frequency sound generator
electronic device producing sound
railway signal
optical, acoustic or electronic signal providing information about the state of a railway line
sweep generator
electronic genertor of waveform with a linearly varying frequency and a constant amplitude (chirp)
comb generator
signal generator that produces multiple harmonic outputs
foghorn
device that uses sound to warn vehicles of navigational hazards like rocky coastlines, or boats of the presence of other vessels, in foggy conditions
function generator
piece of electronic test equipment or software used to generate different types of electrical waveforms over a wide range of frequencies
frequency synthesizer
electronic system for generating any of a range of frequencies
video-signal generator
type of signal generator which outputs video