Mobile phone electronic key tones X3 as number speed dialed, then ring tone heard X3
Quick blip from key pad of touch tone phone.
Single quick and extremely high pith beep
Smooth and long resonant chime tone
A thin percussive tone made with a drum machine.
A sharp analog tone shot with an enveloped attack.
An analog low frequency rising tone that sounds like an airplane.
A synth pad tone moving upwards.
A sputtering industrial drone with whirling background tone
Old-style tape recording answer machine, switched on,tape rewound, played, caller's hang-up at end