Quick burst of low pitched noise
Alien conversation, voices pitched and speed up. Vintage recording.
High pitched beep tones x3, modulating in pitch,smooth
Baby babbling, trying to express itself as best it can, sounds quite happy.
Mid pitch modulating tone communication pulses
Crunchy synth pads, panned back and forth, right to left
Panned alarms with throbbing mid pitch flutters and radio tuning noise
Spacecraft to base station radio communication sentences
Single quick and resonating beep sound made with an analog synthetizer