Synthesized sawtooth sound with increasing pitch. An initial click and noise are added. The sound is low-pass filtered using a cutoff frequency that increase during the sound.
A few notes from a flute were transformed using the hps model with frequency stretching. A sci-fi 'spaceship' sound is produced. The track is 44100 = fs, mono.
A sound made usingalienxxx sound http://freesound. Org/people/alienxxx/sounds/343864/and my (gis_sweden) sound https://www. Freesound. Org/people/gis_sweden/sounds/344087/.
Noise fade into wobbling sound. A machine noise from space ship engine-room with ahigh eletric pitch sound computer blinking or a metallic needlecreated woith buzz tracker.
See title &. . . Https://freesound. Org/people/strangehorizon/sounds/610554/. Before-bleep-after-after-after-after. After's have noise-reduction & compression & pseudo-stereo.