Timbre

annoying synthesized alarm, (triangle waves & sine waves )

Loopable version of ... https://freesound.org/people/Hoerspielwerkstatt_HEF/sounds/345399/

processed version of ... https://freesound.org/people/Erokia/sounds/426751/ This remix sounds a bit better when downloaded

spinning excerpt of ... https://freesound.org/people/gis_sweden/sounds/431471/ Spinning-effect MUCH better when downloaded.

Processed excerpt of ... https://freesound.org/people/gis_sweden/sounds/431437/ [ This remix sounds better when downloaded ]

loud harmonic noise

loopable remix of ... https://freesound.org/people/Hoerspielwerkstatt_HEF/sounds/400366/ [The bridge is on the spectrogram]

Speaker-cabinet/mic simulator with varying amounts of feedback and reverb.

loopable processed remix of ... https://freesound.org/people/GioMilko/sounds/425792/

loopable processed excerpt of ... https://freesound.org/people/Erokia/sounds/425582/

Louder bassier remix of Eardeer's Freesound #425238 ... https://freesound.org/people/eardeer/sounds/425238/ There are subtle variations, (visible on spectrogram).

processed looped excerpt of ... https://freesound.org/people/Erokia/sounds/401743/

Processed version of Eroika's Freesound #425081 ... https://freesound.org/people/Erokia/sounds/425081/

the start of ... https://freesound.org/people/wjoojoo/sounds/424420/ looped & processed in DtBlkFx

loopable processed excerpt of freesound #424277 ... https://freesound.org/people/eardeer/sounds/424277