@buffet or the tram warning sound used by swedish crosswalks
@buffet There's also the NASA recording of the Sputnik beeps https://www.nasa.gov/wp-content/uploads/2015/01/578626main_sputnik-beep.mp3
@buffet aaaaaand I've fallen back down the oh so familiar rabbit hole of number stations. Starting off with a few that doesn't need to be edited:
- polytones: https://ia801905.us.archive.org/16/items/ird059/tcp_d2_41_high_pitch_polytone_irdial.mp3
- the pip: https://dn710701.ca.archive.org/0/items/ird059/tcp_d4_31_the_pip_irdial.mp3
- 6tones https://dn710701.ca.archive.org/0/items/ird059/tcp_d2_38_6_tones_irdial.mp3
@buffet @buffet Here are a good collection of beeps taken from various numbers stations (source at https://archive.org/details/ird059/) part 1/7
@buffet this one is one of my favorites - beeps 6/7
@buffet beeps 2/7