TL;DR - the sights and sounds, or lack thereof, of the cargo, ship and survey scanners.
i go to extreme lengths to wring every last nugget of info i can when trying to detect pirates scanning you when jumping into a system.
here is the screenshot of my current audio settings:
https://i.imgur.com/wAIf950.png
=================== WORLD LEVEL =========================
---------'ship effects' ------
uncloaking sound
exterior station sounds
cargo/ship/survey scanner
command bursts and remote repping
hardeners
------ 'turret volume' -------
enemy fire
salvage drone effects
-------
{world level} also includes jump activation, warping effects
========= UI SOUND LEVEL ============
that stupid thunk thunk (the sort of submarine ping) sound when you enter a new system [session change]
a really soft sound when activating gate (hard to hear) that isn't 'jump activation'
new item ding (edit: i think ccp removed it? yay)
targeting something
the hum sound when dragging an item from a cargo hold
the click sound when dropping an item into a bay
the weapons timer ticker (as it counts down)
the Dscan affect is tied to both ui sound level AND secondary interfaces (adv.)
"Tied Abyssal Deadspace boundary warning to UI Sound Level audio slider and the Warning slider under Advanced Audio Settings" ~dec'19 patch notes
the ship health alerts affects are controlled by both ui sound level AND warning sounds (adv.)
============ CCP NOTES ======================
(from when they nerfed options in audio settings)
Turret volume - Turret Volume
Impacts - Turret Volume
Stargates - Atmosphere
Wormholes - Atmosphere*
Jump Activation - Jump Activation
Crimewatch - (UI Sound Level)
Explosions - Ship Effects
Engine.MWD.AB - Ship Ambience
Station Exterior - Atmosphere
Station Interior - Atmosphere
Modules - Ship Effects
Ship Ambience - Ship Ambience
Warping Effect - Ship Effects
3rd Party warp - Jump Activation
Map and Ship Tree Vol - Secondary Interfaces
Locking - (UI Sound Level)
EVE store - (UI Sound Level)
Planets - Atmosphere
UI Click - (UI Sound Level)
Radial Menu - (UI Sound Level)
UI Interaction - Secondary Interfaces
Aura - (UI Speech Level)
Hacking - Secondary Interfaces
Shield Warning - Warning Sounds
Hull Warning - Warning Sounds
Ship Damage Warnings - Warning Sounds
Cap Warning - Warning Sounds
Atmosphere - Atmosphere
Music Dungeons - (Music Level)
Music General - (Music Level)
parenthesis indicate it's rooted to the 'basic' not 'advanced' audio settings
AUDIO CUSTOMIZATION COMING IN KRONOS!
2014-05-30 - BY CCP WHITENOISETRASH - EVE DEV-BLOGS
https://www.eveonline.com/article/aud...
AN AUDIO TRANSITION: INTRODUCING ODYSSEY’S NEW TRANSITION SOUNDS
2013-06-06 - BY CCP WHITENOISETRASH - EVE DEV-BLOGS
https://www.eveonline.com/article/sou...
INTRODUCING TEAM KLANG!
2012-11-13 - BY CCP T0RFIFRANS - EVE DEV-BLOGS
https://www.eveonline.com/article/int...