All buttons have their own position and specific sound for aech position
If a selector has 3 positions each position will have their own unique sound recorded from real corresponding selector
Each switch has unique sound with detail even to the spring
Each lever has unique sound, some levers, for example spoiler lever even has the sound of isolation brushes while lever travels
Every mechanical object that has sound, was recorded and has its own corresponding location
Explore with battery shuto
ff, because some button or switch you don't want to press, unless for emergency or to see how the sound works
Doors, armrests, traytables
Most of the mechanical stuff, even buttons have the sound feature that depends how you press, select or switch.
Try for example pushing button on mcdu with battery off and hold each key, then release, the sound will follow
Cabin fans inside work with cab fans button, to fans installed in A320
AEVC self test system will boost avionic fans when give power to aircraft
Ventilation system work as per real A320, with logic of blower and extractor fans
Inlet and outlet valves located below front doors that will open and close externally and internally will change the sound of
avionic fans, experiment with blowerand extractor override buttons to see how it change
On pressurization page on ecam you can see if the state is closed loop or open, depending on many condition
and the sound will follow. This is why the A320 cockpit avionic fans sometimes sound louder or more quiet
You have "alive" breathing cockpit every flight.
Outflow valve have the sound too and located in the back of aircraft, you can experiment with manual control of outflow valve
to see how
Lavatory and galley extraction fan works everytime you have power and is not controllable
Walk around the cabin and cockpit as well as outside with different configurations of vent system
With open left front door you can hear the blower fan starts working depending on configuration, stand by the door to hear it
One can notice how cockpit ambience becoms differnt when from ground state vent system becomes to closed loop. With engines off
switch ignition to start and move throttle to TOGA and you will hear how open loop changes to closed
Also blower has resets when switching from AC to DC and vice versa, you will hear a slight whistle with the contactor sounds
A320 has Honeywell 131-9A and it was recorded from that specific type
When you press master button, the apu inlet will mechanically open and you can hear the sound of it from outside or in
When you press start, ignition will sound like ticks and turbine will get started
with cabin door opened you can hear the apu from outside as it spools up, also you can hear it in the aft of aircraft
refer to this video :https://www.youtube.com/watch?v=HSVp5..
APU also has exhaust sound and is 360 degree modeled with a sound, if you rotate around the apu
Electrical system features 28v and 400hz hum that will modulate depending on the load of the system
To check it out, override blower, so it will be a less noise in cockpit
and with power on, put a load on it by selecting a fuel pump or window heat for example,then you will hear
electrical hum change, so you electrical system is alive by the means of sound as well
All contactor sounds, relays depending on what bus you are switching, try to switch between engines(automatic), apu, and external power
Fwd and aft galley equipment also has a sound
Transformers and rectifiers have also sounds and they are located in E&E bay below, you can tell by high pitch electrical
noise. More or less each A320 has it's own volume of those, some louder, some not.
All bus ties have sounds
Random systems some of them , too many to list
Electrically operated are for example Landing ligghts, you can hear the mechanical extension/retraction of it by the wings
You can also try the evac by pressing command button and then pressing it again and then horn shut button to get evacuation signal
Also you can hear CVR test by pressing ground control button and then pressing test
You can check windshield wiper motor by selecting wipers selector, you can hear the park motor and 2 speeds of operation
You can play with cockpit door lock/unlock mechanism by closing and opening the cockpit doors and selecting lock switch,
dont lock yourself out, there is a door code that also has sounds on CDLCU
Brake fans do have the soound, outside, and a bit inside when door is open
All doors have sounds of opening, closing and locking
Consists of 6 pumps, each produce the sound when operative. Bass and vibration is dependant on altitude speed.
Much more full features are hte same as real A320
I welcome you to compare by YT videos but keep in mind few things
1. Quality. Most of the YT videos are really lacking sound quality and record cockpit sounds VERY low quality, that goes for cabin videos as well.
2. Microphones when used by non professionals and in general tend to fixate on background sound when there are no other sounds play, such as avionic fans, packs etc, so that's why they might seem louder than usual as well as they drop volume when some other loud sound is playing. It's not human ear after all.
THats why most of developers have too much volume on their packs and avionic cooling system. BSS managed to record AVC and PACKs as they are in real life and set them at correct level of how human ear hears them.
Few things we still werent able to complete for your own good such as actual DB volume. At takeoff and climb DB in cockpit are 85DB that is damaging to ear at long exposure, so we kept it safe.
Also if you happened to find a video or experience when something is louder than here or less loud is only has to do with that every aircraft does sound different a bit. They have sometimes different sound insulation, louder mechanical systems, for example some aircraft transformers sound really loud, some fuel pumps sound louder or quieter etc. We have recorded from multiple aircraft and kept items at how they were at these aircraft.
ALso many users got used to the sound from passenger perspective, its also fine, watch more videos and trust us, we have
a heart in what we do.
We try to keep systems sounding liquid in here, such as you will hear panel shakes and bumps depending on how you taxi or roll and depending on how bad your landing was.
The same thing goes for turbulence. IT will sound shaky if the aircraft really shakes
Turbines are state of the art, N1, and N, outside inside all 360 degrees and depending on the speed, altitude and state.
For example, CFM's will "scream whine" on the ground at the lower angle of attack and tend to "saw" later when lifted to anlge at takeoff. The do change with speed and altitude and the way you hear them in this sound pack
We have modeled the Bass after takeoff since it gets muted while the aircraft is grounded by its wheels and in the air all the vibrations are heard better. You can hear it already right away after takeoff, the bass at TO is more louder when the gears are off the ground. ALso you have noticed most likely on descending at flight levels you will here bassy vibrations, we have modeled it at the exact amplitude it is in real world.
The same goes for most of the systems, they are all "fluid" AEVC will sound different at cold and warm weather as their skin state is different, electrical hum will modulate, PTU will sound depending on the load and fuel pumps will sound louder when running harder.
Delta pressure sounds, contactors, rectifiers, 400 hz, 28v modulations, airflow turbulence over all the surfaces that move and dont, and many many more...
Ahh so much more to write and explain... I will do that in the video and let you hear yourself while I give the example.
Obviously, I don't want to write a book here, although the subject is so big that I would have to. Explore and hear different things.