LondonJohn
Penultimate Amazing
- Joined
- May 12, 2010
- Messages
- 21,162
I need to point out that in my years as a ghost hunter I interviewed almost 200 people who "witnessed" all kinds of stuff. Some of these people were highly educated, and a few were police officers, soldiers, pilots, and other folks who do no commonly report things that go bump in the night.
Bottom Line: A sound without a visual source causes automatic confusion. Depending on the situation and the sound, people will investigate, but will look for the wrong thing because what they heard and what they thought they heard are two different things.
As a ghost hunter AND a studio musician I can categorically state that a lot of sounds share common frequencies and impulses which push air molecules in a similar fashion. I had a friend who did sound effects for movies and TV shows. Everything you hear in a movie or TV show is artificially recreated in a studio. EVERYTHING. And it's all done with items which sound like the real things, or what sounds good to the director (Until Saving Private Ryan I'd never heard accurate bullet and hand grenade sounds before).
People will assign a source to sounds whose origins are unknown. They will do this every time.
Just because passengers heard what they thought was an explosion doesn't mean that's what the noise was. They surveyed the ship, they recovered the hood. They know many of the vehicles, including trucks, were not tied down. Before explosives can be ruled in those other factors must be ruled out, and right now they cannot be ruled out as the sources of the loud bangs.
Ahh, the wonderful world of the Foley artist! I spent an hour with a Foley team working on a major motion picture (at my aforementioned visit to Pinewood), and they were laying down the very banal sound of two sets of footsteps on a concrete pavement. Suffice it to say - as you point out - they didn't create the sound by pointing a microphone at the feet of two people walking on the spot on concrete paving tiles. It was amazing to watch them work - even to the extent of altering the sound where the video showed a slightly lighter footfall on a couple of the steps.
As you say, what we think things sound like - when they aren't actually things we hear for real often if at all in our own lives - are more often than not different from what they actually do sound like. And probably highest up on that list is catastrophic-style events including collisions of extremely heavy vehicles, explosions, and gunfire. Heck, most people wouldn't be able to accurately identify the sound of a medium-speed collision between two saloon cars. Let alone anything to do with a very large and heavy ferry with a steel-plate hull, carrying momentum and KE that are outside virtually everyone's instinctive comprehension.