Most Wonderful Sound (Sugar Wiki)/Real Life

Examples of |the Most Wonderful Sound in include:

Military

 * The sound of serious gunfire. I'm not talking about the little fire cracks of an AR-15. I am referring to the mighty blast of a gun such as a Mosin-Nagant M44
 * Or the even more mighty USN 16"/caliber 50 Mark 7.
 * In a different direction, the sound of a minigun firing off thousands of rounds a minute is pretty awesome:
 * Or the sound of a grenade being inserted in a grenade launcher
 * Or the "pumhp" noise of a grenade launcher shooting a grenade.
 * Pump-action shotguns being cocked.
 * The four clicks of a Colt Single Action Army being cocked.

Software

 * Adobe After Effects plays a very easily distinguished and very pleasing "Twingg!" sound when it reaches the end of a Render Queue, meaning the videos are finished being edited and are ready for viewing.
 * The startup sound of Windows 3.1. Holy nostalgia.
 * The Mac startup noise.
 * PlayStation startup screens:
 * Orgasmic.
 * even better
 * And then there's the nostalgia-incarnate classic that started it all...

Sports

 * The noise in a football stadium - or a packed bar - when your team scores. Less wonderful if it's the other team scoring.
 * The silence in a packed bar when your team scores, if everyone else in the bar is supporting the other team.
 * The sound of a golf ball falling in the hole.
 * A tennis ball's little pa-thmp as it bounces off the court.
 * The big pa-thmp it makes when connecting with the racket is even better.
 * A nothing-but-net swish in basketball.
 * The "thud"/"boing" of the ball (depends whether you're playing on hardwood or concrete) being dribbled.
 * The sound of metal (or plastic) cleats on concrete as the team leaves the locker room. It's like a pre-game anthem for those lucky enough to hear it.
 * Hockey skates make a similar noise.
 * Goal Horns followed by your team's choice of celebratory song.
 * Hearing your favourite player/team/etc cheer after winning is always wonderful, especially since they've worked so hard on it. A particular nod towards Formula One drivers who love screaming in their helmets.
 * Speaking of Formula One and motors in general: the revving of an engine. So soothing.
 * Some find racecar engines to be annoying little weedwhackers compared to real horsepower: http://youtu.be/FGMkqfhlUd4

Other Examples

 * A purring feline is possibly nature's most soothing white noise.
 * The sound of your baby's first cry immidiately after it's born.
 * The woosh-woosh sound of it's heartbeat in the womb. The first time he/she says 'mama' or 'dada' or 'I love you'.
 * Heck, a baby's laughter period.
 * Two from dogs: the rumbly, grumbling noise some dogs make when you scratch their ears (like the dog version of a purr) and their own personal percussion - a wagging tail as it hits your leg, the wall, nearby furniture, sometimes the floor...
 * "I LOVE YOU!"
 * Train whistles in the distance. Pure music.
 * The K5LA train horn (the ones you hear on Amtrak trains in the USA). Especially with the Doppler Effect.
 * That noise an old kettle makes when the water inside it starts to boil.
 * Click your mouse...YEAH! Now do it a couple more times, best sound ever.
 * The drone of a large box fan. I can't sleep without switching one on its highest speed. "Whurrrrrrrrrr....."
 * The sound of a passenger jet taking off. That is, if you're inside the plane or standing sufficiently far enough from it to avoid ear damage.
 * In a like vein, the sound of a jet engine spooling up.
 * Or the sound of an entire group of fighter jets doing afterburner takeoffs, one after the other, each jet following right after the one before it.
 * The sound of a well-maintained electric engine. For a layman, a barely audible hum. For an engineer? Basically a purring cat.
 * White noise can be a very relaxing sound.
 * The sound of a coffee grinder at 7 in the morning (or earlier) - any time of the day if you're a writer.
 * The various sounds of water. Rain, a trickling stream, a waterfall, the sea...
 * The sound of bubble wrap...bubbles popping.