A really, really loud sound. - Page 1
Forum section: electronics / general

author: Gavin Melville
author_rank: Contributor
timestamp: January 17, 2020, 01:09:52 am
content: Just saw this on the local McDonalds drive through (in Christchurch, New Zealand)I am not going anywhere near a sound that loud.... Most reliable sources say the loudest sound you can have is 194dB, because the low pressure end of the waveform would be a vacuum, after that it becomes an impulse.Perhaps the loudest sound on earth was the The Tunguska event, which was a massive explosion that occurred near the Tunguska River in Russia, on June 30, 1908. The explosion was most likely caused by the air burst of a large meteoroid or comet fragment at an altitude of 5 to 10 kilometers (3–6 mi) above Earth’s surface. It was measured with the similar impact of a 1000-Mega-ton bomb with a decibel rating 300-315. And we're still 900 dB short.Despite a background in Concert Sound I've never come across the DMWM "standard rating", and google doesn't really give any useful results. Has anyone come across this ?

author: Gregg
author_rank: Super Contributor
timestamp: January 17, 2020, 01:23:02 am
content: I'm curious, does Christchurch have a lot of criminal activity? Or is this just a warning to hopefully limit liability in spite of the exaggerated sound level claim?

author: shakalnokturn
author_rank: Super Contributor
timestamp: January 17, 2020, 01:34:02 am
content: Don't confuse Db and dB, deci-Bel's are the unit commonly used for sound levels.In this case it must be Donald's balls... Impressive I must admit!

author: free_electron
author_rank: Super Contributor
timestamp: January 17, 2020, 02:06:00 am
content: Meh. Never been to a Disaster Area rock concert have you ? Optimum sound balance is 27 miles from the stage in concrete bunkers underground.

author: amyk
author_rank: Super Contributor
timestamp: January 17, 2020, 02:28:02 am
content: Those must be Chinese dBs... is DMWM anything like PMPO?

author: Gavin Melville
author_rank: Contributor
timestamp: January 17, 2020, 06:35:45 am
content: No, not at all, and not in that area.Most of that poster is pretty silly.I thought about calling McDonalds corporate and explaining how dangerous 1200 dB would be. I think a sound that loud would destroy the planet. Then again destroying McDonalds may not be a crime.

author: ConKbot
author_rank: Super Contributor
timestamp: January 17, 2020, 06:51:22 am
content: Pressure at the center of a neutron star? 1.6e34 Pa. 1200db SPL? 2e55 Pa.Set off the alarm, and they create a black hole just out of spite.

author: Bud
author_rank: Super Contributor
timestamp: January 17, 2020, 07:12:13 am
content: So much security to sell burgers...

author: babysitter
author_rank: Frequent Contributor
timestamp: January 17, 2020, 07:35:03 am
content: They stream to the police 24/7, have cctv 24/7, police will look for it 24/7! And they have somebody in the local weight&measurement comittee. They are the danger.

author: German_EE
author_rank: Super Contributor
timestamp: January 17, 2020, 09:05:26 am
content: I just have this crazy vision of someone breaking in to that place and the alarm is so loud it reduces the building to dust

author: Electro Detective
author_rank: Super Contributor
timestamp: January 17, 2020, 09:13:45 am
content: MacDollars should be worded up that any likely perps will not, and or can not, READ..especially a sign with no food, shakes, or police with cuffsand blasterspicturedand any perps that can read won't know what '1200Db DMWM' means,calorie stats for a Big MacFat burger?That sign is a waste of junk food ad space

author: lordium
author_rank: Regular Contributor
timestamp: January 17, 2020, 09:36:52 am
content: obviously 1200 Dicks broken, Don't Mess With MacDonalds.

author: GlennSprigg
author_rank: Super Contributor
timestamp: January 17, 2020, 02:32:05 pm
content: (I've been known to digress !!)Reminds me of an Airlines report log from pilots to maintenance...Pilot: "The warning sounds are 'unbelievably' loud!!"Maint: "Set the sound to a more 'believable' level".Not to mention...Pilot: "Rattling noise under front console. Sounds like a midget with a hammer!".Maint: "Took hammer away from midget...".Or the worst...Pilot: "Engine 3 is missing!"Maint: "Found engine-3 on the right wing!"

author: T3sl4co1l
author_rank: Super Contributor
timestamp: January 17, 2020, 02:42:10 pm
content: That's way more neutrons than dubnium is supposed to have.Tim

author: Cyberdragon
author_rank: Super Contributor
timestamp: January 18, 2020, 07:11:14 am
content: WARNINGThis McDonalds contains the trigger to the self destruct at the center of the planet. Any funny business and the quantum detonator will fire causing the core to go supernova and vaporize the entire solar system in a nanosecond.DON'T TEST US!

author: Electro Detective
author_rank: Super Contributor
timestamp: January 18, 2020, 09:53:17 am
content: Quote from: lordium on January 17, 2020, 09:36:52 am"1200Db = 1200 D!cks broken?!!Don't be that '1201 guy or hermafrodite'Don't Mess With MacDonalds"So what THD and IMD ratios are we talking about at such a genital trashing level,and what are they using to measure the levels and what weighting scales used, A, B, C,or a custom 'D' etc etc