tboorn Posted August 5, 2015 Report Share Posted August 5, 2015 i was listening to an interview on NPR yesterday and the subject of military underwater sonar came up and how it can kill dolphins and whales, the lady they were interviewing wrote a book and seemed very knowledgeable but then she said something that instantly i couldn't believe... She claimed that these advanced military underwater sonars could register as loud as 236db!!!!!!! from everything i have ever read and learned, the loudest possible spl is 194db IIRC, because after that it would just be an explosion, or a vacuum or something of that matter. so once i got back to my computer and started researching around, i found multiple different articles, all claiming that these sonars produce sound waves between 1khz-10khz, up to 235db, and can travel 300 miles and still register a force of 140db..... so my questions are this.. 1.can sound waves be produced louder under water rather than in air? 2.how are they determining/measuring these 235db readings? (is it some mathematical equation for determining SPL) 3.WTF???? 235db?????? wow, i just wanna discuss that haha. here are some articles i found on the internet. http://www.scientificamerican.com/article/does-military-sonar-kill/ http://www.nrdc.org/wildlife/marine/sonar.asp this is the interview from NPR, it's really interesting, mainly about how smart dolphins are. http://www.npr.org/2015/08/04/428986235/exploring-the-wild-and-haunting-world-of-dolphins Fidelity Built to Last Team Sound Asleep 24Runner Build Log: http://www.stevemeadedesigns.com/board/topic/196657-24runner-sleeper-system-lots-of-fi-neo-dd-focal-new-video-w-juicebox-lithium/ 2 x 12" Fi BTL N2 / 2 x 12" Fi BTL N3 2 DD M3b Maxwell 2.7V 3000F Supercapacitors Pioneer DEH-80prs Focal P165 V30 components Rockford Fosgate T-400.4 Link to comment Share on other sites More sharing options...
Jessica Posted August 5, 2015 Report Share Posted August 5, 2015 Water is denser than air so can sustain higher pressure. Rest in peace, walled 87 accord build log 03' Corolla build with AA Mayhem inside. My super random youtube channel and terrible camera work. Wiring comparison by CaptainzPlanetz Wire and fuse guide by Guest SyKo13 Link to comment Share on other sites More sharing options...
Jessica Posted August 5, 2015 Report Share Posted August 5, 2015 Also there is a sea critter that snaps it's "fingers" so loud it knocks out prey. Rest in peace, walled 87 accord build log 03' Corolla build with AA Mayhem inside. My super random youtube channel and terrible camera work. Wiring comparison by CaptainzPlanetz Wire and fuse guide by Guest SyKo13 Link to comment Share on other sites More sharing options...
MotorCityFats13 Posted August 5, 2015 Report Share Posted August 5, 2015 Also there is a sea critter that snaps it's "fingers" so loud it knocks out prey. I think you are talking about the mantis shrimp and it knocks out its prey by punching them but it is so fast you can hear the snap... only a wizard can knock things out with a snap of the fingers Link to comment Share on other sites More sharing options...
reedal Posted August 5, 2015 Report Share Posted August 5, 2015 . SMD Tool Map https://www.stevemeadedesigns.com/board/topic/193176-smd-tool-map-new-november-2014/ Build log https://www.stevemeadedesigns.com/board/topic/197217-reeds-03-tahoe-hat-sqaq-singer-xs-shca-cockbox-80prs/?page=32 Link to comment Share on other sites More sharing options...
Leo1103 Posted August 5, 2015 Report Share Posted August 5, 2015 Also there is a sea critter that snaps it's "fingers" so loud it knocks out prey. I think you are talking about the mantis shrimp and it knocks out its prey by punching them but it is so fast you can hear the snap... only a wizard can knock things out with a snap of the fingers not the mantis shrimp, hes talking about the pistol shrimp 2002 Honda CR-VAlpine 9887My BuildRebuilding... Second Skin Damp 4 DC XL 15's 2 DC 5ks Singer 320 amp 6 cap banksSky High wire 2 VM-1's OM-1 all under window line Team DC Audio Obama has a law he's trying to pass right now, trying to ban Leo for being a threat to children everywhere.EDIT: Not in a JP kind of way. I thought I was going to die from all the jizz filling my ears. Link to comment Share on other sites More sharing options...
CleanSierra Posted August 5, 2015 Report Share Posted August 5, 2015 ^^^ both of you are nerds. Im not the one you want to try to troll. Just a fyi for you. Link to comment Share on other sites More sharing options...
Leo1103 Posted August 5, 2015 Report Share Posted August 5, 2015 ^^^ both of you are nerds. says the one browsing smd while hes in hawaii lol 2002 Honda CR-VAlpine 9887My BuildRebuilding... Second Skin Damp 4 DC XL 15's 2 DC 5ks Singer 320 amp 6 cap banksSky High wire 2 VM-1's OM-1 all under window line Team DC Audio Obama has a law he's trying to pass right now, trying to ban Leo for being a threat to children everywhere.EDIT: Not in a JP kind of way. I thought I was going to die from all the jizz filling my ears. Link to comment Share on other sites More sharing options...
CleanSierra Posted August 5, 2015 Report Share Posted August 5, 2015 ^^^ both of you are nerds.says the one browsing smd while hes in hawaii lol Bored on the plane waiting to taxi out Im not the one you want to try to troll. Just a fyi for you. Link to comment Share on other sites More sharing options...
Broke_Audio_Addict Posted August 5, 2015 Report Share Posted August 5, 2015 Also there is a sea critter that snaps it's "fingers" so loud it knocks out prey.I think you are talking about the mantis shrimp and it knocks out its prey by punching them but it is so fast you can hear the snap... only a wizard can knock things out with a snap of the fingers not the mantis shrimp, hes talking about the pistol shrimpthe mantis and pistol Shrimp both have a similar type of attack. That being said a lot of people's definition of "music" is a clipped 30 hz sine wave with some 80 IQ knuckle head grunting about committing crimes and his genitals. Link to comment Share on other sites More sharing options...
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