The Decible Comparison Chart

Tyan · March 29, 2009

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202-198 (P) HUMAN DEATH FROM SOUND (SHOCK) WAVE ALONE. DEATH FROM: SCHRAPNEL AT ANY LEVEL ABOVE 165 DB IS LIKELY AND BEING THROWN (10 FEET PER SECOND) ABOVE 180 DB

205.29(NP) 320 POUNDS OF T.N.T. RIECHTER 1.5

207 (N)BOMB, SMALL SIZED 250 POUNDS, 14 FOOT WIDE CRATER, NEARBY MAY EXCEED 238 db

209 (N)BOMB, MEDIUM 500 POUNDS, 18 FOOT WIDE CRATER NEARBY MAY EXCEED 240 db

210 N.A.S.A. 400,000 ACOUSTIC WATTS EXPIERIMENTAL NOISEMAKER 48 FEET ACROSS OF CONCRETE AND STEEL

210.6 (NP) EARTHQUAKE REICHTER SCALE 2.0

210.6 (NP) 1 TON OF T.N.T. and a 23.40 foot crater

212 (N) SONIC BOOM AVERAGE FROM JET

213 (N) SONIC BOOM GENERATES APPROXIMATELY 1.2 GIGAWATTS OR 1.6 MILLION HORSEPOWER

213 (N) BOMB 1 TON TNT, 23 FOOT WIDE CRATER OR 175.8 db (P) AT 250 FEET

214.09(P) = 10 atmospheres, DB(Q) BLAST WIND = 217.439 DB(Q)

215 SPACE SHUTTLE LAUNCH EXHAUST, APPROXIMATELY 3 MILES PER SECOND

215 (N)THUNDER, THE LARGEST POSITIVE GIANTS. ORDINARY THUNDER 165-180 DB.LIGHTNING STRIKE

ON OCEAN SURFACE 234db (P) AT 2exp-5 NEWTONS PER SQUARE METER

215 (N) BATTLESHIP NEW JERSEY FIRING ALL 9 SIXTEEN INCH GUNS

216 (P) INSIDE A NORMAL CAR ENGINE CYLINDER WITH A 9 TO 1 COMPRESSION RATIO

216.0 (NP)+-0.3 DB 6.5 TONS OF T.N.T. EXACT EXTREMELY ACCURATE HIGH TECH MEASUREMENTS

217.439(Q) = DYNAMIC PRESSURE BLAST WIND FROM A 10 ATMOSPHERE OVERPRESSURE

220 ?(N)BOMB, LARGEST USED IN WWII, WIEGHING 11 TONS AND 25 FEET LONG

220 (N)SATURN 5 ROCKETSHIP, MELTS CONCRETE AND BURNS GRASS ONE MILE AWAY

REACHED A VELOCITY OF 5 MILES PER SECOND AND MOON ON JULY 20, 1969

220 ?(N)SPACE SHUTTLE LANDING SONIC BOOM WITH VELOCITY OF MACH 20

225 (P) INSIDE A NORMAL DIESEL MOTOR SEMI-TRUCK CYLINDER 25 TO 1 COMPRESSION

226.59 (NP) TRAIN EXPLOSION 2004 FEB 19 09:37AM NEYSHABUR, IRAN, runaway train, possible terrorism, shattered windows at 15 km.,crater is 500 feet diameter and 50 feet deep, magnitude 3.6 riechter, at several miles "the entire area shook", heard at 75 km, equal to 251.195 tons of t.n.t., 51 car train = 17 cars sulpher, 6 cars gasoline, 7 cars ammonium nitrate fertilizer (a.n.f.o.), 10 cars cotton wool, 3 left at station not involved, 8 miscellaneous loads

228.1 (P)EXACTLY. 1 POUND OF T.N.T. AT A DISTANCE OF 1 FOOT

229 (N) SEAFLOOR VOLCANIC ERUPTION, REFERENCE 2 EXP-5 NEWTONS PER SQUARE METER

230.59 (NP) EARTHQUAKE RIECHTER 4.0

230.59 (NP) 1000 TONS OF T.N.T.

232 (N)LARGE NON-NUCLEAR EXPLOSION, 500 TONS, 1917 DESTRUCTION OF GERMAN

WWI TUNNELS IN MESSINES RIDGE BELGIUM, HEARD OR FELT IN LONDON (N)

234.09(P) = 100 ATMOSPHERES, BLAST WIND = 241.46 DB(Q)

235 (P) 1 TON T.N.T. AT 10 FEET, EXACTLY 235.3 DB

235.19 (NP) EARTHQUAKE RIECHTER 5.0

235.19 (NP) 31624 TONS OF T.N.T.

240 (N)ONE KILOTON OF T.N.T EXPLOSIVE, 233 FOOT WIDE CRATER 29 FEET DEEP,10 P.S.I. AT 1000 FEET (P), 230 DB AT 10000 FT(N)

240?(N)TORNADO, FUJITSU 5, ENERGY GUESS BASED ON 300 MILE PER HOUR WIND, 1 MILE WIDE

241.46 (Q) = blast wind pressure from a 100 atm overpressure

243 (N)LARGEST NON-NUCLEAR EXPLOSION EVER, 1947 DESTRUCTION OF NAZI U-BOAT PENS

USED 7100 TONS OF EXPLOSIVE

247 (P) BOMB INSIDE SHOCK WAVE MAXIMUM LIMIT PRESSURE OF T.N.T. EXPLOSIVE

248 (N)ATOMIC BOMB-HIROSHIMA AND NAGASAKI JAPAN AUG. 6, 9, 1945.TRAGICALLY KILLED

300,000 PEAPLE. TOTALLY DISINTEGRATED 16 SQUARE MILES, CRACKED DISTANT CONCRETE WALLS 12” THICK, EQUAL TO 20,000 TONS OF T.N.T., WIND WAS AROUND 300 MILES PER HOUR, DESTROYED WALLS 28” THICK AT 1 MILE.POWER TO MAKE A CRATER 633 FEET WIDE AND 80 FEET DEEP

254.09 (P) = 1000 atmospheres overpressure, dynamic pressure = 261.721 db

255 (N) 600 KILOTONS GROUND BURST CRATER IS 2112 FEET WIDE AND 211 FEET DEEP

257 (N)NUCLEAR BOMB, 1 MEGATON (1 MILLION TONS OF T.N.T.)

261.721 (Q) = dynamic blast wind pressure generated from a 1000 atmosphere overpressure

274.09 (P) = 10000 atmospheres overpressure, dynamic pressure = 282.042 db(Q)

278 (N)NUCLEAR BOMB, “BRAVO” TEST 15 MEGATONS, 1954, BIKINI ATOLL, MARSHALL ISLANDS

282 (N)NUCLEAR BOMB, 57 MEGATONS HYDROGEN LARGEST EVER DETONATED, 1961

SHOCK WAVES CIRCLED THE EARTH 3 TIMES, FIRST ORBIT TOOK 36 HR 27 MIN.

282.042 db(Q) = dynamic wind pressure from a 10000 atm overpressure source

286 (N)MT. SAINT HELENS VOLCANO ERUPTION-BABY VOLCANO, BLEW DOWN TREES 16

MILES AWAY. COULD BE SEEN FROM OUTER SPACE ON THE SPACE SHUTTLE

BLEW OUT SOME WINDOWS IN SEATTLE-TACOMA 200 MILES AWAY, 163 db (P)

294.09 (P) = 100000 atmosphere overpressure, dynamic pressure = 302.0488 db(Q)

296 (N)EARTHQUAKE 8.6 RIECHTER SCALE- GROUND MOVED UP AND DOWN 13 FEET.

300 (N)HURRICANE – AVERAGE, EXTREME ENERGY IS “DILUTED” BY COVERING 500,000

SQUARE MILES. ENERGY = APPROX. 1000 NUCLEAR BOMBS A SECOND.

302?(N) TUNGUSTA SIBERIA METEOR, BLEW DOWN HOUSES 600 MILES AWAY

302.0488 db(Q) = dynamic pressure from a 100000 atmospheres overpressure

310 (N)KRAKATOA VOLCANO ERUPTION-1883 A.D., CRACKED ONE FOOT THICK CONCRETE

AT 300 MILES, CREATED A 3000 FOOT TIDAL WAVE, HEARD 3100 MILES AWAY,

SOUND PRESSURE CAUSED BAROMETERS TO FLUCTUATE WILDLY AT 100 MILES

INDICATING LEVELS OF AT LEAST 170-190 DB (P) AT THIS DISTANCE OF 100 MILES

EVEN WHEN SHOUTING IN SOMEONES EAR, COULD NOT BE HEARD AT 100 MILES

CAUSED FOG TO APPEAR AND DISAPPEAR INSTANTLY AT HUNDREDS OF MILES

ROCKS WERE THROWN TO A HIEGHT OF 34 MILES. DUST AND DEBRIS FELL CONTINOUSLY FOR 10 DAYS AFTER BLAST. PRODUCED VERY COLORFUL SUNSETS FOR ONE YEAR, EJECTED 4 CUBIC MILES OF

THE EARTH. CREATED ANTI-NODE OF NEGATIVE PRESSURE AT THE EXACT OPPOSITE SIDE OF THE EARTH.SOUND COVERED 1 / 10 OF THE WORLDS SURFACE, SHOCK (SOUND) WAVES “ECHOED” AROUND THE EARTH 36 TIMES AND LASTED FOR ABOUT A MONTH!

316 (N)VOLCANO ERUPTION SORANTINI, ITALY,1470 B.C. ALTHOUGH MORE ENERGY THAN KRAKATOA, IT BLEW UP OVER A LONGER PERIOD OF DAYS AND NOT AS VIOLENTLY, HENCE THE INSTANT PEAK PRESSURE IS BELIEVED TO BE LOWER

THAN KRAKATOA. 15 CUBIC MILES EJECTED, CREATED TIDAL WAVE 165 FEET

HIGH AT A DISTANCE OF 80 MILES

320 (N)VOLCANO ERUPTION, TAMBORA INDONESIA,1815, EJECTED 36 CUBIC MILES.APPROXIMATELY EQUAL TO

14,000 MEGATON NUCLEAR BOMBS OR A 14 GIGATON BOMB BASED ON EJECTED VOLUME,CHANGE IN MEGATONS TIMES 1.345 EQUALS VOLUME EJECTED CHANGE.IF WAS A NUCLEAR BOMB IT WOULD CREATE A CRATER ABOUT 12.4 MILES WIDE AND 1.33 MILES DEEP.INTERNAL PRESSURE IS BELIEVED TO BE ABOUT 47 MILLION P.S.I. = 347 DB (P)

raytard · March 29, 2009

all i got from that is i have between 30 and 40db of tinnitus

shit....

BenH · March 30, 2009

That chart is useless.

IH8PunkRok · March 30, 2009

honestly think about this guys. those volcano eruption ones are all estimation. no one had a db meter at those places.

194 db is the loudest sound after that its known as pressure

and as far as us knowing that something is 160 db... how do we know a foot is a foot? we made it that way

Neo_frog · March 30, 2009

honestly think about this guys. those volcano eruption ones are all estimation. no one had a db meter at those places.

194 db is the loudest sound after that its known as pressure

and as far as us knowing that something is 160 db... how do we know a foot is a foot? we made it that way

x2

194dB is the loudest sound possible for a sound wave at 1 atmosphere of environmental pressure. Pressure waves of greater intensity or >194dB behave as shock waves and are not considered sound.

Technically, if the subs were able to displace over half of the cabin air in a completely sealed 'system', we could break 194 someday of straight pressure because we would essentially be bringing the cabin's environment >1 atmosphere. 'Sound' and 'pressure' are not the same thing when measuring SPL.

Charger · March 31, 2009

The list is highly inaccurate, haha

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