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Anonymous asked in Cars & TransportationCar Audio · 1 decade ago

Is 100 decibels loud? How loud? i.e compared to stuff?

7 Answers

  • 1 decade ago
    Favorite Answer

    * 180 decibels, equivalent to a rocket launching pad [hearing loss inevitable].

    * 140 decibels, equivalent to a gunshot blast, jet plane take-off at close range [approximately 200 feet], air raid siren [any length of exposure time is dangerous and is at the threshold of pain].

    * 130 decibels, equivalent to sound vibrations felt, as with thunder or near a four-engine jet at thirty meters.

    * 125 decibels, equivalent to a diesel engine room.

    * 120 decibels, equivalent to an amplified rock concert in front of speakers, sand-blasting, thunderclap [immediate danger], a nearby airplane engine, some rock or hard-metal cacophony groups, pneumatic hammer at one meter, thunderclap over head [at around 120 dB, the sensation of hearing is replaced by that of pain].

    * 110 decibels, equivalent to deafening factory noises and some musical boxes turned up too loudly, discotheque, thunder, rock-n-roll band.

    * 108 decibels, equivalent to the coqui frog croak of Puerto Rico [up to 108 dB].

    * 105 decibels, In a Malaysian surgical-glove factory, making surgical-latex gloves by dipping porcelain models of the human hand into liquid latex, which when dried, is blown off the hands by air jets. Before modifications to the air jets, the gloves were blown off every 30 seconds at a deafening 125 decibels.

    * 100 decibels, equivalent to a chain saw, pneumatic drill, printing plant, jackhammer, speeding express train, some car horns at five meters, farm tractor, riveting machine, some noisy subways [about 20 feet].

    * 90 decibels, equivalent to a police whistle, heavy traffic, truck traffic, noisy home appliances subway-rail train, pneumatic drill [or hammer] at one meter, walk-man ear phone [average volume], rock drill at 100 feet, some motorcycles at 25 feet, shouted conversation.

    * 80 decibels, equivalent to heavy city traffic [25-50 feet], alarm clock at two feet, factory noise, vacuum cleaner, heavy truck, loud-radio music, garbage disposal.

    * 70 decibels, equivalent to typewriter, average factory noise, busy traffic [at one meter], office tabulator, noisy restaurant [constant exposure], quiet vacuum cleaner, TV.

    * 60 decibels, equivalent to an air conditioner at twenty feet, conversation [at one meter], sewing machine, large transformer, ordinary or average street traffic.

    * 50 decibels, equivalent to quiet radio, average home, light traffic at a distance of 100 feet, refrigerator, gentle breeze, average office, non-electric typewriter, ordinary spoken voice.

    * 40 decibels, equivalent to quiet office, living room, bedroom away from traffic, residential area [no traffic]; many computer hard drives range an average of 40-50 dB, soft whisper [five feet].

    * 30 decibels, equivalent to quiet conversation, soft whisper, quiet suburb, speech in a broadcasting studio.

    * 20 decibels, equivalent to whispering, ticking of a watch [by the ear], rural area [without loud farm machinery or other excessive noises].

    * 10 decibels, equivalent to the rustling of leaves.

    * 0-1 decibels, equivalent to the faintest sounds that can be heard, the threshold of audibility.

    There are professional acoustic engineers who are in the business of "noisebusting" machinery used by individuals and production lines. Some noisebusting is pure decibel reduction to meet safety standards. OSHA, the Occupational Safety and Health Administration (a U.S. government agency), has limited workers' exposures to eight hours per day at sound levels of 90 decibels, four hours at 95 decibels and two hours at 100 decibels, with special limits for quick, sharp sounds, such as explosions.

  • Anonymous
    5 years ago

    Decibel Comparison

  • 6 years ago

    This Site Might Help You.


    Is 100 decibels loud? How loud? i.e compared to stuff?

    Source(s): 100 decibels loud loud compared stuff:
  • 4 years ago

    How Many Decibels

  • Anonymous
    7 years ago

    This is a much more complicated subject. First off, the dB is a measurement of gain (amplification), so saying something is 40dB means it is 40dB louder than something else.

    To use the dB as a measurement of an absolute level you have to apply a reference, in this case, it should be dBa - meaning in relation to the threshold of hearing (the quietest thing you can hear). So, 40dBa is 40dB louder than the threshold of hearing. The threshold of hearing starts at 0dBa.

    dBs are logarithmic and, when talking about level in this way, a doubling of level is +6dB. +10dB is very roughly three times louder; +20dB is a gain of about ten. +60dB is 1,000 times (20+20+20=60; which equates to 10x10x10=1,000).

    Sound starts to get painful at 120dBa. This is 120dB louder than the threshold of hearing - 120 is 60x2. 60dB is a gain factor of 1,000, so 120dBa is 1,000 x 1,000 times louder = 1,000,000 times louder than the threshold of hearing.

    If a vacuum cleaner is 70dBa, then two operating at the same time will be 76dBa.

  • 1 decade ago

    Some decibel ratings:

    0 db Threshold of hearing

    30 db Whisper

    40 db Buzz of mosquito

    50 db Normal conversation

    70 db Vacuum cleaner

    100 db Subway or power mower

    120 db Rock concert

    130 db Jackhammer or machine gun

    150 db Nearby jet plane

    100 db will cause hearing loss after about 8 hours exposure. Each increase of 10 db multiplies the sound level by 10. 100 db is 10 times as loud as 90 db. 110 is 10 times as load as 100.

  • 1 decade ago

    Yes. It is very loud. The human voice is 40 decibles; HOWEVER, when you go up 10dB, the volume doubles. So, 50dB is TWICE as loud as 40dB, so you can imagine how ****** loud 100dB is! haha.

    Source(s): -Car audio technician.
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