i can hear music from a concert over 3 mls away,how powerful a sound system would that have to be?

Answer 1

According to Wiki, the quietest sound humans can hear at 2kHz is 0.00002 pascals or a sound power of 10**-12 Watts.which is 0dB. Normal talking at 1m distance is 40-60dBs.

According to Wiki, in acoustics, the sound pressure of a spherical wavefront radiating from a point source decreases by a factor of 1/2 as the distance r \ is doubled, or measured in dB it would decrease by 6.02 dB. The behavior is not inverse-square, but is inverse-proportional.

I f we take the above information and we assume that the level the pop concert is heard at is normal talking volume, we would need to calculate the following:

Assume the pop concert is 5km away, we can calculate the loss by the inverse square law. We just need to work out the power of 2 which fits the ratio of the distances.
5000/1 is approximately 2**12 (4096) so the dB loss over 5km is approx 12*6 dB or 72dB. If we add this to the talking volume of 40-60dB we get 110-130dB which is about the same as a jet at 100m.

Because this assume normal speaking volumes, we could get away with much less and still hear it, it we drop it by 40dB to the minimum hearing level, we would only need 100dB at the concert which is only about the same as inside a discotheque. There will also be a channeling effect from the directionality of the speakers so the sound will be going more in particular directions and it will also be carried on the wind depending on atmospherics and landscape.

So the stage would probably be audible with only 80-100dB SPL which could in fact be belted out by a powerful home hifi system in reality. That such a small amount of sound is in reality needed is not so surprising as on a quiet still night a factory siren can easily be heard from over a mile away and a train whistle for several miles if the conditions are right.

Answer 2

It depends on what is between you and the concert. If there's a forest in that three mile stretch then the sound system will be much more powerful, if it's over a lake then it will be much less powerful.

Answer 3

It's important to say that tinnitus is a symptom and not a disease. Some people will have tinnitus because their Cochlea is damaged. And in a few, it could be caused due to hearing loss. But of course, the most common cause of tinnitus is exposure to loud noises. The noise can be a sudden burst, or it could be a constant banging that hits the ear drum and travels inside.

A good guide you can read about tinnitus and some good natural remedies can be found here: http://tinnitus.toptips.org

Answer 4

It depends on atmospheric conditions and wind direction. Normally speaking, for the music to still be audible at 3-miles, it would have to be at about 80 dBA or about as loud as an old-fashioned vacuum cleaner.

Answer 5

Its probably something to do with the direction of the wind as well as a good sound system

Answer 6

it truly is should be between the worst and maximum unfaithful generalizations I have ever heard that they only yell top right into a mic and also you may't understand the lyrics! yet once you stated he only likes gospel and instrumentals i'm guessing he only stated that by potential of reality he doesn't pick to objective to love Rock music no longer that he quite believes that reality in any comprehend. i ought to wish to upward thrust up with thousands of songs genuinely so that you could understand the lyrics to yet listed listed lower than are some: Marmalade-Reflections of my existence Beatles-She Loves You Blue Cheer-Summertime Blues Stooges-Little Doll There ya bypass i protect a Punk Rock and Heavy metallic music you're waiting to genuinely understand.

Answer 7

If the concert is in the Hollywood Bowl, you wouldn't need any sound system at all.

Answer 8

SOUND TRAVELS AND ALL DEPENDS ON THE WIND I SOMETIMES HERE MOTOR RACING AT BRANDS HATCH FROM 10 MILES AWAY IF THE WIND IS IN THE RIGHT DIRECTION.

Answer 9

strong enough to carry sound about 3 miles or so

Answer 10

serious......