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If I say: Level of a helicopter = 130 dB, most people are content.
Laymen think that a specific decibel value belongs to a noise source. Like heavy truck = 100 dB, jackhammer = 110 dB, rock band 120 dB. That is not correct.
Alway is forgotten that the distance from the sound source to the measuring point plays an important role. Sound level decreases by (−)6 dB per doubling of distance from the source. Without any distance a dB value is really nonsense.
What else can I help you with?
What is the normal decibel of a human voice?
The decibel level for standard human voices is around 60 decibels, which is also the level for singing birds. Hearing loss occurs at around 110 decibels with painful hearing loss occurring at 130 decibels.
Is The decibel is a unit of pitch?
No. A decibel is one tenth of a bel. The decibel is a logarithmic unit of measurement that expresses the magnitude of a physical quantity relative to a specified reference level. It is a dimensionless unit, because it expresses a ratio of two quantities with the same unit.
Info a submarine is 294 feet below sea level A helicopter is flying directly over the submarine 1277 feet above sea level what is the distance from the helicopter to the submarine?
If we have 294 + 1277 here, it will equal 1571 feet. The reference is sea level, and the submarine is 294 feet below it. As the helicopter is at 1277, by adding 294 and 1277, we get the distance between the sub and the chopper, which is 1571 feet.
One decibel is equal to in bel?
One decibel (dB) is equal to one tenth of a bel (B).
What is the decibel of a chainsaw?
The sound pressure level in decibels depends on the distance to the chainsaw. In 1 m distance we can get 110 dB. In 10 meters distance we get 90 dB. So keep off the noise maker.
When was Miss Decibel created?
Miss Decibel was created in 1987.
When was Doctor Decibel created?
Doctor Decibel was created in 1986.
What does a decibel have to do with sound?
A decibel is the unit of measuring the level of sound.
What is the decibel of a car horn?
What is the decibel level of a car horn?
What is the average decibel level of the sound in the room?
The average decibel level of the sound in the room is 60 decibels.
When was DeciBel Research Inc. created?
DeciBel Research Inc. was created in 2002.
What is the decibel level of a Sikorsky CH-3C helicopter?
The vortex noise decibel level of Sikorsky CH 3C helicopter is calculated in different parameters of the five rotatory blade revolutions per minute (rpm),thrust,sound pressure level (SPL),angular velocity radians per second, etc.At 183 rpm at 13400 pound thrust it is 78 db,for 20,500 pound trust it is 82 db. Similarly at 213 rpm rotor speed at 20000 pound thrust the noise level is 83 db.
What is decibel and how is it used as a measure of the loudness of sound?
A decibel is a unit used to measure the intensity or loudness of sound. It is a logarithmic scale that compares the sound pressure level to a reference level. The higher the decibel level, the louder the sound.
What is the average decibel level of thunder during a thunderstorm?
The average decibel level of thunder during a thunderstorm is around 120 decibels.
What decibel level is considered too loud for dogs?
The decibel level considered too loud for dogs is around 90 decibels.
What is the decibel level at which noise becomes harmful for babies?
The decibel level at which noise becomes harmful for babies is around 70 decibels.
What is the decibel level at which noise becomes harmful to babies?
The decibel level at which noise becomes harmful to babies is around 70 decibels.
