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Loudness is measured in decibels were the threshold of pain 120 decibels What does this mean?
Wiki User
∙ 14y ago
That means, a higher sound pressure let you ears ache. You can become deaf.
Wiki User
∙ 14y ago
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What does this mean 45 db?
45 decibels (meausurement of sound)
Loudness is a vector?
No. Loudness is a scalar quantity. It lacks a vector or direction. Be sure not to confuse this by applying personal experience. Follow along. You are stationary. You hear a sound. You don't move when you hear it. It has some "apparent loudness" as you experienced it. It stops. You turn your head in the direction you think it came from and hold your head still. The sound starts again at the same level it was. It sounds louder to you because you are now facing the source. But it isn't actually louder. You hear better because you are facing the source. This does not mean the loudness has a vector associated with it. It does not.
Can a variable measured at the interval or ratio level can have more than one arithmetic mean?
A variable measured at the interval or ratio level can have more than one arithmetic mean.
What is the correct answer for the calculation of a volume (in mL) with measured numbers?
We have literally no idea what you mean. Calculation of a volume of what? Which measured numbers? Your question, as it stands, is nonsense.
What is the measured unit in work?
If you mean work as in energy it is joules (j).
What does dab on an alarm clock mean?
just a guess, but decibels (loudness)?
How are decibels doubled and measured?
That is a missunderstanding. Decibels are never doubled. The ratio or the factor can be doubled.Doubling means the "factor 2". What does doubling of a "sound" mean?Doubling the (sound) intensity is obtained by an increase of the (sound intensity) level of 3 dB.Doubling the sound pressure is obtained by an increase of the (sound pressure) level of 6 dB.Doubling the loudness feeling is obtained by an increase of the (loudness) level of about 10 dB.
What is the decibel level of a sound wave?
Not really. The decibel is a measurement of the intensityof sound. A Bel is a factor of 10 of a power source. A decibel is a tenth of a Bel and is a ratio of one quantity to a reference quantity, on a log scale. Many entities including distances, weights, and other physical entities could be expressed in decibels. So, in the case of sound, we typically will express the RMS (root mean square) pressure value against a reference pressure of 20 µPa (micropascals). Thus a pressure wave exerting a specific pressure is converted into a decibel by taking 20 times the log10 of the ratio of the measured pressure to 20 µPa.
What is normal loudness?
Loudness is usually described in decibels, which is a logarithmic scale based on sound pressure level. If the threshold of hearing (for healthy ears) is taken as 2 x 10-5 Pascals, and this is called 0 db, then a fairly normal level such as you would find in a room in a house with the TV on is a sound pressure level 1000 times greater, ie 2 x 10-2 Pascals, and on the db scale this will be 60 db. Recommended maximum level for working is usually 90 db, above this ear defenders should be used. See the Wikipedia article on 'Decibel' (1 Pascal is 1 Newton per sq meter)
What does Rw dB mean in acoustics?
The ability of a material to absorb sound is assessed in the laboratory by taking measurements over a recognized range of frequencies. The average of these measurements is expressed as Rm or the Mean Sound Reduction Index. When adjusted for the ear's response to loudness it is termed Rwor Weighted Reduction Index and is expressed in dB or deciBels. DeciBel is a unit of measurement of the loudness or strength of a signal.
What do you mean by threshold of hearing?
The threshold of hearing is the minimum volume (loudness) at which a sound can be heard. This minimum volume is different for difference frequencies. Low frequencies have higher thresholds (require greater volume) to be heard. This is why audio amplifies have a base boost feature to raise the volume of low frequencies so they can be heard better.
On the decibel scale an increase of 10 decibels means an intensity increase of times?
10 decibels increase mean measured on a sound pressure level meter. SPL meter. Forget the intensity, because the ear drums and the microphone diaphragms are moved by the sound pressure. 10
What is the different between positive and negative decibel?
Negative decibels mean damping (loss) and positive decibels mean amplification (gain).
What would happen to the loudness of sound with increase in its frequency?
This is a difficult question to answer. The "loudness" of a sound is measured in decibels. Every time the number of decibels is increased by ten the amount of energy the sound waves carry doubles and therefore seems twice as loud. The "loudness" of a sound is not effected by the frequency, but by the decibels. However, some frequencies (mostly at the very limits of human hearing) will seam quieter. Also many bass frequencies seem louder because (of the audible spectrum of sound) they carry the energy the most efficiently through the air around us. A2 The loudness of a sound is a subjective phenomenon - to a human, we have a poor sensitivity to low frequemcy sounds, rising in the range of a few kilohertz, and again declining at frequencies much over 15 kilohertz. Additionally, the advertising industry for example takes advantage of the fact that we consider an advert louder if the signal is adjusted such that the sound spends much of its time at a higher level, but without the peak signals being exceded. This is done by a sophisticated form of signal clipping. And in the audio equipment industry, 'music power' is often quoted as the equipments output, rather than the more academic 'RMS' (Root Mean Square) of the signal. So, loudness is a subjective idea.
How many decibels can a set of 64watt speakers produce?
64 watts = 18.1 decibels. If by 'set' you mean you have two 64 watt speakers then they will create 36.2 decibels.
What does the word amplitude mean in music?
Loudness.
Loudness of sound amplitude in terms of decibles?
More Decibels mean more power in the sound. large amplitudes also mean more power in the sound. In order to double the audible signal one uses quadruple energy. or.. to double the decibel output one must quadruple the energy input. Regards.
