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Sound volume is often measured in decibels. The decibel scale works in mnany ways. LOL
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Many ways indeed! it's not a simple matter, and we have to distinguish between intensity and power, which are not the same things. Most sound volumes figures are of Sound Pressure Level (SPL) in deciBels, and this is a brief explanation. It helps if know basic logarithm principles!
The deciBel (dB) is not a measure of power or intensity of sound only, but can describe any acoustic, electrical or electromagnetic signal, so to use it properly you have to specify the right units and scale.
Further, it is not a linear unit like a metre or a litre, but a product of a constant with the logarithm of a ratio! And that ratio's denominator is the reference levelrelevant to what you are measuring, and to which you compare the measured level.
We use this logarithmic scale because the human ear is roughly logarithmic in response to sound pressure; and the maximum pressure it can bear for a short time painfully but without injury is 1 million times the faintest it could hear before too many of those maxima hit it for too long.
In measuring sound in air by deciBels, you use 20µPa (20 micro-Pascals), where the Pascal is the official SI unit of pressure. It's an extremely tiny pressure, but still too big for acoustics, where you need to work in millionths of Pascals - i.e. micro-Pascals. (The standard abbreviation for 'micro' is the Greek letter µ.)
Why 20µPa? It is the SPL of the faintest sound the fully-healthy human ear can detect - a staggeringly low 1/(5000 000 000) of Standard Atmospheric Pressure.
So deciBels avoid clumsy calculations with lots of big exponents, and turns many of the sums into just adding and subtracting modest numbers.
Therefore, measuring sound level in air, and without going into the derivation of the 20 constant, the SPL = [ 20 log-base-10 (measured pressure µPa / 20µPa) ] deciBels.
So to quote the sound pressure level fully, it is N dB re[ferred to] 20µPa.
Marine acoustics - dolphin calls, sonar etc. - uses a mere 1µPa as reference, so the two sound scales are not readily comparable.
A measured level equal to its reference is 0dB in whatever scale you use, because the ratio is then 1, and as log-base-10(1) = 0, so 20log(1) = 0.
Why can't you count from 0µPa? Because that makes the denominator 0, and you can't divide by 0.
What else can I help you with?
Volume of a sound wave is equal to the what?
The amplitude of a sound wave is the same as its volume.
What is an example of volume in sound?
An example of volume in sound is when you adjust the volume control on a stereo to make the music louder or softer. Increasing the volume level will result in louder sound, while decreasing it will make the sound softer.
The volume of sound is determined by?
The volume of sound is determined by the amplitude of the sound waves. Higher amplitude corresponds to a louder sound, while lower amplitude corresponds to a quieter sound. Essentially, the energy in the sound wave affects the perceived volume of the sound.
What does volume have to do with sound?
answ2. The use of the term volume with regard to sound comes from its meaning of 'total quantity'. The word volume is not only a dimensional measure. e.g. the total volume of goods produced last year represented a 3% increase.A1. volume has a lot to do with sound because if their where no volume you would not be able to hear anything
Is sound related to volume?
Yes, sound is related to volume. Volume refers to the level of sound intensity, with louder sounds having higher volumes. Sound waves carry energy and amplitude, which are perceived by our ears as varying levels of volume.
The difference between pitch and volume?
Pitch refers to how high or low a sound is, determined by the frequency of the sound waves. Volume, on the other hand, refers to how loud or soft a sound is, determined by the amplitude of the sound waves.
What does the word volume mean in sound?
"Volume" is a term referring to how loud a sound is to humans and animals. Most entertainment devices that use sound have a "Volume Control", typically labelled, "Volume". Volume is not quite the same as "Loudness", by the way.
A sound with high volume is?
volume
How is the sound of volume measured?
Answer is by sound waves
What does volume mean when we are describing a sound?
Volume refers to the loudness or intensity of a sound. It is measured in decibels (dB), with higher decibel levels indicating a louder sound. Volume is influenced by the amplitude of the sound wave, which determines how powerful the sound is perceived to be.
What is the objective of 150w audio amplifier?
To make low volume sound into HIGH volume sound.
Can sound be made if there is no volume and only pitch or vice wersa?
Sound is made up of both volume (amplitude) and pitch (frequency). Volume refers to the loudness of the sound, while pitch refers to how high or low the sound is. Both volume and pitch work together in creating the overall perception of a sound.
