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Meaningful text instead of raw link, formatting, some fixes.
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edit approved Jul 5 at 11:56
MarianD
edit approved Jul 5 at 11:56
MarianD
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If the decibel represents a gain ratio, why do we use it in sound measurements?

Yes, since we have an input signal in audio amplifier circuits, we can understand the behavior of this system according to how much the signal grows or shrinks. It makes sense to express this in decibels or gain, but why do noise meters that measure sound level in a normal environment use decibels? InOn Wikipedia, https://en.wikipedia.org/wiki/Sound_pressure#Sound_pressure_levelSound pressure level it is expressed as the reference (input) value used when measuring the signal. "threshold of human hearing (roughly the sound of a mosquito flying 3 m away".

... threshold of human hearing (roughly the sound of a mosquito flying 3 m away).

Why is it necessary to calculate such a thing and give the ratio of it? Why didn't they measure the sound level of the environment to be measured directly and express it with a unit suitable for it?

If the decibel represents a gain ratio, why do we use it in sound measurements?

Yes, since we have an input signal in audio amplifier circuits, we can understand the behavior of this system according to how much the signal grows or shrinks. It makes sense to express this in decibels or gain, but why do noise meters that measure sound level in a normal environment use decibels? In Wikipedia https://en.wikipedia.org/wiki/Sound_pressure#Sound_pressure_level it is expressed as the reference (input) value used when measuring the signal. "threshold of human hearing (roughly the sound of a mosquito flying 3 m away".

Why is it necessary to calculate such a thing and give the ratio of it? Why didn't they measure the sound level of the environment to be measured directly and express it with a unit suitable for it?

If the decibel represents a gain ratio, why do we use it in sound measurements?

Yes, since we have an input signal in audio amplifier circuits, we can understand the behavior of this system according to how much the signal grows or shrinks. It makes sense to express this in decibels or gain, but why do noise meters that measure sound level in a normal environment use decibels? On Wikipedia, Sound pressure level is expressed as the reference (input) value used when measuring the signal.

... threshold of human hearing (roughly the sound of a mosquito flying 3 m away).

Why is it necessary to calculate such a thing and give the ratio of it? Why didn't they measure the sound level of the environment to be measured directly and express it with a unit suitable for it?

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kaan
kaan
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What is the reason for using decibels to measure sound?

If the decibel represents a gain ratio, why do we use it in sound measurements?

Yes, since we have an input signal in audio amplifier circuits, we can understand the behavior of this system according to how much the signal grows or shrinks. It makes sense to express this in decibels or gain, but why do noise meters that measure sound level in a normal environment use decibels? In Wikipedia https://en.wikipedia.org/wiki/Sound_pressure#Sound_pressure_level it is expressed as the reference (input) value used when measuring the signal. "threshold of human hearing (roughly the sound of a mosquito flying 3 m away".

Why is it necessary to calculate such a thing and give the ratio of it? Why didn't they measure the sound level of the environment to be measured directly and express it with a unit suitable for it?