decibel scale

The decibel scale makes sound intensity numbers easier to work with.

I took a breath and tried to steady my voice, which was starting to inch up the decibel scale.

The decibel scale measures sound based on human hearing, which makes it one of the most unusual scientific measurements.

The scale, like the decibel scale for sound, is logarithmic.

The decibel scale is a little odd because the human ear is incredibly sensitive.

On the decibel scale, the smallest audible sound (near total silence) is 0 dB.

What actually is a decibel scale?

The Shock Pulse meters measure the shock signal on a decibel scale, at two levels.

Because many signals have a very wide dynamic range, SNRs are often expressed using the logarithmic decibel scale.

On a decibel scale, the crowd noise at Qwest Field in Seattle probably falls somewhere between a rock concert and a rocket launching.

In applications involving sound, the particle velocity is usually measured using a logarithmic decibel scale called particle velocity level.

As the human ear can detect sounds with a wide range of amplitudes, sound pressure is often measured as a level on a logarithmic decibel scale.

On the decibel scale - named for Alexander Graham Bell - prolonged noise above 100 decibels is uncomfortable for most people.

On the political decibel scale, Mr. Cox is the quiet man that Mr. Burton could never seem to be.

The ratio produced by this calculation is often converted to a decibel scale for reporting, with a maximum of 0 dB and a minimum of dB.

'The reduction is more than it looks because the decibel scale is a logarythmic one,' says Dr Greg Watts, of the Transport and Road Research laboratory at Craythorn.

The town board's action should dictate the kinds of development that are suitable at the site, where proposals have ranged up and down the decibel scale, from homes and golf courses to auto racing tracks.

One study of noise in hospital by Bentley et al(1977), and still considered a classic reference, used the dB(A) scale, from among several decibel scales, because of its close relationship to noise which damages human hearing.

The measure is often stated in dB(A), which is the equivalent loudness of the noise on a decibel scale frequency-weighted for how the ear hears, for example: "15 dBA SPL" (SPL means sound pressure level relative to 20 micropascals).

However, since the decibel scale is measured on a logarithmic scale a 30 dB gain represents a one thousandfold signal power increase - meaning the total amplification of a repeater with greater than around 50 dB is likely to be useless without a good, well aligned antenna.