Should I use A or C weighting?

Although the A-Weighted response is used for most applications, C-Weighting is also available on many sound level meters. C Weighting is usually used for Peak measurements and also in some entertainment noise measurement, where the transmission of bass noise can be a problem.

What is C weighting used for?

C-weighted decibels for noise at work The C-weighting is used for this to give us the peak sound pressure for the impulsive noise that the human ear is exposed to dB(C) (or LCPeak). Most modern sound level meters and dosimeters will measure both the LAeq and the LCpeak simultaneously.

What is an A-weighted decibel?

A dBA is a weighted scale for judging loudness that corresponds to the hearing threshold of the human ear. Although dB is commonly used when referring to measuring sound, humans do not hear all frequencies equally. You will often see noise levels given in dBA (A-weighted sound levels) instead of dB.

What is dBA and dB C?

The terms dBA and dBC refer to the types of filters used to measure dB — either an A filter or a C filter. Each filter has a different sensitivity to various frequencies.

What is the difference between A and C-weighting?

The A-weighted sound level discriminates against low frequencies, in a manner similar to the response of the ear. The C-weighted sound level does not discriminate against low frequencies and measures uniformly over the frequency range of 30 to 10,000 Hz.

Which frequency weighting should I use?

‘A’ Weighted is the most commonly used and covers the full frequency range of 20Hz all the way up to high frequency 20 kHz. The human ear is most sensitive to sound frequencies between 500 Hz and 6 kHz (especially around 4 kHz) whilst at lower and higher frequencies the human ear is not very sensitive.

Should I use dBA or dBC?

Decibel measurements made with the A-weighting scale are denoted as dBA; those with the C-weighting scale as dBC. Because hazardous workplace noise is typically loud, it make sense to measure it in dBC.

Why A-weighted decibel or dBA often used when describing sound level?

A-weighted decibels, or “dBA,” are often used when describing sound level recommendations for healthy listening. While the dB scale is based only on sound intensity, the dBA scale is based on intensity and on how the human ear responds. Because of this, dBA gives us a better idea of when sound can damage your hearing.

What is a in dBA?

You will often see noise levels given in dBA (A-weighted sound levels) instead of dB. Measurements in dBA, or dB(A) as it is sometimes written, are decibel scale readings that have been adjusted in an attempt to take into account the varying sensitivity of the human ear to different frequencies of sound.

What is dB C and dBA?

Decibel measurements made with the A-weighting scale are denoted as dBA; those with the C-weighting scale as dBC. Because the A-weighting scale filters out low-frequency energy, the reading will be several decibels lower than if the measurement were made using the C-weighting scale.

Can you convert dBc to dBA?

There is no “dBA” curve given as threshold of human hearing. Also no dBC measured values can be converted to dBA values. The frequency composition of the signal is not known. Readings of a pure 1 kHz tone should be identical, whether weighted or not.

What does dBc stand for sound?

dBc (decibels relative to the carrier) is the power ratio of a signal to a carrier signal, expressed in decibels. For example, phase noise is expressed in dBc/Hz at a given frequency offset from the carrier.