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Bookmark or Share- What is A-weighting? - SiemensA-weighting is a frequency dependent curve (or filter) which is applied to sound pressure microphone measurements. A microphone detects sound equally well at all frequencies, but the human ear does not detect sound equally well at all frequencies.
- The ABCs of Frequency Weighting - Acoustical EngineerHow much a frequency is weighted depends on the type of curve applied. All frequency weighting curves are named with letters of the alphabet. A-weighting is by far the most widely used frequency weighting used in acoustics. It de-emphasizes low and high frequencies while slightly boosting middle frequencies (around 1–4 kHz.)
- Frequency Weightings - A-Weighted, C-Weighted or Z-WeightedIt is extremely important that sound level measurements are made using the correct frequency weighting - usually A-weighting. For example, measuring a tonal noise of around 31 Hz could result in a 40 dB error if using C-weighting instead of A-weighting. The most common weighting that is used in noise measurement is A-Weighting.
- A-weighting - WikipediaA-weighting is a form of frequency weighting and the most commonly used of a family of curves defined in the International standard IEC 61672:2003 and various national standards relating to the measurement of sound pressure level. [1] .
- A-weighting Table - Acoustical EngineerTo determine A-weighted decibel values (dBA), add the A-weighting factor for the corresponding one-third octave frequency band to the unweighted decibel level (dB). This table was created with expressions from IEC 61672-1:2013 Electroacoustics – Sound level meters – Part 1: Specifications to calculate A-weighted levels.
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