Noise measurement

<h2 id="audio-systems-and-broadcasting">Audio Systems and Broadcasting</h2>
Noise measurement can also be part of a test procedure using <a href="/facts/White_noise/wJ0SR21n">white noise</a>, or some other specialized form of test signal. In audio systems and broadcasting, specific methods are used to obtain subjectively valid results in order that different devices and signal paths may be compared regardless of the inconsistent spectral distribution and temporal properties of the noise that they generate. In particular, the <a href="/facts/ITU-R_468_noise_weighting/kMEdMoNM">ITU-R 468 noise weighting</a> was devised specifically for this purpose and is widely used for professional audio and broadcast measurements.

<h2 id="standards">Standards</h2>
There are a number of standards for noise measurement, each with a different goal or focus, including:

<ul><li><a href="/facts/Standard%3aITU-R_BS_468/kMEdMoNM">Standard:ITU-R BS 468</a> widely used in Broadcasting and professional Audio.</li>
<li>Standard:IEC A-weighting is widely used in Environmental Noise measurement.</li>
<li>Standard:CCIR recommendation 468-4 is now maintained as ITU-R BS 468</li>
<li>Standard:CCITT 0.41 refers to '<a href="/facts/Psophometric_weighting/RQKyuRC9">Psophometric weighting</a>' used on telephone circuits.</li>
<li>Standard:CCITT P53 is now continued as CCITT0.41</li>
<li>Standard:BS 6402:1983 specifies Personal sound exposure meters.</li>
<li>Standard:BS 3539:1968 specifies <a href="/facts/Sound_level_meter/BbTmlDaq">Sound level meters</a> for motor vehicle noise.</li>
<li>Standard:BSEN 60651 supersedes BS 5969:1981 Sound level meters</li></ul>
<h2 id="see-also">See also</h2>
<ul><li><a href="/facts/Sound_power_level/CDs5e3ta">Sound power level LWA</a></li>
<li><a href="/facts/Audio_system_measurements/9hnslzGd">Audio system measurements</a></li>
<li><a href="/facts/Rumble_measurement/lhCsoYYJ">Rumble measurement</a></li>
<li><a href="/facts/Noise_(environmental)/dVwYwHMM">Noise (environmental)</a></li>
<li><a href="/facts/Noise_pollution/dVwYwHMM">Noise pollution</a></li>
<li><a href="/facts/Noise_music/zzruNzyI">Noise music</a></li>
<li><a href="/facts/Noise_dosimeter/mtNY41Al">Noise dosimeter</a></li>
<li><a href="/facts/Equal-loudness_contour/TamhqmSc">Equal-loudness contour</a></li>
<li><a href="/facts/A-weighting/nvBjQ5We">A-weighting</a></li>
<li><a href="/facts/C-weighting/nvBjQ5We">C-weighting</a></li>
<li><a href="/facts/Weighting_filter/CM88XjPC">Weighting filter</a></li></ul>

<h2 id="external-links">External links</h2>
<ul><li><a href="http://noise-planet.org/">Noise-Planet: app to make an open source noise map of environmental noise</a></li>
<li><a href="https://github.com/Faiga91/Koopen">Koopen: Indoor Noise Measurement Dataset</a></li></ul>

<h2 id="references">References</h2>

<ol>
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</ol>

Noise measurement open-in-new

Noise measurement