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Weighting curve - Wikipedia
https://en.wikipedia.org/wiki/Weighting_curve#:~:text=A%20weighting%20curve%20is%20a%20graph%20of%20a,D-weighting%20as%20defined%20in%20IEC%2061672%20are%20used.
Frequency-Weightings for Sound Level Measurements - …
https://www.nti-audio.com/en/support/know-how/frequency-weightings-for-sound-level-measurements
A-weighting curve
https://findatwiki.com/A-weighting_curve
A-weighting is the most commonly used of a family of curves defined in the International standard IEC 616722003 and various national standards. A-weighting. ... Video illustrating A-weighting by analyzing a sine sweep (contains audio)
A-Weighting Filter For Audio Measurements
https://sound-au.com/project17.htm
At a rough guess I would suggest the A-weighting curve may have some small relevance somewhere around 40dB SPL (unweighted!) and below. However ... Any noise measured using A-weighting must be free from tonality or rhythm, and will be a broad bandwidth random signal.
Frequency weightings: A, B, C and Z - Doctor Pro Audio . com
https://www.doctorproaudio.com/content.php?2279-frequency-weightings-abc&langid=1
To try and approximate acoustical analyzers to the response of the ear, frequency weighting curves were created. These are simplified versions of the ears' frequency response at different levels. Thus, for low sound pressure levels, the A weighting is used, which provides substantial low frequency attenuation (-50 dB at 20 Hz and almost -20 dB at 100 Hz) and some high …
A-, B-, C- and D-weighting curves
https://onlinelibrary.wiley.com/doi/pdf/10.1002/9780470869253.app4
A-, B-, C- and D- weighting curves according to [178, 179]. Note that for each relative frequency response point there is an associated measurement tolerance, which can be found from the associated recommendation. Reproduced by permission of International Electrotechnical Commission (IEC).60
Audio: A-Weighted Curve algorithm - Unity Forum
https://forum.unity.com/threads/audio-a-weighted-curve-algorithm.272283/
Btw, A-weighting actually isn't a very good representation for human hearing. Instead of A-weighting you can using AnimationCurves to define a frequency response similar to Fletcher-Munson curves that better approximates human …
Frequency Weighting of Signal Levels – Discovery of …
https://dosits.org/science/advanced-topics/frequency-weighting-of-signal-levels/
The 40-phon equal-loudness function, called A-weighting and the 100-phon function, called C-weighting, are used to filter environmental noise and optimize hearing aids, sound level meters, and other measurement devices for human hearing sensitivities. Left side – Equal Loudness Contours are shown in red.
Frequency Weighting Equations - Cross-spectrum
https://www.cross-spectrum.com/audio/weighting.html
Ra (f)=. 12200 2 *f 4. (f 2 +20.6 2 ) (f 2 +12200 2 ) ( (f 2 +107.7 2) 0.5 ) ( (f 2 +737.9 2) 0.5 ) These filters show a loss at 1kHz of 2.0dB ,0.17dB , 0.06dB for A , B and C weightings respectively and , since it is usual to normalise the response of each filter to 1kHz , this loss must be added to the to the modulus .
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