decibelA
DecibelA is a proposed logarithmic unit intended to express the magnitude of a quantity that scales with waveform amplitude, in a way that mirrors how the decibel is used for sound pressure and power in acoustics. As of now, decibelA is not a standard or officially adopted unit in physics or engineering, but it appears in theoretical discussions and speculative proposals that seek an amplitude-focused alternative to the traditional decibel.
DecibelA (symbolized as dB_A) is defined by the relation L_A = 20 log10(A / A_ref), where A is
Relation to the ordinary decibel
The ordinary decibel expresses ratios of power or intensity (10 log10) or ratios of amplitude-related quantities
DecibelA has no formal approval from major standards bodies and is rarely used outside exploratory or fictional
See also: decibel, A-weighting, logarithmic units, amplitude.