Standard Levels

The Standard levels profile computes the Leq in RMS, dB SPL, dB A, dB B, and dB C.

LRMS refers to the equivalent RMS level, that is to say the average signal energy over time. "RMS" stands for "root mean square".

Where:

  • Leq is the RMS equivalent level expressed in dB.

  • Leq dB(A) is the A-weighted version of Leq, expressed in dB A. In other words, it is the RMS equivalent level of the A-weighted signal, according to the method explained here: Applying a Frequency Weighting to a Signal.

  • Leq dB(B) is the B-weighted version of Leq, expressed in dB B. In other words, it is the RMS equivalent level of the B-weighted signal, according to the method explained here: Applying a Frequency Weighting to a Signal.

  • Leq dB(C) is the C-weighted version of Leq, expressed in dB C. In other words, it is the RMS equivalent level of the C-weighted signal, according to the method explained here: Applying a Frequency Weighting to a Signal.