Usage

outsig = setdbspl(insig,lvl);
outsig = setdbspl(insig,lvl,'ac');

setdbspl(insig,lvl) sets the SPL (sound pressure level) of the signal insig to lvl dB, using the convention that a pure tone with an RMS value of 1 corresponds to 100 dB SPL.

setdbspl(lvl) returns a scaling constant that will scale a signal with RMS value of 1 to the correct level.

If the input is a matrix, it is assumed that each column is a signal.

setdbspl(insig,lvl,'ac') does the same, but considers only the AC component of the signal (i.e. the mean is removed).