/usr/share/psychtoolbox-3/Psychometric/DbToLog.m is in psychtoolbox-3-common 3.0.9+svn2579.dfsg1-1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 | function logUnits = DbToLog(dbUnits)
% logUnits = DbToLog(dbUnits)
%
% Convert from decibels to log units.
%
% 1/5/95 dhb Wrote it.
logUnits = dbUnits/20;
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