www.gusucode.com > signal 工具箱matlab源码程序 > signal/+fspecs/@audioweightingwtclass/getacmasklimits.m
function [upperClass1 lowerClass1 upperClass2 lowerClass2] = getacmasklimits(~) %GETACMASKUPPERLOWERLIMITS Get the mask upper and lower limits for A and C %weighting. % Copyright 2009 The MathWorks, Inc. % Tolerances as defined in IEC 61672-1 2002-05 standard for A and C weighting % Upper limit class 1 upperClass1 = [ 3.5 3 2.5 2.5 2.5 2 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.4 1.4 ... 1.4 1.4 1.4 1.4 1.1 1.4 1.6 1.6 1.6 1.6 1.6 2.1 2.1 2.1 2.6 3 3.5 4 ].'; % Lower limit class 1 lowerClass1 = [ inf inf 4.5 2.5 2 2 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.4 1.4 ... 1.4 1.4 1.4 1.4 1.1 1.4 1.6 1.6 1.6 1.6 1.6 2.1 2.6 3.1 3.6 6 17 inf ].'; % Upper limit class 2 upperClass2 = [ 5.5 5.5 5.5 3.5 3.5 3.5 2.5 2.5 2.5 2.5 2 2 2 2 1.9 1.9 1.9 ... 1.9 1.9 1.9 1.4 1.9 2.6 2.6 3.1 3.1 3.6 4.1 5.1 5.6 5.6 6 6 6 ].'; % Lower limit class 2 lowerClass2 = [ inf inf inf 3.5 3.5 3.5 2.5 2.5 2.5 2.5 2 2 2 2 1.9 1.9 1.9 ... 1.9 1.9 1.9 1.4 1.9 2.6 2.6 3.1 3.1 3.6 4.1 5.1 5.6 inf inf inf inf ].'; % [EOF]