db2g.m~

信号与信息处理-matlab信号处理工具箱源程序集合

function gain=db2g(db)
% DB2G Converts from decibels to ratio
% 
%   gain=db2g(db)
% 
%   INPUTS
%   db = Ratio in decibels (logarithmic) [dB]
%   
%   OUTPUTS
%   gain = linear ratio [1]
% 
%   AIM:
%   To convert a ratio in decibels to a unitless ratio. Some may understand
%   this easier thinking of it as converting a logarithmic number to a
%   linear number.
% 
%   TECHNICAL BACKGROUND:
%   

gain=10^(db/10);