www.gusucode.com > signal 工具箱matlab源码程序 > signal/+signal/+internal/+reassignSpec/centerfreq.m
function f = centerfreq(f) n = numel(f); if n/2==round(n/2) %even (nyquist is at end of spectrum) f = f - f(n/2); else % odd f = f - f((n+1)/2); end