countoverzeroing.m

语音处理的短时时域处理技术中的短时过零率的MATLAB编程

function [sn1]=countoverzeroing(waves,n,l)
sn1=0;
for i=n-l+1:n
    sn=sign(waves(i))-sign(waves(i+1));%过零时差值为2
    sn1=sn1+abs(sn);   %求和 
end
sn1=sn1/(2*l);
return;