zero_crossings.m

来自「非常好的数字处理教程」· M 代码 · 共 10 行

function Nzeros = zero_crossings(signal)

    Nzeros = 0;
    for i=2:length(signal),
        if (sign(signal(i)) ~= sign(signal(i-1)))
            Nzeros = Nzeros + 1;
        end
    end