数字信号实验1..docxVIP

2.Doc convDescriptionLet m = length(u) and n = length(v) . Then w is the vector of length m+n-1 whose kth element isThe sum is over all the values of j which lead to legal subscripts for u(j) and v(k+1-j), specifically j = max(1,k+1-n): min(k,m). When m = n, this givesw(1) = u(1)*v(1)w(2) = u(1)*v(2)+u(2)*v(1)w(3) = u(1)*v(3)+u(2)*v(2)+u(3)*v(1)...w(n) = u(1)*v(n)+u(2)*v(n-1)+ ... +u(n)*v(1)...w(2*n-1) = u(n)*v(n)翻译：让m =长度(u)和n =(v)。那么w是向量的长度m + n - 1 k元素是结束所有的值求和j导致法律下标u(j)和v(k + 1-j),特别是j = max(k +其它):min(k、m)。当m = n,这给了w(1)= u(1)*(1)w(2)= u(1)*(2)+ u(2)*(1)w(3)= u(1)*(3)+ u(2)*(2)+ u(3)*(1)…w(n)= u(1)* v(n)+ u(2)*(n - 1)+…+ u(n)*(1)…w(2 * n - 1)= u v(n)*(n)doc num2strThe num2str function converts numbers to their string representations. This function is useful for labeling and titling plots with numeric values.str = num2str(A) converts array A into a string representation str. Converted floating-point values have a maximum of four digits of precision, and an exponent if required. For integer values, num2str returns the exact string representation of the value.str = num2str(A, precision) converts the array A into a string representation str with the maximum number of digits specified by precision.str = num2str(A, format) converts array A using the supplied format, as described on the fprintf function reference page. By default, num2str displays floating point values using the %11.4g format (four significant digits in exponential or fixed-point notation, whichever is shorter). 翻译：num2str函数将数字转换为字符串表示。这个函数是用于标签和标题的情节与数值。str = num2str(A)将一个数组转换成一个字符串str。转换精度浮点值有最大的四个数字,和一个指数如果需要。为整数值,num2str返回的字符串表示的值。str = num2str(精度)的数组转换成字符串表示str由精密数字指定的最大数量。str = num2str(格式)转换数组使用提供的格式,如流函数参考网页上的描述。默认情况下,num2str显示浮点值使用“% 11.4 g”格式(四个有效数字在指数或定点表示法,哪个更短)。Doc filterThe filter function filters a data sequence using a digital filter which works for both real and complex inputs. The filter is a direct form II transposed implementation of the standard difference equation (see jar:file:/