How to make convolution between two signals?

If I have x[n] = δ[n] + 2 δ[n-1]- 3 δ[n-4] and h[n] = 3 δ[n]+2 δ[n-1]. Plot x[n], h[n], and then plot the convolution x[n]*h[n].

Answer 1

[Matt J]

See also the convn method of this class

http://www.mathworks.com/matlabcentral/fileexchange/29832-n-dimensional-sparse-arrays

Answer 2

[Muruganandham Subramanian]

>>doc conv

Refer this also:

http://www.mathworks.in/matlabcentral/fileexchange/23402-convolution-in-matlab-without-using-convxh

Answer 3

[Wayne King]

    x = [1 2 0 0 -3];
    h = [3 2];
    y = conv(x,h);
    subplot(311)
    stem(0:4,x,'markerfacecolor',[0 0 1])
    set(gca,'xlim',[0 5]);
    subplot(312)
    stem(0:1,h,'markerfacecolor',[0 0 1])
    set(gca,'xlim',[0 5]);
    subplot(313)
    stem(0:5,y,'markerfacecolor',[0 0 1])
    set(gca,'xlim',[0 5]);

[Saso sasose]

this is for (n ) but what would I do if I need continuous convolution

[Matt J]

That would be a symbolic operation. You could use the command int in the Symbolic Math Toolbox to implement the continuous convolution integrals symbolically.