I am writing some simple matlab code to refresh my convolution knowledge (it has been awhile) in regards to DSP. I have an input signal x and a filter -
x = [1 3 6 2 8]; h = [2 9 5 3]; y=conv(x,h);
which results in
y = [2 15 44 76 73 100 46 24];
I understand these values are large because convolution has lots of multiplication and addition, however if this was an audio signal I was trying to filter, these values seem very large.
Do I need to scale the input filter or output signal some how? If so which one and by how much?