convdiscrete 1-D convolution. SyntaxC = conv(A,B [,shape])ParametersA
a real or complex vector.
B
a real or complex vector.
shape
an optional character string with possible values:
"full", conv
computes the full convolution. It is the
default value.
"same", conv
computes the central part of the convolution of the same
size as A.
"valid", conv
computes the convolution parts without the zero-padding
of A.
C
a real or complex vector.
Descriptionconv uses a straightforward formal
implementation of the one-dimensional convolution equation in
spatial form.
C=conv(A,B [,shape]) computes the
one-dimensional convolution of the vectors A
and B:
With shape=="full" the
dimensions of the resultC are given by
size(A,'*')+size(B,'*')+1. The indices of the
center element of B are defined as
floor((size(B,'*')+1)/2).
With shape=="same" the
dimensions of the resultC are given by
size(A). The indices of the
center element of B are defined as
floor((size(B,'*')+1)/2).
With shape=="valid" the dimensions
of the result C are given by
size(A,'*')-size(B,'*')+1) if
and(size(A,'*')-size(B,'*'))>=0 else
C is empty . The indices of the center
element of B are defined as
1.
Note that convol can be more efficient for large arrays.
ExamplesSee also
convol
conv2
Used Functions
The conv function is based on the conv2 builtin.
History5.4.0Function conv introduced.