need ur immediate help in this question

[vjfaisal]

Hi,

i want to convolve the sound .wav signal with its filtered one, what can i do ....

if i directly convolve it gives the error, please tell me what i do..

code: in matlab

y1=wavread('02.wav')

B=fir1(Wn,N,'bandpass') (Wn, and N are alredy given)
h=conv(y1,B)

please your help is required.....................

best regards

 

[cydi]

check out the size of y1. It will be a 2-d array containing 2 columns, one for L and R each. So normal 'conv' may not work. Also, check for B.. whether column or row..

 

[vjfaisal]

so give me the , how to convolve in ths situation............

 

[Robinenemy]

use conv2 i think that might help

CONV2 Two dimensional convolution.
C = CONV2(A, B) performs the 2-D convolution of matrices
A and B. If [ma,na] = size(A) and [mb,nb] = size(B), then
size(C) = [ma+mb-1,na+nb-1].
C = CONV2(HCOL, HROW, A) convolves A separably with HCOL
in the column direction and HROW in the row direction.
HCOL and HROW should both be vectors.

C = CONV2( ... ,'shape') returns a subsection of the 2-D
convolution with size specified by 'shape':
'full' - (default) returns the full 2-D convolution,
'same' - returns the central part of the convolution
that is the same size as A.
'valid' - returns only those parts of the convolution
that are computed without the zero-padded
edges. size(C) = [ma-mb+1,na-nb+1] when
all(size(A) >= size(B)), otherwise C is empty.