Can we filter an int16 signal using filters FIR?
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The coefficients resulted in the design of the filter FIR are float, and when I try to filter the signal it just can't. I tried with "conv", is there a way?
Best regards, Marcelo
1 Commento
Jan
il 1 Gen 2014
What does "it just can't" explicitly mean? Pleas post the error message and define the input arguments exactly. The less we have to guess, the easier is an answer.
Risposte (3)
Wayne King
il 1 Gen 2014
Jan is correct about making your post clear.
If you are using conv(), the help for conv() states that the only supported data types are:
float: double, single
So why not cast your input to double()?
conv(double(x),B)
where B are the filter coefficients.
Or better yet, use filter()
y = filter(B,1,double(x));
0 Commenti
Jan
il 1 Gen 2014
Modificato: Jan
il 1 Gen 2014
What about converting the signal to a double temporarily?
y = int16(filter(B, A, double(YourINT16Signal)));
A C-Mex version of FILTER can be found in the file exchange and it can be adjusted to integer types. But the conversion to double seems to be the most elegant way, if it is not impeded by the memory consumption.
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Sangroku
il 1 Gen 2014
Modificato: Sangroku
il 1 Gen 2014
1 Commento
Wayne King
il 1 Gen 2014
How is this at all related to your original post about filtering?
Have you tried reading the file with the 'native' option.
[s1,fs] = wavread('C:\Users\user\Desktop\ex.wav','native');
What datatype does that give s1?
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