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Forum: DSP FIR filter in Matlab : fixed-point


von Dmtry K. (Company: stc) (desmond_breezey)


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Hello to all!

I have created FIR filter in Matlab (FDATool), and i have simulated how 
the filter is working.

In the first time i have used floating-point, and i have taken right 
result in output signal. But in the next time i have used fixed-point, 
and it is the result of simulation .

What is it? Errors of quantization? And how i can fix it?

von fdsafdsfds (Guest)


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use floating point, relax filter constraints. But the info you provide 
is not sufficient to really help...

von Dmtry K. (Company: stc) (desmond_breezey)


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But i need fixed-point in realisation of FIR on FPGA.

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