Re: scaling fixed point numbers

raj wrote:
> Hai,
> 
> For my FIR design i am using 16-bit signed integer coefficients  from
> FDAtool instead of fixed point representation
> 
> i.e, I am scaling the values as
> 
>  0.05937194824218753891 * 65536 =3891..
> 
> whether the above scaling will alter the magnitude and phase response
> i.e.,cutoff frequency,passband and stopband attenuation setted
> 
> regards,
> raj

For a FIR filter and assuming no roundoff errors, the only thing 
affected will be the scaling of the answer.

-- 

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Do you need to implement control loops in software?
"Applied Control Theory for Embedded Systems" gives you just what it says.
See details at http://www.wescottdesign.com/actfes/actfes.html