Can someone give my a link to study to solve this problem. I can not find any formula for this problem...
Suppose we filter singals with the below pre-emphasis filter:
$y(n)=x(n) - ax(n-1)$
How can I compute $a$ if I know that:
- length 100 in which 98 is zero.
- Frequency response at 2100Hz is 1.3429 dB
I don't want the solution only a hint I found this in my notes: 10log10(a^2*w^2+1)=db but with this formula i don't use some information which given.