We need to know the sample rate (in samples per second).
Enter the length of the finite-impulse response, in samples.
The larger the value, the more accurate the filter, but the slower its execution.
If you are going to execute the generated filter on a fixed-point processor,
you will want to know how the filter behaves when the coefficents are truncated to n bits.
To find out, enter the value of n in the box.
(If you are not interested in this feature, leave the field blank.
For more information, click here.)
Truncate coefficients to bits
By default, the frequency response graph has a linear magnitude scale.
If that is what you want, leave the following box blank.
If you want a logarithmic magnitude scale in dB,
enter the lower limit of the magnitude scale in dB here (e.g. -80).
Lower limit (dB), or blank for linear scale: