# Tag Info

1 vote

### Is it ok to use MATLAB ''freqs" command for Digital filters?

You should use freqz to calculate frequency response of a digital filter and freqs for an analog filter. Given a transfer ...

### Is it ok to use MATLAB ''freqs" command for Digital filters?

For discrete-time filters, such as FIR and IIR filters, the appropriate Matlab function is freqz.m. You need to evaluate the frequency response on the unit circle of the complex plane; ...
1 vote

### Proper notation for frequency response between $H(\omega)$ and $H(j\omega)$

I'm trying a guess (but that's all it s). To distinguish between complex and real numbers I put a arrow on top of the complex ones. $\vec{H}(\vec{s})$ : means $\vec{H}$ is a complex function of a ...
### Proper notation for frequency response between $H(\omega)$ and $H(j\omega)$
There's nothing that could be correct or wrong about the notations $H(j\omega)$ and $H(\omega)$, because it's just a matter of convention. The reason why some people use $H(j\omega)$ is that you can ...