I'm not so familiar with these effects, it may be a help for someone.
Here are some examples of wah-wah pedal. This effect are done by moving filter frequency, and emphasize it with resonance parameter. So with only bassline's ENVelope MODulation parameter, it can be done. But in that case,
the move of it is fixed on each note, so is something different from wah-wah pedal. To express effect of pedal, you can move frequency like a move of your foot.
By the way, to express more like voice of human, you can add one more filter in parallel. This is called formant filter.
(1) Not Filtered (5) Cut Off Freq of Bassline (9) Envelop Modulation of Bassline (13) Lowpass of Slope (17) Lowpass Filter Mod of Pulver With LFO (21) With Automation (25) By Trigger (29) Formant (33) Some Fun