Adjusting the width still doesn't explain how to adjust the taper or amplitude of each tone. How do we adjust the shape of the response Curve without using an equalizer? Certain frequencies are best used in moderation so how do we moderate those particular frequencies? Like I said, this gets pretty deep. Lot's of folks like to oversimplify things while saying that I overcomplicate things. Since export radios are cheap contraptions without DSP, it becomes more complicated to manually process that speech using diodes, resistors, and capacitors.