Construct an (audio-) equalizer with three filters:
a) A low-pass with the frequency range 0-10 kHz
b) A band-pass in the range 5-15 kHz and
c) A high-pass for frequencies above 10kHz
the three filter output signals should be added using an operational preamplification factor of V0=100. Each frequencey band of the equalizer should have its own regulation, and the power amplifier should have its own volume control.
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