You are tasked with designing a data acquisition system to digitize a $0-100$mVpeak audio signal with a frequency range of $20$ Hz to $20$ kHz$.$ The system must meet the following specifications: reduce$/$eliminate noise and use an $8-$bit ADC with $1$ Vref.

a$.$Draw the electrical circuit schematic for the signal conditioning circuit using ideal op$-$amps.

b$.$Determine the minimum sampling rate required to avoid aliasing.

c$.$Discuss the importance of an anti$-$aliasing filter in this design.