Biochemical & Process Engineering

• Filter Frequency Response Characteristics:
• Band-pass filter passes signals within a designated continuous frequency band between a lower cutoff frequency ($f_1$) and an upper cutoff frequency ($f_2$), while heavily attenuating frequencies below $f_1$ and above $f_2$.
• Other Filters:
• Low-pass filter: Passes all frequencies from 0 to cutoff frequency $f_c$.
• High-pass filter: Passes frequencies above cutoff frequency $f_c$.
• Notch (Band-stop) filter: Rejects a narrow band while passing all others.
• Conclusion: Band pass filter (Option 3).

Correct option: (3) Band pass filter