*Question E7F12:
Which of the following is generally true of Finite Impulse Response (FIR) filters?*  

*Correct Answer is  A: FIR filters can delay all frequency components of the signal by the same amount*  

### AI Response: (may contain errors)  

To understand the characteristics of Finite Impulse Response (FIR) filters, let's analyze the correct answer and the other choices.

### Correct Answer: 
**A: FIR filters can delay all frequency components of the signal by the same amount.**

- **Explanation**: FIR filters are linear phase filters, which means they can introduce a constant delay across all frequency components of the input signal. This property ensures that the waveform shape of the signal is preserved, making FIR filters particularly useful in applications where phase distortion must be minimized.

### Why the Other Choices are Incorrect:

**B: FIR filters are easier to implement for a given set of passband rolloff requirements.**

- **Explanation**: While FIR filters can be designed to meet specific rolloff requirements, they often require a higher order (more coefficients) than Infinite Impulse Response (IIR) filters to achieve the same performance in terms of rolloff. Therefore, they are not necessarily easier to implement for a given set of requirements.

**C: FIR filters can respond faster to impulses.**

- **Explanation**: The response speed of a filter to an impulse is not inherently faster for FIR filters compared to IIR filters. The response time depends on the filter design and the number of taps (coefficients) used. FIR filters can have a longer response time due to their potentially higher order.

**D: All these choices are correct.**

- **Explanation**: Since choices B and C are incorrect, this choice cannot be correct either. Not all statements about FIR filters are true.

### Summary of FIR Filter Characteristics:
- **Linear Phase**: FIR filters maintain the shape of the input signal.
- **Constant Delay**: They can delay all frequency components equally.
- **Implementation Complexity**: FIR filters may require more resources for certain specifications compared to IIR filters.

This understanding of FIR filters will help you in the Extra Class exam and in practical applications of signal processing.