(5) FIR filter experiments

Numeric cutoff frequency

Desired frequency response

Corresponding approximate impulse response function (with delay)

Corresponding frequency response

As a function of θ

As a function of

Experiment #1

Input (50Hz cosine)

Output

A closer look

Frequency content of steady-state signals

Experiment #2

Input (50Hz cosine + 75Hz cosine)

Output

A closer look

Frequency content of steady-state signals

Experiment #3

Input (50Hz cosine + 150Hz cosine)

Output

A closer look

Frequency content of steady-state signals

Experiment #4

Input (50Hz cosine + 105Hz cosine)

Output

A closer look

Frequency content of steady-state signals