Moving average filter cutoff frequency

1. What is the cutoff frequency of a moving average filter?
2. What is formula of average moving filter?
3. What is the effect of the moving average filter?
4. What is a good cut off frequency in low-pass filter?

What is the cutoff frequency of a moving average filter?

The cutoff frequency is defined as the frequency of the half-power point, where the power gain is a half. It's often called the − 3 d B -point, because 10 log 10 ⁡ ( 1 2 ) ≈ − 3.01 d B .

What is formula of average moving filter?

The difference equation of an exponential moving average filter is very simple: y [ n ] = α x [ n ] + ( 1 − α ) y [ n − 1 ] In this equation, is the current output, y [ n − 1 ] is the previous output, and is the current input; is a number between 0 and 1.

What is the effect of the moving average filter?

Of all the possible linear filters that could be used, the moving average produces the lowest noise for a given edge sharpness. The amount of noise reduction is equal to the square-root of the number of points in the average. For example, a 100 point moving average filter reduces the noise by a factor of 10.

What is a good cut off frequency in low-pass filter?

The cutoff frequency for a low-pass filter is that frequency at which the output (load) voltage equals 70.7% of the input (source) voltage.