Sinusoidal

Moving Average of sinusoid

Moving Average of sinusoid
  1. What is the formula of a sinusoidal wave?
  2. How do you calculate sinusoidal signal?
  3. Is a moving average a low pass filter?

What is the formula of a sinusoidal wave?

A sinusoidal alternating current can be represented by the equation i = I sin ωt, where i is the current at time t and I the maximum current. In a similar way we can write for a sinusoidal alternating voltage v = V sin ωt, where v is the voltage at time t and V the maximum voltage.

How do you calculate sinusoidal signal?

We imagine a sinusoidal signal y=Y sin ωt, i.e. amplitude Y and angular frequency ω, as being produced by a radial line of length Y rotating with a constant angular velocity ω (Figure 11.2), taking the vertical projection y of the line at any instant of time to represent the value of the sinusoidal signal.

Is a moving average a low pass filter?

A moving average is a low pass FIR filter, i.e., it passes frequencies below the cutoff frequency and attenuates frequencies above the cutoff frequency. (See Appendix 1 for additional details.) The value of the moving average length N determines the frequency response of the filter.

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