What is a correct way to downsample an impulse train

1. How is downsampling done?
2. How to downsample matlab?
3. How do you downsample frequency?
4. What is impulse train sampling?

How is downsampling done?

Downsampling by an integer factor. Rate reduction by an integer factor M can be explained as a two-step process, with an equivalent implementation that is more efficient: Reduce high-frequency signal components with a digital lowpass filter. Decimate the filtered signal by M; that is, keep only every M^th sample.

How to downsample matlab?

y = downsample( x , n ) decreases the sample rate of x by keeping the first sample and then every n th sample after the first. If x is a matrix, the function treats each column as a separate sequence. y = downsample( x , n , phase ) specifies the number of samples by which to offset the downsampled sequence.

How do you downsample frequency?

A signal can be downsampled by a factor of Q by retaining every Q th sample and discarding the remaining samples. The new slower sample rate is 1/Q of the original faster sample rate.

What is impulse train sampling?

One type of sampling that satisfies the Sampling Theorem is called impulse-train sampling. This type of sampling is achieved by the use of a periodic impulse train multiplied by a continuous time signal, $ x(t) $.