Can I please know what the meaning of these commands are, and what they do?

Can I please know what the meaning of these commands are, and what they do?

[Cris LaPierre]

If you have some time while you wait for an answer, you should go through MATLAB Onramp.

In particular, Ch 2, 4, 7 and 12 should give you enough to write the code above yourself.

[Walter Roberson]

See filter

Answer 1

[Amith]

As per my understanding you wanted to know the meaning of the commands provided ,here is a brief summary of the commands with their documentation link.

Filter

y = filter(b,a,x) filters the input data x using a rational transfer function defined by the numerator and denominator coefficients b and a.

For further detailed documentation on filter please refer to this link –

1-D digital filter - MATLAB filter (mathworks.com)

Length

length(X) returns the length of the largest array dimension in X

For further detailed documentation on length please refer to this link –

Length of largest array dimension - MATLAB length (mathworks.com)

Zeros

Create array of all zeros

For further detailed documentation on zeros please refer to this link –

Create array of all zeros - MATLAB zeros (mathworks.com)

Randi

Randi provides Uniformly distributed pseudorandom integers

For further detailed documentation on randi please refer to this link –

Uniformly distributed pseudorandom integers - MATLAB randi (mathworks.com)

Cos

Cos function provides Cosine of argument in radians

For further detailed documentation on Cos please refer to this link –

Cosine of argument in radians - MATLAB cos (mathworks.com)