 
 
 
21.5.9  Hann window
The hann_window
command applies the Hann window function
to a sequence or its segment.
- 
hann_window takes one mandatory argument
and two optional arguments:
- 
v, a real vector with length n.
- Optionally, m, N, a sequence of two integers (by default, m=0 and N=n).
 
- hann_window
returns the elementwise product of [vm,vm+1,…,vm+N−1]
and the vector w of length N defined by
| wk=sin2 | ⎛ ⎜
 ⎜
 ⎝
 |  | ⎞ ⎟
 ⎟
 ⎠
 | ,
   k=0,1,…,N−1. |  
 
Example
| listplot(hann_window([1$1000])) | 
 
 
