blackman and flattopwin cannot be used with pwelch

[David Bateman]

Francesco Potorti` wrote:
>>> pwelch.m as distributed in the signal package of octave-forge does not
>>> accept a window with negative values.  However, blackman(4096) and
>>> flattopwin(4096) generate negative values.
>>>
>>> I suspect that as far as blackman is concerned, it is just a rounding
>>> error, but flattopwin definitely generates negative values.
>>>   
>>>       
>> Could you propose a fix?
>>     
>
> I fixed it in my copy by simply removing the check on windows' negative
> values.  If you want, I can update the doc strings, too.  It is a very
> quick fix.
>
>   
Sure, that would be good.

D.

-- 
David Bateman                                David.Bateman at motorola.com
Motorola Labs - Paris                        +33 1 69 35 48 04 (Ph) 
Parc Les Algorithmes, Commune de St Aubin    +33 6 72 01 06 33 (Mob) 
91193 Gif-Sur-Yvette FRANCE                  +33 1 69 35 77 01 (Fax) 

The information contained in this communication has been classified as: 

[x] General Business Information 
[ ] Motorola Internal Use Only 
[ ] Motorola Confidential Proprietary