Re: Generating noise in VHDL-AMS

Dear all,
Thank you, Dr.Olivier Rolland, I went to your site and I didn't find this
noise generator application. Please if you can send the link to it. And give
me more info about it.

Joachim,
I don't know how to thank you, This info that you have provided me was very
useful.
Regarding this solution:"I am not quite sure if I understand the problem.
What you can do is to
update a real-valued signal in a process and assign the value
to a quantity using for instance the 'RAMP attribute. The signal has
to be declared outside the process."
I didn't try it,but I was concerned to thank because the link that you gave
me was very helpful for me. I will try it soon, may be in the next 2 days.
If it worked, I will send the code with it so it can be like a sample for
anyone else.

Thank you,
Amro

On 3/13/06, Dr. Olivier Rolland <olivier.rolland@systemsvip.com> wrote:
>
> Amro,
>
> We are developping a noise generator application which creates
> automatically  the adequate VHDL-AMS code for temporal discrete noise
> (graphically spectrally defined with a shape over any branch desired of
> 1/f**n asymptotic slop, n belonging to Z). This application will be
> provided as an ASP on our web site.
> If you want  more information, please feel free to contact us.
> Regards.
>
> Olivier Rolland
>
> Dr. Olivier Rolland
> Systems'ViP
> c/o SEMIA
> 4, rue Boussingault
> F-67000 Strasbourg
>
> Tel:   +33 671 128 130
> Email: olivier.rolland@systemsvip.com
> Web:   http://www.systemsvip.com
>
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>
> Amr Turk wrote:
> > Dear Joachim Haase,
> > Thank you, for your support. But actually,I used this solution. But if
> > there is a solution that is can be in the VHDL code without using eldo
> > noise source, I would be grateful if someone point it out.
> >
> > By the way, there is a function : Uniform in IEEE.MATH_REAL that
> > generates random number from 0.0 to 1.0 uniformly distributed. But the
> > problem is :
> > 1- This functions need variables, which mean needs process. I don't
> > know a way, to assign a quantity with a varaible through the process.
> > Which make it finally, don't work for Analog.
> > 2- The noise actually is gaussian distributed, But this one is
> > uniform. But still can work.
> >
> > Finally, Thank you for your post, I was delighted to see it.
> >
> > Amro Tork
> >
>