[PD] band-limited square wave

[matthew jones]

Hi Johannes,

this is strange.  I'm certainly being a dunce, but I can't see how you can
get aliasing when you're already in the digital domain...??
the DAC's have reconstruction filters so there won't be any aliasing when
converted to analogue either.....????!!?!?!

any hints/prods appreciated.
regards,

Matt

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----- Original Message -----
From: "Johannes Taelman" <j0 at advalvas.be>
To: "matthew jones" <m.jones at signal.dra.hmg.gb>
Cc: "PD-List" <pd-list at iem.kug.ac.at>; "Martin Dupras"
<martin.dupras at uwe.ac.uk>
Sent: Friday, March 05, 2004 3:42 PM
Subject: Re: [PD] band-limited square wave


> Matt,
>
> None of these methods are band-limited in any sense, and will sound
> aliased.
>
> Check out Tom Schouten's creb package. I started porting it to win32,
> some objects work, but continued working other projects before finishing
> it...
>
>   j#|@
>
> matthew jones wrote:
>
> > why not an [osc~] or [phasor~] connected to a [>~]? then bandpass
filter?
> > phasor is probably nicest cos you can change the 'larger than' value
> > linearly to get pulse width modulation.
> >
> > ideally you want to subtract 0.5 ([-~ 0.5]) from the result and multiply
by
> > two ([*~ 2]) to make it a true square wave.
> >
> > Matt
>  >
> > ----- Original Message -----
> > From: "Martin Dupras" <martin.dupras at uwe.ac.uk>
> >>Does anyone know how to generate band-limited square waves (or other
> >>classi waeforms) in PD?
> >>
> >>Thanks.
> >>
> >>- martin
>
>
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>

Matt

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