[PD] oscillators (osc~ / cycle~) not working well in FM?

Matt Barber brbrofsvl at gmail.com
Tue Nov 24 03:31:53 CET 2015


I usually agree in cases like these, but a sinusoid oscillator with
built-in DC is not the expected behavior in most any synthesis environment.
Notice how everyone in this thread was genuinely surprised by this behavior.

On Mon, Nov 23, 2015 at 9:20 PM, Robert Esler <robert at urbanstew.org> wrote:

> I would call this more of a feature than a bug that needs fixing.  I would
> hope that [osc~] and [cos~] don't change, simply because many of us like
> these little nuances.
>   If it is really bothersome then perhaps create a new version, but let’s
> not change a legacy object.  A simple “fix” might break someone else’s
> patch.
>
> Just my opinion,
> -Rob
>
> Did you make it work in a patch? if so, can you share it? :)
>
> Maybe someone could work on a "fix" on the source and send it to miller,
> perhaps this could be updated for the next version release (0.47).
>
> cheers
>
> 2015-11-22 19:32 GMT-02:00 Matt Barber <brbrofsvl at gmail.com>:
>
> Yeah, so all that really needs to be done is to force symmetry by copying
> the 0-pi phase inverted to the pi-2pi phase + guard points for [tabosc4~].
> I did that and it's been stable for 3.5 hours. It wouldn't be too hard to
> fix this in the Pd source; it would be a marked improvement to [osc~] even
> with the 512-pt table and linear interpolation.
>
>
>
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