[sdiy] saw vs ramp, audible?

[Jonatan Liljedahl]

IIRC, I switched instantly between the two.

On Mon, Dec 9, 2024 at 3:00 PM Roman Sowa <modular at go2.pl> wrote:
>
> Did you just switch immediately between 2 of those or separated them
> with like 5 seconds of silence? If it was simply A/B switching, the
> phase differences at stitching points would make huge difference and
> might even sound like pitch change.
> This fools your hearing system which uses phase difference for
> determining where the sound comes from. Like you're in the wild hunting
> for food and there's a predator hunting for you. Only the ones with good
> sense of sound direction recognition had a chance to live long enough to
> reproduce and keep the human species going.
>
> Roman
>
> W dniu 2024-12-08 o 23:12, Jonatan Liljedahl pisze:
> > I tried this some year ago, and it was an audible difference, which
> > surprised me a lot. Now I don’t remember if the difference was heard in
> > headphones but not speakers, or the other way around. And, at least my
> > brain perceives a slight pitch change between saw and ramp!
> >
> > /Jonatan
> > http://kymatica.com <http://kymatica.com>
> >
> >
> > sön 8 dec. 2024 kl. 23:00 skrev Chris McDowell via Synth-diy
> > <synth-diy at synth-diy.org <mailto:synth-diy at synth-diy.org>>:
> >
> >     Hah right, I should specify I mean theoretically! It's clear to me
> >     that a speaker or room or overlaid waveform could reveal which tooth
> >     we were dealing with.
> >
> >     Thanks for the responses. I am happy to upend my understanding of
> >     harmonics whenever necessary, but glad I don't have to today.
> >
> >     this came up because I was thinking about someone's post here or on
> >     their blog about shifting the phase of harmonics and how that can
> >     yield wave forms that look very different, but sound the same. I
> >     googled "phase shift audible waveform" or something like that to try
> >     to find the article. maybe someone remembers where that is or wrote
> >     it themselves :)
> >
> >     Cheers,
> >     Chris
> >
> >      > On Dec 8, 2024, at 3:41 PM, Tom Wiltshire <tom at electricdruid.net
> >     <mailto:tom at electricdruid.net>> wrote:
> >      >
> >      > +1 What Richie said.
> >      >
> >      > You can organise a situation in which the difference will be
> >     significant, but it involves doing something extra.
> >      >
> >      > The raw waveforms on their own? No, you can't tell. This is easy
> >     to check by building an inverting buffer and then A/B testing
> >     between the input and output of the buffer.
> >      >
> >      >> On 8 Dec 2024, at 21:15, Chris McDowell via Synth-diy
> >     <synth-diy at synth-diy.org <mailto:synth-diy at synth-diy.org>> wrote:
> >      >>
> >      >> Falling saw vs a rising ramp, is the difference audible? What is
> >     the definitive answer? I have believed for years that the difference
> >     is not audible, that maximum disconinuity followed by minimum
> >     discontinuity is what a saw or ramp is, and inverted but otherwise
> >     identical waveforms sound identical. I came across a wealth of
> >     traffic online today arguing against that. I'm super skeptical.
> >     Folks' arguments were passionate but not complete in a way that
> >     could convince me. What is the real deal here?
> >      >>
> >      >> Cheers,
> >      >> Chris McDowell
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-- 
/Jonatan
http://kymatica.com