[sdiy] saw vs ramp, audible?

[Roman Sowa]

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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