[sdiy] Question for those with musical ears

Mike Bryant mbryant at futurehorizons.com
Fri Apr 16 11:46:31 CEST 2021


That's the advantage of software - it's just another virtual slider on the menus to control the filtering criteria.  Compared with searching for active bins this takes hardly any processing so I already have the code open adding something in :-)

Thanks again

-----Original Message-----
From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of Tom Wiltshire
Sent: 16 April 2021 10:37
To: rburnett at richieburnett.co.uk Burnett
Cc: synth-diy at synth-diy.org
Subject: Re: [sdiy] Question for those with musical ears

+1 agree. Good point, Gordon.

There are specific situations like this where stepping is much more noticeable.

There’s a design decision to be made over whether you choose to make something that’s good enough for all reasonable musical uses, or something that doesn’t produce audible artefacts in any situation. That’s a continuum and you choose where you think you need to be based on the criteria that are important to you (like “available hardware”, “cost”, “development time” etc etc).

Tom


> On 16 Apr 2021, at 09:15, Richie Burnett <rburnett at richieburnett.co.uk> wrote:
> 
> I think that is an important point Gordon.  The "Trill" that results from sustained jitter between two pitch quantisation levels in the presence of noise is more noticeable than an occasional little step.  So, perhaps some small amount of hysteresis in Mike's pitch tracking algorithms would help prevent this.
> 
> -Richie,
> 
> 
> 
> -----Original Message----- From: Gordonjcp
> Sent: Friday, April 16, 2021 8:34 AM
> To: synth-diy at synth-diy.org
> Subject: Re: [sdiy] Question for those with musical ears
> 
> On Thu, Apr 15, 2021 at 08:01:38PM +0100, Tom Wiltshire wrote:
>> The VCDO chip I designed only manages 6 cent steps (16 steps a semitone, actually = 6.25).
> 
> In my experiments with using Arduinos as VCDOs I used the internal ADC and 5V 1V/oct CV and got 6.25 cents per step.  This sounded pretty okay.
> 
> Driving it with a Behringer TD3 it was impossible to hear any stepping although if you were being incredibly picky you could sometime here it "jitter" between steps on sustained notes.
> 
> -- 
> Gordonjcp
> 
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