Hi Pete,

I use middle-c as 261.6255653005986 for my own scale calculations. In
my scoring libraries, I've used that as the "base frequency" and allow
users to override the base-freq if they want to start from a different
frequency.  I'm not sure how others approach it.

steven



On Tue, Sep 22, 2015 at 9:00 AM, Peter Burgess
 wrote:
> I know this isn't specifically a csound question, but figured some of you
> guys at least have probably done some temperament exploration, and I'm
> struggling to find any answers.
>
> Does anyone know if there is a standard convention for which frequency to
> use as a base point for calculating the chromatic scales of different TETs?
>
> For example, you could always take 440 as your starting point for any TET
> and always call it A4. But then when working out the new midi note numbers
> for your new temperament, it might be more convenient to synchronise C
> instead, as C-1 is taken as note 0.
>
> If there is already a standard convention for this, I'd like to work with
> it, if not, I guess I'll come up with my own convention.
>
> Pete
>
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Yeah, I decided to use C aswell in the end, for no better reason other than I used C1 as the lowest note in the project. I guess it doesn't really matter as long as I'm personally consistent, I'm not likely to work with a microtonal orchestra any time soon :D