Re: [sc-users] Center and deviation from lo and hi

[Uri Sala <urisala@xxxxxxxxx>]

hey, thanks a lot!
I tried to solve the equations myself, to no avail. How did you solve it,
what factor did you isolate?



Nathaniel Virgo wrote:
> 
> Hi Uri
> 
> From solving your formulae as simultaneous equations it looks like
> deviation = lo - hi;
> center = lo/(1 - lo + hi);
> 
> hth
> Nathaniel
> 
> 
> 2009/7/23 Uri Sala <urisala@xxxxxxxxx>
> 
>> Hey
>>
>> I am controlling 2 variables, the center pitch and the deviation, through
>> 2
>> knobs. I am visualizing what this in a range slider through the following
>> formula:
>>
>> lo = center - (center * deviation);
>> hi = center + ((1 - center) * deviation);
>> This means I visualize center and dev as a sort of rrand(lo,hi).
>>
>> Now, I would also like to control these variables through the slider, 
>> but
>> I cannot seem to find the formula that gives me the center and the
>> deviation
>> knowing upper and lower limits. Any clues?
>>
>> Thanks
>> Uri
>>
> 
> 

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