[sdiy] LFO control - frequency or time?

[Tom Wiltshire]

I absolutely agree, Veronica. Above 1Hz, frequency makes sense  
(cycles per second), whereas below it time (seconds per cycle) is  
more obvious.

T.

On 2 Jun 2009, at 00:34, Veronica Merryfield wrote:

> I think the tipping point is 1hz.
>
> Above this, one probably wants to quote frequency and below this,  
> time.
>
> Veronica
>
> On 1-Jun-09, at 3:21 PM, Neil Johnson wrote:
>
>> Hi all,
>>
>> Ok, here's a good point for discussion:
>>
>> In my latest design on the bench I have a VCLFO which so far has a  
>> range of about 125us (8kHz) to roughly 120s (8mHz).  I think it  
>> could go even slower, but so far I don't have the patience to sit  
>> there with an hour-glass and time it.
>>
>> So I got to thinking: for a CONTROL oscillator is it more useful  
>> to think, and program/use/set/twiddle, in terms of TIME (how long  
>> a cycle takes) or use the same concept of FREQUENCY as for the  
>> audio oscillators?
>>
>> I open the debate with the view that it should the TIME - for a  
>> slowly-varying control signal I think it makes more sense to think  
>> in terms of how long a modulating cycle will take.  Saying	
>> 	"I want a slowly varying modulation over 54 seconds"
>> seems more natural and intuitive than saying
>> 	"I want a slowly varying modulation rate of 18.5mHz"
>>
>> Comments welcome!
>>
>> Cheers,
>> Neil
>> --
>> http://www.njohnson.co.uk
>>
>>
>>
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