[PD] line: grain rate and delta

[tim vets]

2010/10/21 tim vets <timvets at gmail.com>

>
>
> 2010/10/21 IOhannes zmölnig <zmoelnig at iem.at>
>
> On 10/21/2010 03:30 PM, tim vets wrote:
>> > Hi all,
>> > I'm a bit confused about the grain rate of [line]
>> > the help says that 'the default grain rate is 20 ms'
>> > however, when I connect a [delta] to a [line], it shows zero's,
>> > while inserting a [speedlim 20] changes that.
>> > also some other tests in attached patch.
>> > can someone explain ?
>>
>> as matju already stated, [delta] is something, a lot of people
>> (including me) do not know.
>>
>> assuming it is the same as:
>> |
>> [t b b]
>> |     |
>> [timer]
>> |
>>
>> then it "looks" like you get "0", whereas in reality you get:
>> [20, 0( [*]
>>
>> the "20" shows up so incredibly short (and is then overwritten by "0",
>> that you simply cannot see it.
>> [print] usually allows you to track such things, as you not only see the
>> last value, but the entire history.
>>
>> [*] why?
>> when [line] receives a new target, it will immediately send out the
>> start value, and then (in grain-time ms) the next value until it reaches
>> the target value.
>> in your case this translates to:
>> - you generate the first number ("7") and send [7 20( to [line]
>> - line will immediately output the current value ("0") and after 20ms it
>> will output the next value ("7")
>> - at the "same" time, you generate a new value ("9"), and send this to
>> [line], which will immediately output the current value ("7").
>>
>> since both the start value and the target value are output at the same
>> logical time, [timer] caluculates a time-difference of "0", which will
>> be visible for the next 20ms.
>>
>>
>
> the way I understood it, [delta] is the equivalent of:
> [image: delta.png]
> I also don't know where I got [delta] from, it doesn't seem to have a help
> patch associated with it.
> anyways, replacing [delta] with the above gives the same result.
> but I'm starting to see why...
> Tim
>
> btw: this fixed my 'problem':

[line]
|
[change]
|
[delta]

gr,
Tim


>
>> gmadr
>> IOhannes
>>
>>
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