[PD] [env~] issues

Alexandre Torres Porres porres at gmail.com
Tue Dec 16 16:07:23 CET 2014


nevermind, I thought it was for feedback, but I see what it looks like now

2014-12-16 13:04 GMT-02:00 Alexandre Torres Porres <porres at gmail.com>:
>
> >  seems similar to  the one used to make delay line
> > shorter than one block.
>
> and how is that trick? :)
>
> 2014-12-16 11:41 GMT-02:00 IOhannes m zmölnig <zmoelnig at iem.at>:
>>
>> On 12/15/2014 11:53 PM, Raphaël Ilias wrote:
>> > Ok, I get the trick, it seems similar to  the one used to make delay
>> line
>> > shorter than one block.
>> > However, I still feel that an object "give-me-RMS enveloppe-on-bang"
>> (for
>> > the last N samples or blocks) would appear to me an easier way to handle
>> > this case.
>> > If it doesn't exist, I'll try to build something like this... one day !
>> > Many thanks !
>>
>> oh, but that is just trivial:
>>
>> messages and signals are always calculated one after each other (first
>> all messages; once they are done, signals are processed).
>>
>> so an even easier way would be to use a latch ([f]) and [bang~]+[del 0]
>> to do the calculation in msg-domain.
>> [bang~] will output a bang before each signal block (or after; it really
>> will trigger a bang before the *next* signal block).
>> unfortunately, this bang can happen before or after the events sent out
>> by [env~], so we need to make sure to get an event *after* all [env~]s
>> have triggered.
>> the simplest way to achieve this is by using an additional [delay 0],
>> which will schedule an event at the same logical time NOW but after all
>> events already scheduled for NOW (e.g. those from [env~]).
>>
>> see attached patch. (in the attached patch i wasn't able to trigger an
>> undesired behaviour without the [delay 0]; however i haven't tried hard
>> and i'm pretty sure that you *can*; thus you should use [del 0])
>>
>>
>> mfgadsr
>> IOhannes
>>
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