[PD] More teeth. Was: cyclone abstractions was: Nettles.

[Fred Jan Kraan]

Hi Alexandre,

What do you want me to check?

If comb~ and teeth~ are so close, one wonders why there are two objects
at all. In hindsight, the early development of objects in Max/MSP
doesn't look very organized. Almost like the pd-extended collection :-).

Greetings,

Fred Jan

On 2015-06-25 12:20 AM, Alexandre Torres Porres wrote:
> were you able to check it? I'm curious to see if we are on the same page :)
> cheers
> 
> 2015-06-23 13:52 GMT-03:00 Alexandre Torres Porres <porres at gmail.com
> <mailto:porres at gmail.com>>:
> 
>     > Well, not quite. You also need another delay line,
>     > as each has different input (input and output signal).
> 
>     Not really, because [comb~] also has two delay lines, one for input
>     and another for output, in the same way! The thing is that it'll
>     have the same delay time for both lines, whereas in teeth~ you can
>     specify different times for each delay.
> 
>     see my patch attached comparing them.
> 
>     cheers
> 
>     2015-06-23 12:08 GMT-03:00 Fred Jan Kraan <fjkraan at xs4all.nl
>     <mailto:fjkraan at xs4all.nl>>:
> 
>         Hi Alexandre,
> 
>         > hello, I had plans to try working on a .c code for it, and my idea was
>         > to just adapt from [comb~].
>         >
>         > Yeah... Teeth is almost identical to [comb~]!
>         >
>         > In [comb~] you have the same delay time for the feedforward and the
>         > feedback. In [teeth~] you can specify different time delays for
>         > feedforward and feedback. So you basically have only one extra time
>         > delay parameter to include in [comb~] and... voilà, you've got [teeth~]!
> 
>         Well, not quite. You also need another delay line, as each has
>         different
>         input (input and output signal). And writing code is more fun than
>         reading/understanding/adapting. I prefer the array aproach above the
>         pointer arithmetic that real programmers use :-).
>         >
>         > Hope this makes it clear for you.
>         >
>         > Cheers
> 
>         Greetings,
> 
>         Fred Jan
>         >
>         > 2015-06-23 4:56 GMT-03:00 Fred Jan Kraan <fjkraan at xs4all.nl <mailto:fjkraan at xs4all.nl>
>         > <mailto:fjkraan at xs4all.nl <mailto:fjkraan at xs4all.nl>>>:
>         >
>         >     Hi Alexandre,
>         >
>         >     Just now I completed the c code for a teeth~ object, which doesn't seem
>         >     to crash instantly and sounds* the same as your abstraction which is now
>         >     in cyclone.
>         >
>         >     The block diagram in your help patch made it very clear what should  be
>         >     coded. The only thing (what an expert told me), was that 'z' applies to
>         >     samples, and teeth~ is controlled in milli-seconds.
>         >
>         >     While coding, I found the delay time has to be zero or positive, but the
>         >     gain coefficients can be negative too, adding the delayed signal out of
>         >     phase.
>         >
>         >     I have no plans to add the object to cyclone anytime soon. First spend
>         >     some time figuring out that i really does what I think it does. It
>         >     doesn't crash instantly, and output looks sinusoid with a sinus input,
>         >     but that doesn't prove much. And at least some form of interpolation
>         >     should be added before it is ready for prime time.
>         >
>         >     Greetings,
>         >
>         >     Fred Jan
>         >
>         >     *) the help patch sounds equally weird with both, using only the
>         >     positive gains
>         >
>         >     On 2015-06-15 04:14 PM, Alexandre Torres Porres wrote:
>         >     > it's just a preview, I'm gonna still work on them and help files :)
>         >     >
>         >     > 2015-06-15 10:38 GMT-03:00 Fred Jan Kraan <fjkraan at xs4all.nl <mailto:fjkraan at xs4all.nl>
>         >     <mailto:fjkraan at xs4all.nl <mailto:fjkraan at xs4all.nl>>
>         >     > <mailto:fjkraan at xs4all.nl <mailto:fjkraan at xs4all.nl>
>         <mailto:fjkraan at xs4all.nl <mailto:fjkraan at xs4all.nl>>>>:
>         >     >
>         >     >     Hi Alexandre,
>         >     >
>         >     >     Thanks for the abstractions. I will include them in
>         the svn
>         >     repository
>         >     >     and the next binary deken compatible builds. Only
>         rect~ didn't
>         >     work.
>         >     >
>         >     >     I applied some minor modification by replacing [pi],
>         which doesn't
>         >     >     appear to be vanilla by [3.141593(.
>         >     >
>         >     >     Greetings,
>         >     >
>         >     >     Fred Jan
>         >     >
>         >     >     P.S. Wouldn't mind if the future supplied
>         help-patches were
>         >     already
>         >     >     cyclone-standard formatting ;-).
>         >     >
>         >     >     On 2015-06-14 10:14 PM, Alexandre Torres Porres wrote:
>         >     >     >> Any object or abstraction that implements something
>         >     >     >> present in Max(5) could be part of cyclone.
>         >     >     >
>         >     >     > i've made 13 abstractions so far
>         >     >     >
>         >     >     > - atodb
>         >     >     > - atodb~
>         >     >     > - dbtoa
>         >     >     > - dbtoa~
>         >     >     > - freqshift~
>         >     >     > - rect~
>         >     >     > - saw~
>         >     >     > - scale
>         >     >     > - scale~
>         >     >     > - teeth~
>         >     >     > - thresh~
>         >     >     > - tri~
>         >     >     > - trunc~
>         >     >     >
>         >     >     > Gonna try and do a few of these more, I have more
>         5 in mind
>         >     so far. I
>         >     >     > guess some make much more sense as objects, like
>         >     >     [rect~]/[tri~]/[saw~].
>         >     >     > Here's a preview attached.
>         >     >     >
>         >     >     > cheers
>         >     >
>         >     >
>         >
>         >
> 
> 
>