[PD] Moving Sum object?

[Alexandre Torres Porres]

I just wish we could make it work over the half block limit, and I'm not
sure why the other patches don't work but this does.

2015-12-08 15:53 GMT-02:00 Alexandre Torres Porres <porres at gmail.com>:

> here's a better patch
>
> 2015-12-08 15:44 GMT-02:00 Alexandre Torres Porres <porres at gmail.com>:
>
>> I've made it work with this design in fexpr, but it's only good up to
>> half the block size
>>
>>
>> 2015-12-08 15:21 GMT-02:00 Alexandre Torres Porres <porres at gmail.com>:
>>
>>> As I say in the attached patch; problem is that whenever you change the
>>> number of samples without clearing or clearing the filter, it goes crazy...
>>>
>>> not sure how to fix this.
>>>
>>> cheers
>>>
>>>
>>> 2015-12-08 10:40 GMT-02:00 Christof Ressi <christof.ressi at gmx.at>:
>>>
>>>> the filter is working perfectly well for me. send me your testing patch.
>>>>
>>>>
>>>>
>>>> Gesendet: Dienstag, 08. Dezember 2015 um 13:36 Uhr
>>>> Von: "Alexandre Torres Porres" <porres at gmail.com>
>>>> An: "Christof Ressi" <christof.ressi at gmx.at>
>>>> Cc: "pd-list at lists.iem.at" <pd-list at lists.iem.at>
>>>> Betreff: Re: Re: Re: [PD] Moving Sum object?
>>>>
>>>> not sure this is working either, I'm getting negative values when
>>>> testing it with count~ (only positive values)
>>>>
>>>> 2015-12-08 10:30 GMT-02:00 Christof Ressi <christof.ressi at gmx.at>:It
>>>> certainly is and I have no idea how that happened :-D. but it has no effect
>>>> whatsoever. just delete the connection.
>>>>
>>>>
>>>> Gesendet: Dienstag, 08. Dezember 2015 um 13:20 Uhr
>>>> Von: "Alexandre Torres Porres" <porres at gmail.com[porres at gmail.com]>
>>>> An: "Christof Ressi" <christof.ressi at gmx.at[christof.ressi at gmx.at]>
>>>> Cc: "pd-list at lists.iem.at[pd-list at lists.iem.at]" <pd-list at lists.iem.at[
>>>> pd-list at lists.iem.at]>
>>>> Betreff: Re: Re: [PD] Moving Sum object?
>>>>
>>>> what was the purpose of the output from the max object into rpole~ in
>>>> your patch? that's a bug, right?
>>>>
>>>> cheers
>>>>
>>>> 2015-12-08 9:50 GMT-02:00 Christof Ressi <christof.ressi at gmx.at[
>>>> christof.ressi at gmx.at]>:
>>>>
>>>> Or are you talking about a object that outputs the sum as a message? In
>>>> that case just use [cmavg~] or [maverage~] with [snapshot~]. If you just
>>>> want the sum of a signal vector, there are some objects in zexy that will
>>>> do the job, like [avg~] or [pack~]+[sum]
>>>>
>>>>
>>>> Gesendet: Dienstag, 08. Dezember 2015 um 12:41 Uhr
>>>> Von: "Christof Ressi" <christof.ressi at gmx.at[christof.ressi at gmx.at][
>>>> christof.ressi at gmx.at[christof.ressi at gmx.at]]>
>>>>
>>>> An: "Alexandre Torres Porres" <porres at gmail.com[porres at gmail.com][
>>>> porres at gmail.com[porres at gmail.com]]>
>>>> Cc: "pd-list at lists.iem.at[pd-list at lists.iem.at][pd-list at lists.iem.at[
>>>> pd-list at lists.iem.at]]" <pd-list at lists.iem.at[pd-list at lists.iem.at][
>>>> pd-list at lists.iem.at[pd-list at lists.iem.at]]>
>>>> Betreff: Re: [PD] Moving Sum object?
>>>>
>>>> Well, a linear moving average filter is just something that  sums a
>>>> series of samples. If you don't want the average but rather the true sum,
>>>> either multiply the output by the number of samples or take my abstraction
>>>> and get rid of the [/~] object.
>>>>
>>>>
>>>> Gesendet: Dienstag, 08. Dezember 2015 um 12:21 Uhr
>>>> Von: "Alexandre Torres Porres" <porres at gmail.com[porres at gmail.com][
>>>> porres at gmail.com[porres at gmail.com]]>
>>>> An: "Christof Ressi" <christof.ressi at gmx.at[christof.ressi at gmx.at][
>>>> christof.ressi at gmx.at[christof.ressi at gmx.at]]>
>>>> Cc: "Matt Barber" <brbrofsvl at gmail.com[brbrofsvl at gmail.com][
>>>> brbrofsvl at gmail.com[brbrofsvl at gmail.com]]>, "pd-list at lists.iem.at[
>>>> pd-list at lists.iem.at][pd-list at lists.iem.at[pd-list at lists.iem.at]]" <
>>>> pd-list at lists.iem.at[pd-list at lists.iem.at][pd-list at lists.iem.at[
>>>> pd-list at lists.iem.at]]>
>>>> Betreff: Re: Re: [PD] Moving Sum object?
>>>>
>>>> cool guys, but i was asking for an average "sum" object :)
>>>>
>>>> 2015-12-08 9:19 GMT-02:00 Christof Ressi <christof.ressi at gmx.at[
>>>> christof.ressi at gmx.at]>:Hey Matt,
>>>>
>>>> there's no need for the feedback path (and therefore no [block~ 1] ;-))
>>>>
>>>> Just use the following formula:
>>>>
>>>> y[n] = (y[n-1] - x[n-k])/k
>>>>
>>>> where k is the number of samples to be averaged (must be at least 1).
>>>> see the patch I sent to Alex in my last mail.
>>>> it uses [rpole~ 1] for the y[n-1] part and [z~ k] for the x[n-k] part
>>>> (you can replace the latter one with a [delwrite~] [delread~] pair to make
>>>> it purely vanilla).
>>>>
>>>> The funny thing about linear moving average filters is, that although
>>>> it can be implemented as a recursive filter (like in both our patches), it
>>>> is still a FIR filter (and therefore it defeats the notion that recursive
>>>> filters are always IIR filters). The impulse response is just a rectangular
>>>> pulse and therefore finite.
>>>>
>>>>
>>>>
>>>> Gesendet: Dienstag, 08. Dezember 2015 um 07:13 Uhr
>>>> Von: "Matt Barber" <brbrofsvl at gmail.com[brbrofsvl at gmail.com]>
>>>> An: "Alexandre Torres Porres" <porres at gmail.com[porres at gmail.com]>
>>>> Cc: "pd-list at lists.iem.at[pd-list at lists.iem.at]" <pd-list at lists.iem.at[
>>>> pd-list at lists.iem.at]>
>>>> Betreff: Re: [PD] Moving Sum object?
>>>>
>>>> Something like this? Almost completely untestsed. :D
>>>>
>>>> On Tue, Dec 8, 2015 at 12:20 AM, Alexandre Torres Porres <
>>>> porres at gmail.com[porres at gmail.com]> wrote:
>>>>
>>>> Talking about averages I wonder if we have an object that sums (in a
>>>> moving average fashion) a series of samples
>>>>
>>>> cheers
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>>>>
>>>
>>>
>>
>
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