[PD] How to add/remove MIDI notes from a list using MIDI in and note on/off?

JC Pedroza nemesis4go10 at hotmail.com
Wed Nov 12 05:52:35 CET 2014


That implementation has some bugs.

What's the list that is supposed to be queried? If it's the [list] that is connected to print, then it isn't handling multiple notes correctly, it's not removing notes when more than one is being pressed at the same time. If it's [list prepend], then it isn't handling multiple notes correctly either, if multiple keys are pressed, when you release one it always removes the key that was first pressed and not the key that was released. 

It's also giving a lot of "HUH?" errors on note off. 

I like the simplicity, but it seems to break if more than one note-on is involved.

________________________________
> Date: Wed, 12 Nov 2014 04:17:22 +0100 
> From: colet.patrice at free.fr 
> To: nemesis4go10 at hotmail.com; pd-list at iem.at 
> Subject: Re: [PD] How to add/remove MIDI notes from a list using MIDI 
> in and note on/off? 
> 
> there was a missing connection in attached patch 
> it's corrected... 
> 
> Le 12/11/2014 04:07, patrice colet a écrit : 
> I was thinking that storing a list of midi events is useless since 
> [poly] can handle the whole process, but I might be confused, sorry for 
> that... 
> 
> Maybe attached patch is what you are looking for. 
> 
> PS: I've replaced [zl rev] with 
> 
> [swap] 
> | | 
> [pack] 
> 
> because I don't know where [zl rev] come from, it's not part of pd-vanilla. 
> less external in patching, less problem in porting 
> 
> Anyway the particular method you are trying to do could be achieved 
> with the help of [textfile] 
> Le 12/11/2014 03:20, JC Pedroza a écrit : 
> I understand what poly does, what I don't understand is how it helps to 
> solve this problem. 
> 
> Sorry for any confusion. 
> 
> ---------------------------------------- 
> Date: Wed, 12 Nov 2014 02:15:54 +0100 
> From: colet.patrice at free.fr<mailto:colet.patrice at free.fr> 
> To: nemesis4go10 at hotmail.com<mailto:nemesis4go10 at hotmail.com>; 
> pd-list at iem.at<mailto:pd-list at iem.at> 
> Subject: Re: [PD] How to add/remove MIDI notes from a list using MIDI 
> in and note on/off? 
> 
> I don't understand why not doing this: 
> 
> [notein] 
> | | 
> [poly] 
> 
> It seems to be the same thing. 
> 
> from [poly] help file: 
> 
> "The [poly] object takes a stream of pitch/velocity pairs and outputs 
> triples containing voice number, pitch and velocity. 
> You can pack the output and use the route object to route messages 
> among a bank of voices depending on the first outlet. 
> [poly] can be configured to do voice stealing or not (the default.)" 
> 
> 
> Le 12/11/2014 00:13, JC Pedroza a écrit : 
> Right now I'm handling MIDI note on/off like this:<br><br><div 
> id="inlineImage0" style="display: inline-block"><script 
> type="jsv#1086_"></script> <span contenteditable="true"> </span> 
> <div style="display: inline-block" unselectable="on" 
> contenteditable="false" class="inlineImage" initheight="257" 
> initwidth="377"><img src="cid:inlineImage0"<https://cid:inlineImage0> 
> height="257" width="377"></div> <span 
> contenteditable="true"> </span><script 
> type="jsv/1086_"></script></div><br>(also including this file as 
> attachment)<div><br></div><div>The idea for now is that left outlet 
> (note on) adds the MIDI note to the list, and right outlet (note off) 
> deletes that note from the list. <span style="font-size: 
> 12pt;">That's where I'm stuck at the moment. </span><span 
> style="font-size: 12pt;"> Can [poly] help me implement that 
> logic? </span></div><div><br></div><div>I'm using [list-extend] to 
> add the notes to a list, but I can't figure out how to remove the note 
> from the list once the key is released (note off). I think I need to 
> use a combination of [list-find] and [list-delete], but I can't make 
> make it 
> work.</div><div><br></div><div><br></div><div>----------------------------------------<br>> 
> Date: Tue, 11 Nov 2014 23:23:22 +0100<br>> From: 
> colet.patrice at free.fr<mailto:colet.patrice at free.fr><br>> To: 
> pd-list at lists.iem.at<mailto:pd-list at lists.iem.at><br>> Subject: Re: 
> [PD] How to add/remove MIDI notes from a list using MIDI in and note 
> on/off?<br>><br>> hi,<br>> what about using [poly] 
> instead?<br>><br>><br>> Le 11/11/2014 13:53, JC Pedroza a 
> écrit :<br>> > I need to populate a list with the MIDI notes that 
> are being pressed, and remove the note from the list when the key is 
> released.<br>> ><br>> > One idea is to use [notein], and if 
> the velocity is> 0 then add the note to the list, and if the 
> velocity == 0 then remove the note from the list. But I have no idea of 
> how to implement this.<br>> ><br>> > I think I need 
> [list-extend], [list-find], and [list-delete], but I just can't figure 
> out an implementation.<br>> ><br>> > How can I do 
> this?<br>> > 
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