16 Jan
2008
16 Jan
'08
10:09 p.m.
Hello,
Looking for a way to 'elongate' the period of MIDI events.
Doctor, what should I do to please her ears ?
Seriously, the problem is, Qsynth cannot play any MIDI note that is
played by a percussive MIDI pad, in this case the Alesis Control Pad
played with drum sticks. Here's the thing (cheap at some $250 brand
new):
http://www.alesis.com/product.php?id=103
It's as plain and simple as that. Can anyone
verify it ? Start up Qsynth, load the Chromium sound font, pick a piano
sound, connect a MIDI percussive instrument, and try to play 10
consecutive, clear notes. No way. Try then with a percussive
soundfont. A drum set.
Now, do the same with Hydrogen and the same MIDI pad. Works nicely.
Velocity works also nicely. Now make it take into account MIDI note offs
(it's in the Preferences, the default being to ignore them). You'll
see that although most notes play OK, some are clipped.
Try also with WhySynth. Some patches work OK, some don't. When they
work, they even work with drum stick rebounds, as with Hydrogen.
From Kmidimon, the Alesis Control Pad MIDI notes, when hit with drum
sticks, last typically 1 unit of time (whatever unit that is) eg.:
Time Event Data1 Data2
89985 Note on 63 0
89984 Note on 63 55
Whereas the shortest note I can do on an Axiom 25 keyboard looks like:
Time Event Data1 Data2
41067 Note on 89 00
41051 Note on 89 94
That's a whole 16 units of whatever time. Same with the Axiom's
pads: they last a long time and thus, interact OK with Qsynth.
My theory about Qsynth (Fluidsynth...) is that the MIDI notes sent by
the MIDI percussion instrument are too short for it to pick them up.
Could that be ? It'd be nice to play all those available percussive
soundfonts using a MIDI percussion controller. Wprks all right with
Hydrogen, but not with Qsynth. Should Alesis make their Control Pad
send longer MIDI notes ? Or have a programmable parameter for each
note ? I don't know. Hydrogen works, but not Qsynth.
But then, can there be a default note length ? I would be glad to
set some default note length. I could even take the time to set notes
lengths according to soundfonts and load them with the instruments...
as long as there's a filter that could do that.
So, is there a MIDI filter out there that would enable something like
this ? To make (all or specific) MIDI notes last longer ?
Thanks for reading, and do not hesitate to throw suggestions.
Jam, no spam,
Al
17 Jan
17 Jan
4:48 a.m.
i don't know of any specifics, but in theory i can think of two ways to do
it: one is to add a constant time offset to any 'note off' or 'note on with
0 velocity' event, and the other is to ignore those events and add them in
manually by taking the normal note on event and adding a note off (or 0)
event with a constant offset. don't know what things you can do it in
though, maybe puredata?
porl
On 17/01/2008, lanas <lanas(a)securenet.net> wrote:
Hello,
Looking for a way to 'elongate' the period of MIDI events.
Doctor, what should I do to please her ears ?
Seriously, the problem is, Qsynth cannot play any MIDI note that is
played by a percussive MIDI pad, in this case the Alesis Control Pad
played with drum sticks. Here's the thing (cheap at some $250 brand
new):
http://www.alesis.com/product.php?id=103
It's as plain and simple as that. Can anyone
verify it ? Start up Qsynth, load the Chromium sound font, pick a piano
sound, connect a MIDI percussive instrument, and try to play 10
consecutive, clear notes. No way. Try then with a percussive
soundfont. A drum set.
Now, do the same with Hydrogen and the same MIDI pad. Works nicely.
Velocity works also nicely. Now make it take into account MIDI note offs
(it's in the Preferences, the default being to ignore them). You'll
see that although most notes play OK, some are clipped.
Try also with WhySynth. Some patches work OK, some don't. When they
work, they even work with drum stick rebounds, as with Hydrogen.
From Kmidimon, the Alesis Control Pad MIDI notes, when hit with drum
sticks, last typically 1 unit of time (whatever unit that is) eg.:
Time Event Data1 Data2
89985 Note on 63 0
89984 Note on 63 55
Whereas the shortest note I can do on an Axiom 25 keyboard looks like:
Time Event Data1 Data2
41067 Note on 89 00
41051 Note on 89 94
That's a whole 16 units of whatever time. Same with the Axiom's
pads: they last a long time and thus, interact OK with Qsynth.
My theory about Qsynth (Fluidsynth...) is that the MIDI notes sent by
the MIDI percussion instrument are too short for it to pick them up.
Could that be ? It'd be nice to play all those available percussive
soundfonts using a MIDI percussion controller. Wprks all right with
Hydrogen, but not with Qsynth. Should Alesis make their Control Pad
send longer MIDI notes ? Or have a programmable parameter for each
note ? I don't know. Hydrogen works, but not Qsynth.
But then, can there be a default note length ? I would be glad to
set some default note length. I could even take the time to set notes
lengths according to soundfonts and load them with the instruments...
as long as there's a filter that could do that.
So, is there a MIDI filter out there that would enable something like
this ? To make (all or specific) MIDI notes last longer ?
Thanks for reading, and do not hesitate to throw suggestions.
Jam, no spam,
Al
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7:39 a.m.
Hallo,
porl sheean hat gesagt: // porl sheean wrote:
i don't know of any specifics, but in theory i can
think of two ways to do
it: one is to add a constant time offset to any 'note off' or 'note on with
0 velocity' event, and the other is to ignore those events and add them in
manually by taking the normal note on event and adding a note off (or 0)
event with a constant offset. don't know what things you can do it in
though, maybe puredata?
Yes, Pd can do it and it's a common idiom to filter out note-offs if
you're not interested in them with the [stripnote] object. A
minimal note off filter patch would look like this:
[notein]
| |
[stripnote]
| |
[noteout]
Make that with Pd, aconnect it as you like and that's it.
On 17/01/2008, lanas <lanas(a)securenet.net>
wrote:
> From Kmidimon, the Alesis Control Pad MIDI notes, when hit with drum
> sticks, last typically 1 unit of time (whatever unit that is) eg.:
>
> Time Event Data1 Data2
> 89985 Note on 63 0
> 89984 Note on 63 55
>
> Whereas the shortest note I can do on an Axiom 25 keyboard looks like:
>
> Time Event Data1 Data2
> 41067 Note on 89 00
> 41051 Note on 89 94
>
> That's a whole 16 units of whatever time. Same with the Axiom's
> pads: they last a long time and thus, interact OK with Qsynth.
>
> My theory about Qsynth (Fluidsynth...) is that the MIDI notes sent by
> the MIDI percussion instrument are too short for it to pick them up.
Or maybe they get played, but turned off immediatly? At least that
would be the correct behaviour if you play a very short note. If you
don't want notes to turn off immediatly, then use a note off filter as
above.
Ciao
--
Frank Barknecht _ ______footils.org__
8:41 p.m.
Le Jeudi, 17 Janvier 2008 11:43:00 +0100,
Frank Barknecht <fbar(a)footils.org> a écrit :
Yes, Pd can do it and it's a common idiom to
filter out note-offs if
you're not interested in them with the [stripnote] object. A
minimal note off filter patch would look like this:
[notein]
| |
[stripnote]
| |
[noteout]
Make that with Pd, aconnect it as you like and that's it.
Or maybe they get played, but turned off immediatly?
At least that
would be the correct behaviour if you play a very short note. If you
don't want notes to turn off immediatly, then use a note off filter as
above.
Shortly after writing the msg I saw an article to the effect that pd
can do that. Problem is, I use Fedora Core 6 x86_64 and pd is not
available through CCRMA for it. I could compile it but then, I might
have more fun doing a Perl or C(++) utility for this purpose instead of
trying to make a huge package work on a platform that seemingly is not
supported.
I thought of incorporating delays in between notes on and off. The
filter gets the MIDI note from the MIDI percussion pad, sends it to the
synth, then waits some time and sends a note off. Now, I have
presently no idea what time units MIDI is using. Doesn't look like
microseconds, maybe milliseconds ? I'll check it out.
I also thought that it could be fun to have some kind of a pedal that
would control that delay. A percussion player could then make the
sounds short or long or anything in between with that MIDI control pedal
that would be an input to the filter. That sounds good, so to speak,
but then, one has to make it jack compatible which is another thing
altogether.
Tschüß,
Al
18 Jan
18 Jan
2:16 p.m.
Hallo,
lanas hat gesagt: // lanas wrote:
Le Jeudi, 17 Janvier 2008 11:43:00 +0100,
Frank Barknecht <fbar(a)footils.org> a écrit :
You don't need the full package of Pd with all externals, just a plain
Pd from Miller Puckette's site [1] is enough (it even has important
bugfixes for 64bit).
You could get the source from [1] and type configure && make.
[1] http://crca.ucsd.edu/~msp/software.html
Ciao
--
Frank Barknecht _ ______footils.org__
Yes, Pd can do it and it's a common idiom to
filter out note-offs if
you're not interested in them with the [stripnote] object. A
minimal note off filter patch would look like this:
[notein]
| |
[stripnote]
| |
[noteout]
Make that with Pd, aconnect it as you like and that's it.
Or maybe they get played, but turned off
immediatly? At least that
would be the correct behaviour if you play a very short note. If you
don't want notes to turn off immediatly, then use a note off filter as
above.
Shortly after writing the msg I saw an article to the effect that pd
can do that. Problem is, I use Fedora Core 6 x86_64 and pd is not
available through CCRMA for it. I could compile it but then, I might
have more fun doing a Perl or C(++) utility for this purpose instead of
trying to make a huge package work on a platform that seemingly is not
supported. 
4:52 p.m.
On Jan 17, 2008 5:43 AM, Frank Barknecht <fbar(a)footils.org> wrote:
[notein]
| |
[stripnote]
| |
[noteout]
This will, leave hanging notes, AFAIK.
Try:
[notein]
| |
[stripnote]
| |
[makenote 0 100] // adjust the third argument to desired length
| |
[noteout]
--
./MiS
514-344-0726
http://www.creazone.ca
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5 comments
4 participants
participants (4)
-
Frank Barknecht -
lanas -
Michal Seta -
porl sheean