Re: [seq24-users] start-stop midi messages from external source (very dirty workaround)

[<hwo...@pa...>]

On Tue, 2005-11-08 at 23:41 +0100, florian grassl wrote:
> hi,
>=20
> i'm not too versatile with jack since it runs very sloppy on my machien=
e (and i'm a newbie to it). pd kind of gets recognized by it though in th=
e patch bay of qjackctl.
Jack is very nice! You should use 'realtime lsm' kernel module to get
realtime priority, and enable' preemptive kernel' in the kernel config.
I also use zynaddsubfx soft synth and specimen sampler, together with my
korg ms-2000R hardware. I use ardour for multitrack recording.
Everything perfectly synced, with ardour as sync master (seq24 sends
midi sync though).
> i don't know whether there is a proper sync mode but pd can be compiled=
 with a --enable-jack (?) option.
>=20
> i've created a real dirty workaround for the moment.
> my setup is:
> korg ES-1 / midisport2x2 (A-in, A-out, B-in, B-out)/ pd-039-1 / seq24
> --created two loops in seq24 :=20
> 1. one that ticks very fast to give a sort of clock metronome to midisp=
ort B-out
> 2. one that has only one 1/64 beat at the start to send a single tick B=
-out
> the B-out is directly wired back into A-in of the hub and send back int=
o the computer and received by pd.
> in pd, i have a pathc that receives those as midinotes and uses the tic=
ks to start the ES-1 (by utilizing 2.) and give it it's speed (with 1.)
> pd is set to use midisport as a oss device since i am not able to route=
 the start-stop messages via alsa to the ES-1.
>=20
> surprisingly, the lagtime is very low and only sometimes when 2. reache=
s it's end and basically restarts ES-1 there is a millisecond doubling on=
 the first beat of the ES-1.
> It could well be that external devices use the same message to be start=
ed and stopped but you need to figure out the port on which the MC-50 rec=
eives its messages.
> If you want to try it with pd, i'll clean up the patch and post it to y=
ou.
MC-50 is a very standard sequencer, and it syncs perfectly with seq24
midi, but not the other way round, and that is what I want, because the
MC-50 has a nice turn/search wheel, which sends midi messages of his
track position. Seq24 still can only synchronize with jack-sequencer and
not with midi sequencer, so what I actually want to do is: 1. syncing
jack-sequencer with midi-sequencer (doesn't work), 2. seq24 with
jack-sequencer (works allready). I was wondering if PD could to the
first task (stand between midi sequencer and jack sequencer), or any
other tool.

Is pure data ok? What can/do you do with it? I allready tried it a year
ago, but seemed too complicated for me :)


Greatings Hendrik

>=20
> greetings, flo
>=20
>=20
> "hwo...@pa..." <hwo...@pa...> schrieb am 07.11.05 18:16:5=
8:
>=20
> On Wed, 2005-11-02 at 17:05 +0100, florian grassl wrote:
> > hello there,
> >=20
> > new to seq24 i of course have to draw my head for the creator of seq2=
4. it does exactly what i need - no bloated package running unstable and =
such - cries out for being used live (and hell yeah, that's what i gonna =
use it for). excellent!
> >=20
> > I was wondering whether there was a way of starting and stopping seq2=
4 from a external source. usually, if the port of the device is known, th=
ere is acertain message one can send to the device for a certain funcitio=
n.
> >=20
>=20
> I have tried the same to start seq24 with my Roland MC-50 sequencer, bu=
t
> I had no luck. You can sync seq24 to jack-sequencer (and it works very
> good!). But I also couldn't find a tool to sync midi with jack-sequence=
r
> (from jack-audio-connection-kit).
>=20
>=20
> =20
> > specifically, i'd like to start seq24 from pd (pure-data multimedia e=
nvironment). there is a midiout object that i.e. allows me to send a (num=
eric) start and stop message to external equipment.
> > So i'd like to do exactly the same within pd to trigger the start and=
 stop function of seq24.
> > Thanks in advance for any suggestions!
> >=20
> You can use seq24 as master midi sequencer. Does pure data have a
> jack-sync output? I would be very interested also!
>=20
>=20
> Greeting Henne
> > greetings, flo
> > _____________________________________________________________________=
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