OS_CE › Forums › Octopus › User exchange › Logic users please help…
- This topic has 13 replies, 3 voices, and was last updated 13 years, 10 months ago by greg kernaghan.
December 4, 2008 at 22:52 #897
I’ve been making some progress with my Octopus,
but am now running up against some Logic problems.
I know there are a few Logic users here so maybe they can assist!
What I have done:
1) Setup Octopus with both MIDI ports to my AMT-8.
2) assigned a channel splitter to each Port in Logic
for the 2 Octopus ports.
3) Created an "Octopus" Logic instrument in the
environment and set its MIDI channel to "All".
4) connected a cable from this to the splitter.
5) On CH1 of the splitter sent this to my
Drum box (drumstation which is MIDI CH10)
6) on CH2 of the splitter, sent this to my
Doepfer Modular (MIDI CH1).
Start Octopus and the drums and bass play
as expected. I can add more destinations to the
splitter OK – eg to another mono synth.
But back in Logic, if I select another Instrument
in the Arrange screen eg another synth, the
Channel assignments made in the Octopus now
go to the instrument selected in the arrange screen
and start playing. I have to select the Octopus’
track only and so cannot play my other synths
What I want to do is use Octopus to play the
instruments that are assigned to it but then
be able to select an Instrument in Logic and play
that over the top, eg octopus handles the bass/drums
and I can play chords in Logic without the selected
instrument being triggered by the Octopus.
I know this can be done, but I do not know how.
Can someone please advise?!
rachelDecember 5, 2008 at 12:50 #2147
I cracked the best part of it…
I will write up the process here to assist others as vague descriptions are not useful!
I spent about half a day on this and most of tonight.
Now I have it so that I can use the Octopus to trigger
selected Instruments through Logic but still use
my keyboard controller to play selected tracks in
Logic without Octopus treading on my turf!
The part I have not got yet, I will write up separately, which is recording the MIDI output of each instrument into Logic, from the Octopus. This is purely for monitoring purposes at this stage,
using Logic as a big MIDI router.
In all this time, Logic is stopped – ie I am not
sending a Clock to Logic and it is not syncing the
Anyway, for MIDI monitoring and jamming with the Octopus in Logic here is the walkthrough:
Go to the Environment and Create a new Page named
In this new environment, Create a Multi Instrument
for each Octopus MIDI Port. Label the Multi Instruments "Octopus 1" & "Octopus 2".
Leave all the channel boxes unchecked (ie no icon)
and click on the Global part of the Multi Instrument.
In the Inspector column on the left, Set the MIDI Port
to the ones your Octopus is attached to, in my case
this is Port 8 and Port 16 in my 2 AMT’s.
In the Inspector, set the MIDI channel to "All".
Create a Channel Splitter object for each Multi Instrument Octopus 1 & 2.
Cable the Multi Instrument to each one. I use
a Monitor in between for debug purposes.
Each MIDI channel on the Splitter can go to any
destination you can get off the picklist (Option|Click the cable). So the Instrument must have at least an Environment Object representing it as a destination, eg an Instrument or Multi Instrument or VI.
The MIDI channel of the target instrument is irrelevant.
Make sure your Octopus is setup to transmit
data on the track/port/channel of your choice.
In my demo I am a newbie so I only have 2 instruments setup in Octopus right now but it is the same
for 32. I have a Drumstation set to Channel 10
as it’s MIDI channel in the instrument, Logic and
AudioMidiSetup. I have a Doepfer A100 set to Channel
1, likewise. Both are on their own AMT port.
But the Octopus has Channel 1 set for the Drum parts (DS) and Channel 2 set for the Bassline (A100).
Select Ch1 in the Channel Splitter and cable it
to the chosen instrument. In my case "Drumstation".
Select Ch2 in the Channel Splitter and cable it
to the chosen instrument. This time it’s "A100".
Now all your MIDI port assignments are complete.
The next step is to give Octopus its own realm
to play in.
Go to Environment|Clicks And Ports
Ensure you have a Physical Input somehow connected
to a Sequencer Output. Mine has a keyboard and
a couple of transformers in the middle, from the SUM
out to the Seq Out.
On the Physical Input, Locate the MIDI Ports your
Octopus is using. Mine uses Port 8 and Port 16
for Octopus Ports 1 & 2.
Create a Monitor Object for each Port. Label them
"Octopus 1" & "Octopus 2".
Select the Physical Input that represents your
Octopus Port 1 – in my case it’s Port 8.
Connect it to the Monitor.
Connect the output of the Monitor to cable up
to the Octopus 1 Multi Instrument you just created.
Repeat for Octopus Port 2, using the appropriate Physical Input in Logic.
Note: If you have Octopus Port 2 configured and cabled to your MIDI interface, you must cable it from the Physical Input Port you have connected, to the Octopus 2 Multi Instrument even if you do not use it, because otherwise you will get summed data sent to the SUM port of the Physical Input.
You do not need anything connected to the Channel Splitter outputs if you don’t need to yet.
Start Octopus – you should see MIDI Data coming through the Monitor(s) depending on how you have the Ports setup. You should also hear the appropriate
music being played by the appropriate instrument.
Go to the Arrange Page in Logic. Run the Octopus.
It should not trigger any instrument except the ones connected via the Environment.
Select different instruments in the Arrange tracks.
You should be able to jam along with the Octopus
as your backing or whatever without Octopus
triggering your currently selected Logic track.
Note that this setup could well work for other
gear as well, such as MPC’s and the rest.
At this point, I have only got a monitoring
setup going. It is what I need to work with the
Octopus and jam with it via my controller keyboard
together. It may well work in a "live" setting,
but remember, Octopus is not syncing and Logic
I will try to get MIDI recording
of the tracks going from this configuration
and then try and see what sync Options I can
have. It may involves tweaks to the Environment.
If anyone wants to post this as an FAQ or something
for other Logic users, go ahead. I can also offer
up the Environment I put together, but it is
for Logic 6.4.3.
rachelDecember 5, 2008 at 12:50 #2148
Post edited by: rachel, at: 2008/12/05 13:52December 5, 2008 at 19:43 #2150
I think you’ve pretty much nailed it. The trick is indeed to seperate your incoming data (eg. Octopus) right at the level of "Physical Input". Only data you want to record goes to the "to the Recording & Thru" object (and that’s the current selected track).
Recording your Octopus data is a little bit trickier because you use 2 different ports instead of 1, but it’s possible. If you need any help, let me know. Screenshots are handy in these situations.December 8, 2008 at 02:44 #2154
Mmmm, OK, after my success I have fallen into
What I wanted to do next was configure everything so I can input notes and chords into Octopus via a keyboard,
which I read in the Navigation Guide.
So I set a MIDI channel to a track, press SEL
for the track and hit the record button.
But depending on how I select the keyboard in Logic,
I get either no input at all or an incredible screaming
MIDI feedback loop that stops when I deselect the
track on the Octopus.
So it seems the Octopus is receiving my streams from
the keyboard, echoing them to the Out port and back
I tried a couple of different approaches but none
seem to work that well. I am hoping I don’t need
to directly attach a keyboard to the Octopus but
go via my Interface etc…
rachelDecember 8, 2008 at 08:58 #2155
I have not studied the details of your setup, but I will just pass my general advice in such situations:
Paper and pencil!
Draw a flow diagram of your setup, and there is a fair chance, that you solve your problem quickly. When the problem is solved, make an even nicer version of the diagram which you keep. This is your personal "setup manual", that you should always remember to update when you make changes.
So when in a year when you get a new computer and everything is re-done, it will be a walk in the park to setup your gear.
-LarsDecember 8, 2008 at 11:29 #2156
Hmmm yes, I have already done pretty much this.
And my observation is that the Octopus is echoing
the MIDI input to it, back to itself.
Is there a MIDI echo off function in there or does
it only work for sync?
I might try and mess with the sync modes and
see if that helps. My basic map of the MIDI IO
is very simple! Thanks for your help….
rachelDecember 8, 2008 at 14:44 #2157
Sorry to keep replying to my own posts, but I
am trying to nut this out best I can.
I think I can rule out the MIDI loop coming from Logic.
If I assign and arm a track for recording, as soon
as I hit Play on the Octopus, I get an instant
MIDI loop and all the output data is coming right
I know the MIDI echo feature in the Octopus is a recent thing. So perhaps most people haven’t come across the problem yet.
I was wondering if it were possible to add a switch to enable/disable echoing the MIDI output back to the Input via the firmware? I know this would fix my
problem pretty much. A bit like a "local control"
setting or whatever.
Maybe I am totally off the beam. But I have tried
different combinations of connections and come to the
same result. In any case, I guess I need more
advise. Output of the Octopus itself is fine.
It is only when enabling MIDI input record mode it
goes into a loop and I have had to reset it from
locking up a couple of times tonight already.
Any advise would be welcome!
Made some progress. I pulled the MIDI In of the
Octopus out of the AMT interface and plugged it straight into my controller keyboard MIDI out.
Then I setup and armed a track – it was able to
be triggered by my keyboard no problems.
This tells me that Logic is somehow echoing
everything back to the Octopus, which is
accepting the data and feeding back into a MIDI loop.
But now I can see no way forward with Logic to
What I think will fix it is me spending more money
on a MIDI Thru box for my controller keyboard,
which only has MIDI In/Out, but no Thru.
So the idea would be to split the Output of my controller to go to Logic via the MIDI interface
for "legacy" purposes and send MIDI messages from
it via a direct split of the MIDI out, when I need
to arm Record and play into a track directly.
But this is a messy solution. Does anyone else
think that being able to enable/disable the MIDI
echo Out of the Octopus would work here? My feeling
is that it would. But I am new to this. I don’t
really feel like spending another $60 on a Thru box,
when the software hackers could possibly do a switch
in the firmware, but I am probably asking too much,
too early :whistle:
Post edited by: rachel, at: 2008/12/08 17:56December 16, 2008 at 20:06 #2158
If you get a midi loop there’s still something wrong with your "environment" configuration in Logic. Never route the output from Octopus to the Logic-track that represents Octopus again. There’s your midi loop.
Instead use 2 different scenario’s, one for recording and one for monitoring. You can use a "switch" (Logic object) for switching between:
a. Recording. The track object is connected to all kind of synths BUT NOT Octopus. Route your Octopus (Logic) input to the "Recording & Thru" object.
b. Monitoring. Route your Octopus (Logic) input directly from "Physical Inputs" to your synth objects.
The switch can be used when strategic placed between "Physical Input" and "Recording & Thru".
Used this scenario many times when I was working with more computers (soft sequencer stuff) or other midi generating gear.July 11, 2009 at 00:32 #2159
I’m a SE Qld based Octopus newby struggling with the Logic multi-timbral implementation of my octopus.
I have read and attempted to follow your posts on this with the channel splitter environment solution, but am still stuck.
Is there any way I could perhaps call you to solve this one over the phone (happy to Paypal some dosh for your time) please?
Thanks very much Rachel
firstname.lastname@example.orgJuly 11, 2009 at 11:29 #2445rachel polanskisParticipant
give me a day or so and I will pass you my Login environment, which you can then import
into Logic and use to connect to the Octopus – I am working funny hours this week and so am
not always available!
rachelJuly 11, 2009 at 12:10 #2446
thanks rachel… that would be awesome!
gkJuly 14, 2009 at 13:23 #2447rachel polanskisParticipant
I will ring you tomorrow (wednesday) and give you my email address!
Then I will try to have this setup for you as soon as I can. I have not been near my studio and
nothing is powered up the last few night :dry:
If you are using Logic Express, my setup will not work – I am using 6.4.3 so it should transfer
to Logic 8 Ok…. What kind of MIDI interface are you using?
rachelJuly 19, 2009 at 01:29 #2448
Auto demix by channel if multitrack recording
My Logic simultaneous recording channel mapping issues have been simply solved
by the following apple support post (reproduced below)
I assume your instruments have already been defined.
Recording on Multiple MIDI Tracks
You may occasionally want to record multiple MIDI tracks at the same time. Often, this will be data recorded from an external sequencer, or played from a keyboard that is split across multiple MIDI channels.
You can also simply play the same MIDI channel information from your keyboard, but record it to multiple tracks. One reason why you would do this is to create layered instrument parts.
To record regions on several MIDI tracks:
• Switch on the Record Enable buttons of the tracks you wish to record to.
Note: Selecting an external MIDI or instrument track which is not record-enabled will turn off the record-enabled status of all other external MIDI or instrument tracks.
Record-enabled audio tracks are not affected.
There are two operating modes available for simultaneous recording of multiple MIDI tracks: Layer or Multiplayer recording.
• When Layer Recording: Incoming MIDI events are sent to all record-enabled MIDI tracks. You can listen to all selected instruments before, and during, recording.
• A MIDI region is created on the selected track after recording.
• Aliases of the MIDI region on the selected track are recorded on the other tracks.
The advantage of this approach is that any subsequent edits to the “parent” MIDI region will affect all aliases, ensuring that all layered tracks remain identical.
• When Multiplayer Recording: Incoming MIDI events are distributed to the various record-enabled tracks, in accordance with transmitted MIDI channel numbers.
• The channel of the incoming event must correspond to the channel of a record-enabled track, in order for this functionality to work.
• If no track with a corresponding channel number is found, the event will be routed, and recorded, onto the selected track.
You should ensure that each of your MIDI controllers transmit on different channels. If this is not possible, simply use different inputs on your MIDI interface, and change the MIDI channel of each input, using a transformer object between the Physical Input and Sequencer Input.
To switch from the Layer recording mode (default) to Multiplayer recording mode:
• Switch on the File > Project Settings > Recording > “Auto demix by channel if multitrack recording” option.
(thanks Brazeca – gk)
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