12 Replies Latest reply: Nov 18, 2012 12:55 AM by CCTM
Johan Carlisle Level 1 Level 1 (50 points)

How can I record each string from a synth guitar on a separate track in Logic Pro 9?

 

I am using a Brian Moore i88 midi guitar into a Roland GR-55 guitar synth. I have configured the GR-55 according to the manual to output each string as a separate midi channel in mono. I have set up Logic with 6 midi tracks. Each one is configured as a separate midi channel, 1-6. It doesn't work. When I select each individual track, the midi signal is present but when I record it only records in poly on one track.

 

I've never used the environment but perhaps that's the only way to do it.

I just found a section in the manual; "To create a new external MIDI instrument from the Arrange window."

I will try that.

 

I would love to hear from anyone who has experience doing this. Also, anyone who has a working knowledge of how to use the GR-55 with Logic would be good to hear from.

 

Thanks for any help on this.

 

Johan


MacBook Pro, Mac OS X (10.6.8), 4G•RME Fireface 800•Logic Pro 9.1.8
  • 1. Re: How can I record each string from a synth guitar on a separate track in Logic Pro?
    Data Stream Studio Level 4 Level 4 (3,150 points)

    Record it all on 1 track and then use the separate by MIDI channel command under the midi menu.

  • 2. Re: How can I record each string from a synth guitar on a separate track in Logic Pro?
    Johan Carlisle Level 1 Level 1 (50 points)

    Thanks, Data Stream Studio.

    I tried that but now can't get the tracks to output. There seems to be something happening; green lights are flashing, but no sound.

     

    I tried copying and pasting into a regular midi channel but that won't work either.

     

    Also, which selection do I use: 1) separate by event channel, or 2) by note pitch?

     

    My goal is to play a guitar and have each string recorded on a separate channel so I can process it inividually, etc.

     

    Thanks for your help.

     

    Johan

  • 3. Re: How can I record each string from a synth guitar on a separate track in Logic Pro?
    Data Stream Studio Level 4 Level 4 (3,150 points)

    What sound source do you have the MIDI tracks assigned to? Are you using sounds from the gr55? If so, you must route the midi back into it for play back. You separate by channel.

  • 4. Re: How can I record each string from a synth guitar on a separate track in Logic Pro?
    Pancenter Level 5 Level 5 (7,640 points)

    Johan Carlisle wrote:

     

    My goal is to play a guitar and have each string recorded on a separate channel so I can process it inividually, etc.

     

     

    What are you going to process? It's MIDI not audio, there has to be a sound generator, whether it's a Logic instrument or the GR-55. MIDI is not audio/sound, but you know that, right?

     

    You can record six separate channels/tracks at once but it takes a little setup.

     

    Create six MIDI tracks, set each tracks channel, go to Settings/Recording  and select "Demix by Channel if Multitrack Recording" (or something like that).

     

    Arm all six tracks and record, you should end up with each string on a corresponding track.

     

    You can now edit the MIDI tracks but they will need to be sent either to the GR55 or a Logic synth.

    Remember, sound will come out of the GR55 audio outs if you use it as a sound generator.

  • 5. Re: How can I record each string from a synth guitar on a separate track in Logic Pro?
    Johan Carlisle Level 1 Level 1 (50 points)

    Thanks for all the help with this.

     

    I will try your suggestions in the morning, as it's quite late. I will let you know if I can make it work.

     

    I am trying to generate midi guitar tracks, each string's output on a separate track. I will then assign a midi instrument to each track, probably an acoustic guitar. Then I want to experiment with different things. Ultimately, I plan to create an actual acoustic guitar that outputs analog signals for each string and record audio, rather than midi. Then I will process each string's track in experimental ways. This is the first step in my experiment, I guess.

     

    Thanks again.

  • 6. Re: How can I record each string from a synth guitar on a separate track in Logic Pro?
    Pancenter Level 5 Level 5 (7,640 points)

    Try the method DSS posted, it's actually the easier way to do it, Logic can record a multichannel MIDI tracks and split all note by channel. Much easier to deal with than arming 6 tracks... I only posted the above to offer an alternate, Logic often provides more than one method to achieve the desired result.

  • 7. Re: How can I record each string from a synth guitar on a separate track in Logic Pro?
    CCTM Level 6 Level 6 (9,025 points)

    Hi

     

    In principle, this method would work, except that when using a guitar-MIDI converter in MONO mode, it transmits the MIDI data on separate channels for each string, including separate channel pitch bend messages. This will cause 'chaos' when recording to one Instrument track, since all the individual Pitch Bend info gets routed to one Instrument channel. It would work OK after recording, when you split by MIDI channel, but it would be awful to actually record that way.

     

    There are 2 possible solutions: run the Guitar to MIDI converter in Poly Mode with Pitch bend turned off, and record on one Software Instrument track, or record using the (long) multi track for each MIDI channel.

     

     

    CCT

  • 8. Re: How can I record each string from a synth guitar on a separate track in Logic Pro?
    Pancenter Level 5 Level 5 (7,640 points)

    CCTM wrote:

     

    Hi

     

    In principle, this method would work, except that when using a guitar-MIDI converter in MONO mode, it transmits the MIDI data on separate channels for each string, including separate channel pitch bend messages. This will cause 'chaos' when recording to one Instrument track, since all the individual Pitch Bend info gets routed to one Instrument channel.

     

     

    CCT

     

    Good thought, that's a ~lot~ of MIDI data to contend with, probably too much to insure accurate timing.

     

    Years and years ago I had a PitchRider with a modified ROM by the original designer, worked well, at least on the top 3 or 4 strings... it had the individual channel capability but I never set it up that way, I remember it being h#ll to edit just on a single channel, it was much easier to become a better keyboard player.

  • 9. Re: How can I record each string from a synth guitar on a separate track in Logic Pro?
    Data Stream Studio Level 4 Level 4 (3,150 points)

    Just set the track to no output while tracking.

  • 10. Re: How can I record each string from a synth guitar on a separate track in Logic Pro?
    Johan Carlisle Level 1 Level 1 (50 points)

    Thanks again, everyone, for your suggestions.  I will experiment, over the next few days when I get some time, with all your ideas and then post here again with an update on how I do and any other questions that come up. It all sounds a bit confusing without actually trying it all out.  Ultimately, this may be an exercise in futility for me, since my goal is to record analog audio once my experimental guitar is finished. (It will be an acoustic guitar which outputs individual analog signals from each string to six 1/4" jacks.)

     

    For now, this will be good for me to finally learn more about how the GR-55 works with Logic; how MIDI works, in more detail; how to create instruments in the  environment, since my first attempt at trying DSS's suggestion created separate general midi instruments but I am still unable to get sound out of them, etc.

     

    I really appreciate all your ideas and I will be back here as soon as I can.

     

    Peace,

    Johan

  • 11. Re: How can I record each string from a synth guitar on a separate track in Logic Pro?
    Pancenter Level 5 Level 5 (7,640 points)

    Johan,

     

    Where do you expect the sound to come from?

     

    You have two sources available to you, at least that I can see.

     

    The Mac's audio out (or if you have an audio interface, it's audio out)

     

    Or...... the GR 55

     

    And External MIDI track should send to the GR55, if you have a MIDI out going to the GR55's MIDI IN. In this case, the audio will come out of the GR55, is it plugged into an amp?

     

    If you're using an audio instrument track, and have an instrument selected the sound will come out of the Mac, have you set up Logic's audio preferences?

  • 12. Re: How can I record each string from a synth guitar on a separate track in Logic Pro?
    CCTM Level 6 Level 6 (9,025 points)

    Pancenter wrote:

    Good thought, that's a ~lot~ of MIDI data to contend with, probably too much to insure accurate timing.

     

    Hi

     

    It's actually much more of a problem regarding "polyphonic" pitch bend.... 1 string is bent whilst others are not (for hammer ons, bends etc.). Normally this info is sent on separate MIDI channels, but if you record it on just 1 Instrument track in Logic, the pitch bend messages will apply to all input data, not per string/channel.

     

     

    (All this assuming that the OP is using Logic instrument plugs as the sound source, and not any built-in sounds within the guitart to MIDI converter).

     

     

    CCT