Jump to content

bus or aux as input for audio track


simpleton

Recommended Posts

i didn't think it was possible in Logic but an Apple friend of mine taught me a trick that allows you to record a bus or an aux to an audio track.

 

1. in the Environment create a new Audio Object and set it's Channel to "Input 1-2" (or any of your inputs)

 

2. insert a Nosie Gate plug-in (Logic/Dynamic/Noise Gate) on the Audio Object. set it's sidechain to Bus 1 (or whatever signal you want to record) and click the "Monitor" button in the sidechain section.

 

3. rec-enable an audio track and set it's input to "Input 1-2" (or whatever you assigned to the Audio Object Channel)

 

with this technique any possible sidechain can be the audio track's input signal :)

1.object.gate2.jpg.811e36f1261901beb1228c0e7ea7d74c.jpg

Link to comment
Share on other sites

i did some experiments with this cool trick and found that the recorded audio will be early dependent on the I/O Buffer setting. you can see the different buffer settings (track names) in the picture. i was able to compensate for a buffer setting of 512 by adding a Sample Delay plug-in (Logic/Delay/Sample Delay) to the Audio Object (inserted after the Noise Gate) with a setting of 1063

recbuffer.jpg.58ce7a88cf564221242e5ae8bb2f2e81.jpg

Link to comment
Share on other sites

there was no difference with PDC on or off

i guess it's not surprising but the buffer setting isn't compensated for in this freaky wiring

i did the test with three basic configs at both 124bpm and 75bpm (plus two tests at 140)

 

1. ES1 as source

2. Sculpture as source

3. Sculpture as source with Space Designer and other Insts (not in recorded signal) playing six-note chords on Atmosphere, CS-80V and Arp2600 all with a Space Designer

 

each of these gave me the same results

only changing the I/O Buffer changed the offset

 

i guess you could find the sample delay for your I/O Buffer settings and even add all those Sample Delay plug-ins (bypassed) to an Audio Object with Noise Gate that you could save in your Autoload

pretty easy, really

:)

Link to comment
Share on other sites

  • 2 weeks later...
  • 2 months later...

Well I am missing something or there is some setting that you

did not mention. I had the audio coming into the audio track

with a bit of trouble but finally got it but it disappeared as soon

as I hit the record button. Do you have any idea why that would

happen.

Just for the record.

 

midi file playing on inst track

Sending to bus 2 PRE

Audio object on track 8 with gate monitoring bus 2

input output set to 1-2

Bus 2 has visible levels

 

 

One thing that kind of confused me is why are we creating an audio

object when we have the objects for the audio tracks there already?

 

Well let me know If I missed something obvious....

Link to comment
Share on other sites

Because you want to place the Noise Gate before the sequencer, hence on an input object, not a track object (which only gives you playback monitoring, but won't allow you to record).

 

My guess is you didn't follow the tutorial but instead tried to insert the noise gate directly on a track object. That won't work: you need an input object.

Link to comment
Share on other sites

hey greatt tip, but just a couple questions......

 

so,

-in the environment window i created an audio object.

I went to change the channel to "input 1-2", however the option of changing it to an input does not exist.... the options for that are: "track, aux, instrument, rewire, bus", however there is no "input" option...

 

what do i do??? <:(

 

-thanks,

anton

1233587928_Picture1.png.dfb99d4834b3faad7110c83adceb0a4f.png

Link to comment
Share on other sites

1. in the Environment create a new Audio Object and set it's Channel to "Input 1-2" (or any of your inputs)

 

2. insert a Nosie Gate plug-in (Logic/Dynamic/Noise Gate) on the Audio Object. set it's sidechain to Bus 1 (or whatever signal you want to record) and click the "Monitor" button in the sidechain section.

 

 

 

OK maybe it is just me and I am not complaining But David where did he say input object? All I see is Audio object.

 

They are two different things are they not?

 

I know I am have been getting a little short tempered with Logic but I am trying to work with it. I even got a new

Raptor 150 GB drive and NOTHING is going on it except Logic and some support apps. If Logic still gives me as much problem as it has lately you may hear about some guy that went base jumping off a casino without a parachute.

Link to comment
Share on other sites

  • 4 months later...
  • 4 weeks later...

Am I missing something here?

 

I don't see the point in this. You can bounce the output of any bus by sololing it and bouncing in the usual way. Make sure add to audio window is selected. Then simply drag the new audio into your arrange page from the audio window.

 

Surely this is quicker than the process of messing round setting up gates plugins and the side chain, and you don't have to worry about delay compensating yourself. The bounce can be done offline this way, saving more time.

Link to comment
Share on other sites

If you use the Bounce function there are a lot of things that you cannot do while Logic is bouncing.

 

Once setup, this environment makes it actually faster to "bounce in place" than the method you suggest: you just hit record on a new audio track and can record any single region with its effect. No need to drag the audio back into the Arrange window!

Link to comment
Share on other sites

  • 3 weeks later...

If you have, say 12 rewire audio channels coming into Logic and you want to bounce them all at once to separate audio tracks: use Jack.

 

Download the jack audio connection program for OS X (it's free), then set up a jack server with (say) 16 virtual channels, pointing to your usual audio card.

 

Then, start logic and choose the jack server as your audio card instead of your normal one. Logic will appear in Jack (it might take a minute or so) with 16 inputs and 16 outputs. I left ins/outs 1-4 alone (they correspond to the ins/outs on my m-audio soundcard).

I mapped the other virtual outs to the virtual ins.

 

In logic, create an additional set of (mono?) outputs. Then, each rewire audio track gets routed to a virtual output (workaround: logic only shows stereo outputs , e.g. 5-6, so you need to output to a stereo out and use panning if you want mono outs).

 

Then create some standard audio tracks and set their inputs to the virtual inputs (5 - 16). Arm these tracks, hit record, and there you go: all your rewire tracks recorded simultanteously to Logic audio tracks.

 

E.g. for the rewire audio channel 3 I have the following path:

 

rewire channel 3 (panned left) --> output 5 --> audio track with input 5

 

If anyone is interested I can hack together an environment and Jack studio setup and upload these. Let me know if that'd be any use.

 

-Martin

Link to comment
Share on other sites

  • 2 weeks later...
  • 3 weeks later...

so would it be possible to explain how to do this process with an Audio Instrument?

I can see the benefit of being able to "print" effects .... if you are sure of what effects , etc you want, you can print the audio to a track, thus freeing up your CPU ..... excellent post BTW!!

Link to comment
Share on other sites

  • 3 weeks later...
  • 3 weeks later...
  • 5 months later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...