I'm having sever latency issues on Logic 9 through the built-in input (despite having no plugins active and 32 bit buffer size selected)

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I'm having sever latency issues on Logic 9 through the built-in input (despite having no plugins active and 32 bit buffer size selected)

I'm literally running a guitar straight into my computer (no plugins, no interface, just the "built-in input" on my macbook) and there's a LOT of latency. I'm very experienced with Logic and pro-audio (I have logic on my other computer and it works fine) but for some reason there's a ton of delay on my signal. NO idea where to start with this one. I've examined every option within Logic and nothing seems to be helping. I've changed every parameter, including buffer size, disabling and reenabling core audio, and low-latency mode, but nothing has worked.

Any advice would be appreciated, thanks.

Also, I'm using a late 2011 15" Macbook (Quad core, 4 GB ram)

Logic Pro, Mac OS X (10.7.5)

Posted on Jan 29, 2013 8:40 PM

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Answer 1

Pancenter

Level 6

14,644 points

Jan 29, 2013 8:51 PM in response to nickloiacono

If you're a very experienced Logic User you know that "Low Latency Mode" will have zero effect if you have no latency inducing plugins running...... right ?

Use a 128 buffer setting.

Audio Prefs set to Built-In Line IN and Built-IN Line OUT (or speakers)

After this is all set, quit Logic.

Reboot the Mac

Still the same?

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Answer 2

nickloiacono Author

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Jan 29, 2013 10:26 PM in response to Pancenter

Yes I am fully aware, I just threw that out there so anyone reading wouldn't ask if I'd examined that option. I've restarted Logic, restarted my computer, tried several different buffer sizes, tried different in/out options, tried all parameter options within those tabs, set them back to standard defaults, etc. Nothing changes. I also just tried garageband... same issue. I have a bad feeling it has nothing to do with my software at this point. Maybe my computer's audio driver or something along the lines of. Not really sure what I should do about it.

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Answer 3

Pancenter

Level 6

14,644 points

Jan 29, 2013 11:00 PM in response to nickloiacono

Never heard of this before... what are you using for output in Logic's Audio Prefs?

Are you on 10.7.5 as you signature says? There is a supplemental update for early builds of 10.7.5 that were released.

Take a look at the Audio portion the "Audio-MIDI Setup" in Utilities.

Bit-depth, sample frequency? Try it at 16-bit 44.1kHz. Is Logic set to the same?

What kind of cable are you using to get the guitar into Logic, the Mac audio input jack is multifunction, could you be partially enabling the digital I/O.

just tossing some ideas..

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Answer 4

nickloiacono Author

Level 1

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Jan 30, 2013 2:26 AM in response to Pancenter

"Built-in output"

Yes, I'm on 10.7.5. Tomorrow I'm going to take a look at the bit depth/sample rate tomorrow, perhaps something is out of synch.

I'm going in via 1/4" cable with a 1/8" adapter. However, I ran in with a USB interface and there was still latency. I'm thinking that the hardware/input is okay.

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