Bounced file has no audio

Question

Bounced file has no audio

Hey everyone,

Ok, so maybe someone can shed some light on this or has a fix.

I bounce a session in Logic Pro X (10.2.4) on macOS Sierra and it creates a file. It even creates a file that is about the size a file would be if there were audio written to it. But when you go to playback the bounced .WAV, dead silence throughout. I mean nothing.

To confirm that I wasn't losing my mind, I dumped the file into Ozone 7 Advanced and, sure enough, no waveform. Nothing but a flat line.

My HOST audio interface is a Universal Audio Apollo 16 mkII (black face), with an Apollo Twin daisy-chained via Thunderbolt.

I know there's nothing wrong with my output paths because Pro Tools 12.7 bounces just fine. This seems specific to Logic for me. This is actually starting to drive me nuts. Currently I'm not in a crunch to have anything done, but this is gonna be an issue soon if Logic is creating empty interleaved audio files on bounce.

I have conducted both offline and realtime bounces to the same end - no audio. But what's bizarre is that an empty audio file (all 0's) should be 0 bytes (or nearly zero), but it's not. It's like 50MB (I'm trying to bounce a 44.1/24bit file).

Is this a bug?????? *** is going on? Nothing I'm trying works. I'm even reassigning my outputs in Logic to defaults and sending everything out the main outs instead of the Virtual Outs into UAD Console. All the settings in Logic seem fine.

Logic Pro X, macOS Sierra (10.12.2), Logic 10.2.4

Posted on Jan 6, 2017 6:14 PM

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Answer 1

Jan 6, 2017 9:59 PM in response to Indyuser

Correct. I route everything through dedicated virtual I/O through UAD's mixer. This way, when I'm running Pro Tools and Logic together (one slaved to the other via MTC) I have control over the output levels of both independently in the same UI (it's like using an analog board and returning tape to two stereo channels). The audio passes directly out of Logic via the virtual I/O into UAD and then out to the monitors. I have it set up where I do not use the Stereo Outs in Logic. I swear to god, this has been working for me forever...until now. LOL!

To be absolutely sure, I changed all my outputs on the Summed tracks in Logic to "Stereo Output" instead of my user-defined "LOGIC OUT L/R" going to the virtual I/O. I confirm, now, that I DO get audio in the bounced file. So maybe that is the answer.

I still have no idea why I was able to bounce out of Logic not 3 days ago (Jan. 3 is the last file I bounced from Logic) and it worked fine with my custom I/O setup. Now, it doesn't work. Makes no sense to me. In Pro Tools I can use any output/monitor path I want. If Logic requires all audio to pass through the dedicated Stereo Out, well, I hope they fix that in future updates/releases. Just bizarre.

Thank you for your help.

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Answer 2

Indyuser

Level 5

4,623 points

Jan 6, 2017 9:49 PM in response to ExtremeParrot

None of your channel outputs are routed to the stereo out? And Where are the auxes for the buses?

In logic preferences set your audio output to built in speakers... then press play - I bet you won't hear anything.

no sound = no sound bounce.

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Answer 3

Jan 6, 2017 9:22 PM in response to Data Stream Studio

Negative. Outputs haven't changed. This literally just started happening and I have no idea why. To be sure, I went into Preferences and changed my default outputs to main outputs on the Apollo. Tried bouncing in real time. I heard everything as it played through. The file that bounced had nothing.

So it isn't the outputs. I changed them back to the Apollo's virtual outputs to bring them back into the UAD Mixer since that isn't what was causing the problem.

Logic is creating a bounced file, it just contains no audio. I think the problem is with the software. I recently updated FROM OSX 10.10.5 to macOS 10.12.2. I'm using the latest version of Logic Pro X (10.2.4). I literally did nothing to Logic and it all of a sudden will not bounce usable files.

I've included screenshots.

#1 is the Bounce window showing that everything appears to be set correctly

#2 is the output path (Output 23-24/Logic Out) - which is going to the virtual INPUTS of UAD mixer

#3 is the UAD environment (Note: the audio levels coming back from Logic and being sent out to the speakers)

Any other ideas what is causing this????

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Answer 4

kerochan

Level 4

1,071 points

Jan 6, 2017 11:00 PM in response to ExtremeParrot

Hi Extreme

I did hear that UA doesnt work with Sierra properly a few weeks back, may be worth checking the UA site for latest drivers, it may be sorted now or soon anyways.

Have you recently updated to Sierra? Was all ok with your previous OS?

I have an Apollo Twin, all fine with El Capitan.

So my guess its the UA/Sierra compatibility.

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Answer 5

Jan 7, 2017 8:26 AM in response to kerochan

Yeah, they came out with an update though. From what I understood, UAD v9.0 was compliant with Sierra. I waited until absolutely every one of the developers I use said Sierra was good to go. I just had no interest in updating to El Capitan (frankly, I'm getting tired of a new OS every year).

I'll check with UA again though. Maybe it's a bug they don't know about.

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Answer 6

Jan 6, 2017 8:03 PM in response to ExtremeParrot

It sounds to me like you're bouncing outputs other than the ones you have your sounds assigned to output through. The file size is correct. All zeroes takes up as much file space as all ones.

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