I have a need to insert an audio watermark (basically an audio file repeating the name of the company) into thousands of audio files. I'm having a hard time finding software that can streamline this batch process. I basically need to merge a single audio file with thousands of others keeping in mind that the lengths of the audio files vary from 7 seconds to around 10 minutes.

Anyone have any ideas of software that can batch process this task? I'd rather Mac software but PC software can work as well.

Thanks,
J

The first thing that comes to mind is Bias Peak, which has a batch mode, but I don't think I've ever tried to operate on two audio files at the same time. Maybe if you did something like copy the watermark into the copy buffer, then batch through the files pasting it? I assume the watermark will go in the same position within each file?

Here's another possibility that's a little klunky, but I think it would work. Use something like Peak in batch mode to insert silence into each file where the watermark goes (hopefully at the beginning). Then use a utility like sox (unix command-line program that you could get for Mac OS X for sure, probably with a lot of hassle for windows as well) and use the mix option (maybe soxmix) to mix the watermark with the original.

I've never used it, but I just glanced at Audacity and I see it has a batch mode as well and some mention of joining files together, so that's another possibility.

hth,

-synthoid

You can do this in Bias Peak.

What you want to do is create a long repeating wave of your watermark that is longer than the lengthiest wave you are going to process. You need to open it in Peak, then do cmd-a and cmd-c to copy the entire contents to the clipboard. Then go to the Batch Processor from the file menu. Click 'add' at the left hand side, and open it's settings at the right and choose a percentage mix, e.g. 10%. Then underneath it, choose 'Apply just to first 100%'. What this will do is mix your clipboard wav only up to 100% of the length of the file being batch processed, so it won't make waves longer or shorter than the input file.

I recommend also dropping a normalize after this process, because if any of your files are already loud, adding 10% to them may cause them to clip. I believe the batch process will be done in 32bits floating point, so you should be able to add the watermark then normalize to contain the audio at a consistent level regardless.

Click the Set button at the bottom to choose output location and file format. Then up top left click on the ON to enable batch processing. When you then press OK bottom right, it goes back to Peak's wave window. From now you can drag and drop any number of source files directly onto the Peak icon in your Dock, and it will automatically batch process the lot and spit out files to your chosen destination.

I tried the above, and it worked fine mixing in 10% of my clipboard file but retaining the length of all input files.

This is what you should see!

A while ago, Benedict Roff-Marsh released a Windows VST called Preview Buddy that could do exactly this. I remember because I provided some audio files saying things like "demonstration" that the plugin could insert at intervals in the processed material.

It used to be bundled with Preroll Recorder, but doesn't seem to be any more.

Perhaps drop Benedict a line via Benedict Roff-Marsh: Composer, Synthesizer and Sound Bank Developer: Brisbane, Australia and see if he can send you the VST?

Thanks everyone for this wonderful help. I had a chance to test this out in Peak and it worked beautifully and it's super quick to batch process large amounts of files once this is all setup. I've been looking for a solution for this for a long time and it's amazing that this has been figured out. Thank you Thank you Thank you!

Hi Evaw,
Everything is now working ok except for the "Apply just to first 100%" function.
It seems that peak is outputting a file that is the exact length of the watermark file that I copied instead of the length of the music files that this is being applied to. If the music file is longer than the watermark file then the outputted file will properly remain the length of the music file. The problem is with short music files that are let's say 15 seconds. If I have to make my watermark file longer than my longest music file, then my watermark file should be around 15 minutes. So that means that all my outputted files will be 15 minutes long which is obviously unusable.
Any ideas?

Hello just

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I'm currently looking for a batch audio watermark tool. I've used Audio for other kinds of batch processing, but keeping the same track duration and processing hundreds of files are important features. What are the better options these days?

FYI. Today I found this one that works well enough on Windows 11. Does the job similar to Bias Peak. Its a shame Wavelab does not have a batch watermarking feature. $29 price tag is very fair for what I need.