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Creating and cleaning your own samples in Logic


Blog Post: 

So you're creating a sampled and layered instrument. Maybe it's a drumkit or a set of bells.

In my case I sat at my drumkit and recorded all microphones. I hit the snare from very soft to very loud. I then did the same for every other drum.

To make things easy, I mixed down all my mics to one track. You could mix subgroups or get very complicated depending on what your end goal is and what your sampler software is capable of - but I like to keep it simple. The downside to mixing all mics down this way is that you'll have 6 tracks of noise for every drum sound - so if you hit 4 cymbals you'll have 24 mics playing back. If you have noisy preamps this can be a problem. Back to the process!

I renamed the regions so they would make sense later. You can separate them to different tracks and then in the arrange window use Right-click>Name and Color>Name Regions by tracks.

In logic you can use the Audio>Strip Silence function to split an audio file at the transients - it will slice the file at each location where you hit a drum.

You'll be able to reduce that super long audio file down to many smaller audio files in no time.

There are some controls on the Strip Silence window that you will want to adjust.

You may need to adjust the Threshold. If the sound is very quiet - set it lower. If your recording is very noisy then you may need to set it higher so it doesn't create a new region in random spots.

You'll probably want a very small amount of Pre Attack-Time. This will let the strip silence function grab that very small amount of audio at the beginning of your drum hit that was below the threshold amount.

Post-Release time will preserve the tail of your audio. I like to crank this up to 10 seconds and run through all my samples with the same settings.

Now you have many audio regions that have been created out of your long recordings. You'll want to take advantage of another logic command - Convert Regions to New Audio Files.

Go to your keyboard shortcuts (alt-k) and search for the command. Map it to a key that you are not using.

Highlight your audio files and choose a folder for them. Logic will process the file and create new files using the names you provided.

Now you're ready to get started with the next task of getting them into your favorite sampler!