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Before we get started working on the remix, it's important to tweak some parameters within Logic and optimize its performance. First and foremost, you want to check your Sample Rate and underneath Settings, we go to Audio, and we see that our project has a Sample Rate of 44.1. This is very important, because when you're receiving vocals for a remix, some times the vocals might not be a 44.1. I've certainly received vocals that are at 48K. It's important to make sure that your logic sessions' Sample Rate matches the Sample Rate of the vocals that you've received for your remix.
Next, under the Preferences, there is a pull-down menu and I go to the Audio menu. Here I will find my Buffer Size, otherwise known as Latency. Latency is essentially a delay, the default is 256 samples, which results in a 13.6 ms delay. You can see, as I pulled on this menu that there are different choices, if I click on 1024, it results in a 48.4 ms delay. So how is this setting affect our remixing work? Well, when it comes to using some of Logic's virtual synthesizers that may require more CPU load than the others, the I/O Buffer is very important, because if the I/O Buffer is set too low, you'll actually sure what sounds like distortion, which is the audio I/O Buffer getting clogged with information and it can't process it all in time.
You can certainly change this setting throughout the process of working on your remix, it really depends on what you're doing and if you're noticing delays and they become distracting, then all you have to do after you change the setting is click Apply Changes, and the change will take effect. Next is the Recording Path. Generally when you open up a blank session in Logic, it creates what's called an Audio Files folder. But I like to double check and make sure that the audio files are path to the correct folder and the way to check is to click and hold the Record button and this menu pops up and you go to Record Settings.
And as you can see, No Recording folder has been set. So I choose Set, and I go into our exercise files and I path it to Audio Files and I click Choose. Now any external audio that's recorded, any file merging, anything that results in the creation of a new audio file will place the new audio file in this folder. Why is this important? When it comes to working on computers, file organization is of the utmost importance. If you happen to share a session with another producer and you take your session off your hard drive and you put it on his hard drive or you are sending files back and forth over the Internet, and your exercise files or audio files are scattered in multiple folders, when your partner opens up the session, there will be missing audio, and this is a nightmare.
I've been through it many, many, many times, and I cannot stress enough that file organization is key. So double-check the recording path and make sure that it is indeed path to the audio files folder of your desired session. In the lower right-hand corner of the Transport window you'll see a CPU meter and hard drive meter. The CPU meter lets you know how much work the computer is doing, it's a System Performance meter. The hard drive meter let's you monitor disk activity, as in hard disk activity.
So I'm going to open Sculpture, which is one of Logic's Virtual Synths, and you'll see as I play the notes that the CPU meter will start to rise a little bit. (Music playing) So as you can see, just playing five notes on the Virtual Synths causes the CPU meter to move probably about 1/8 to 1/10 of its limit. So you can imagine, as you're building up your remix and you have 7, 8, 9, 10 maybe 12 or 14 Virtual Synths going at the same time, this CPU meter can get pretty high.
So this is something that you want to pay attention to, because it can result in the computer actually not being able to perform all the tasks that you are asking it to do. So if you are experiencing odd computer behavior, check the system usage window first. It's easy to lose track of CPU usage as you are working on your mix. Be aware that some Virtual Synths, like I just showed you with Sculpture, can really tax a CPU and it might make sense to convert those parts to audio files, which we will cover later in the course.
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