Lesson 10

Changing Software Instruments And Loops To Audio
Up to this point we have been working with MIDI data only, not audio. Logic allows you to export an entire project as an MP3, Wave, or AIF file. You can also covert a single Software Instrument track into an audio file.
Bouncing A Project
Let's start by bouncing an entire Logic project down to a stereo file. This is a simple way to export your project to an MP3, WAV, or AIF file.
Open up your C Major scale project from the last lesson. If you have deleted it, simply recreate it again.
I am going to add a simple drum loop to this project, so that I will have two MIDI tracks (I am using a MIDI loop rather than an audio loop). My
Arrange window looks as follows:
Yes, this is a simple Logic project, but it will serve as an easy example on how to bounce a project down to a stereo file.
Once you are happy with your mix, you can now bounce the entire Logic project down to a stereo file.
Click on the
Bounce icon located in the upper right hand corner of the Arrange Window.
You will now see the following dialog box:
Let's start by naming our mix in the
Save As: dialog box.
Since I want to save this as an MP3 file I am going to check the
MP3 Box under Destination.
At this time you may also decide your bit rate for your MP3 file.
Logic will now bounce your project down to a stereo MP3 file, as well an AIF file (since we also selected the
PSM box under Destination) located in your Bounces Folder in your Logic Project Folder
A very easy and straightforward process!
Bouncing A Pre-Recorded MIDI Track
For this next example I am going to show you how to bounce individual Software Tracks that you have already recorded, but want to turn into audio tracks.
Why would you want to do this? A lot of time when I deliver a project to a client, they want audio stems of each track. This is one method of changing a Software Instrument track into an audio track. I will also show you another method that you can do on the fly!
Let's start by turning our piano track into an audio track.
Solo the piano track by clicking on the s button next to the track name in the Arrange Window.
By doing this, Logic will only play the piano track.
Our piano track is only four measures so set up the
Cycle region for four measures.
This way we are not recording empty measures that take up valuable audio space in a project.
Click on the
Bounce icon located in the upper right hand corner of the Arrange Window.
You will now see the
Bounce dialog box. But this time note the changes that I have made:
I have named the track
PCM and MP3 and then reselect the PCM Box. Don't ask why, but for some strange reason Logic will not show the PCM choices unless I do this. You may have a different experience.
I am going to save this as a
24 Bit Wave File so enter the following:
I also want this added to my
Audio Bin for easy access later.
Open your
Audio Bin by clicking on the Media icon located in the upper right hand corner of the Arrange window.
Click on the
Bin tab and you will now see your piano wav file.
Click on the top
piano.wav file to select it and then drag it into the arrange window to the beginning of the sequence. Logic will automatically create an audio track for the file.
You can now delete the MIDI piano track if you so desire. You may also add effects, etc to your newly created piano audio track.
To view a brief tutorial on bouncing a MIDI track to audio, click on the following link:
Clip 14
Signal Flow In Logic
Up to this point we have only been routing our audio to
Out 1-2 in our Logic projects. For this tutorial we are going to be working with the Mixer in Logic.
There are two ways to bring up the mixer:
X on your computer keyboard.
Click on the
Mixer button at the bottom of the Arrange Window.
Mixer window looks just like a mixer in the "real" world. I have set up a short project using Piano, Bass, and a drum loop.
You will also notice that all the audio outs are routed to
Out 1-2 or Stereo Out.
Adding A Bus
We are now going to change our audio output for our software instruments. Instead of going to
Stereo Out we are going to set up a Bus to route our audio.
Let’s start with the piano. Under
I/O in the mixer track click on Stereo Out and select Bus 1
image023 image024
Notice that the
Stereo Out in the piano track now reads Bus 1.
You will also notice that a
Bus 1 channel strip appears in the Mixer Window titled Aux 1 with its output set to Stereo Out.
Repeat the above process and set the
I/O to Bus 1 for all the tracks.
Adding A New Audio Track
We now need to add an audio track so that we can route our bus tracks into the audio track.
Locate the
+ icon next to Global Tracks and click on it.
You will now see a familiar dialog box. Enter in the following:
Arrange window should now look as follows:
 By enabling
Input Monitoring, it allows us to hear the audio before it reaches the Audio Out 1-2 so that we can determine if the signal is hot enough to record or too hot so that the signal is clipping.
To view your audio signal using
Input Monitoring, click on the first Inserts slot in your audio track.
Select Metering, Level Meter, and then Stereo.
You will now see a
Level Meter for your audio 1 channel, allowing you to monitor the signal input.
I strongly suggest that you insert a
Level Meter into each track so you can monitor the incoming audio signal.
This is what our
Mixer window should now look like:
Notice that I have place the
Level Meter in my Mixer window for better monitoring of the audio signal.
Recording Audio
We are now ready to record some audio!
For this example I am going to turn my drum loop into an audio file.
The first thing I do is change the name of my
Audio 1 track to Drums. To do this
Make sure you are in the
Mixer window.
Double-Click on the Audio 1 track name and enter in Drums.
You will now see your drum audio track.
Since I only want to record my drum loop,
Solo the drum loop track by clicking on the S.
Now play your sequence and check the
Level Meter. You may have to adjust the volume of the drum track using the fader on the drum track.
The picture below shows a fairly robust signal.
Once you have set your
Level, rewind your sequence to the beginning.
Make sure that the
Metronome is turned off, especially if you are recording a MIDI track as the metronome will also be recorded.
Arm the
Drum Audio Track for recording by clicking on the R in the channel strip (it should start blinking)
Hit the
* key on your extended keyboard or click on the Record button in the Transport window to begin recording.
Hit the
Spacebar to stop recording and the drum audio file should now appear in your Arrange Window.
Repeat the above process to record other MIDI tracks.
While this method is somewhat slower than the
Bounce method described earlier in this tutorial, you can monitor your input signal as you go. Also, remember that you can set up different bus channels so that you can record more than one audio track at a time!
To view a brief tutorial on bouncing a MIDI track to audio using a bus, click on the following link:
Clip 15

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