Punching in and out on a recording is a concept that goes back to traditional analogue multitrack recorders. This is not something that your typical consumer tape deck can do. The basic idea is that you may want to play the track you've just recorded up to a certain point, then start recording, and then revert back to playback, in one continuous process. This is handy for replacing certain parts of a track that don't sound right. Trying to record right at the offending part (as in the past exercise) makes it difficult to hear and feel the context of the part you are trying to replace.
Only the tracks that are record-enabled will be affected by punching.
There are two ways to punch: by predefining punch-in and punch-out points with Logic's Autodrop feature, or by using key taps to punch in and out as you record (that is, punching on the fly).
Autodrop is Logic's way to predefine the area you want to punch. Autodrop uses a process similar to creating a cycle Region to set punch-in and punch-out points. Once you define this area, the recording happens only between these two points, in your autodrop zoneeven if you start to record or play back from before the area you want to punch. In this exercise you're going to rerecord yourself speaking over bar 4, using the Autodrop feature.
Undoing a record operation does not erase the file from the drive. The file will still remain in the Audio window. You'll learn how to clean up unused files in just a few exercises.
Punching on the Fly (Logic Pro Only)
Instead of predefining the area you want to record, you can tap keys to punch in and punch out whenever and wherever you want. For this to work, Logic needs to be in the Punch on the Fly mode. This lets it know to be ready for a recording at any time.
When you're punching on the fly, it's important to initiate each punch-in and punch-out by using a command called Record Toggle. (Logic tends to behave sluggishly when you punch in by simply hitting the Record button while in playback.) Record Toggle is only accessible through a key command that is not assigned in the default Logic key command set. This key command toggles between the Playback and Record mode. During playback you use this key command to punch in, and then again to punch out. You can even punch in and punch out multiple times throughout the same track.
Let's set up the Record Toggle key command and try punch-on-the-fly recording.