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When editing audio, the Pencil tool has one function, to redraw waveforms. Often this is done to repair waveforms, such as to eliminate an unwanted pop or click on the track. To do this we need to zoom in all the way on to the audio track, so that the waveform becomes a single line. So we can use the Zoom tool to do that, by clicking like this, or what's even easier is that we can hit the zoom memory location number 5 and that will take us all the way down to the waveform level.
Now if we switch over to the Pencil tool, and we can just draw our new waveform, and to do that I just simply clicked and dragged my pencil across the waveform there. You can undo this drawing, which I'm going to do, but if you do end up saving the changes to this original waveform, the audio file is permanently changed. So back to the Pencil tool, if we right -click on that, we can see that there are actually seven flavors of the Pencil tool, Free Hand, Line, Triangle, Square, Random, Parabolic and S-curve, and we can use the F10 key to go through all of them.
Now with all these different shapes there are actually a lot of uses for the Pencil tool. However, not a lot of them are audio editing related. So I am just going to mention a few of them here quickly and then cover them with more examples in other movies. So first I am going to zoom out, and I am going to grab the Free Hand Pencil tool. Now I am going to go down to this automation line, the volume, and I can click and drag and that creates new automation. I can also go into the Tempo editor here and click and drag and that will make tempo events.
If I go down into this instrument track, I can actually add notes, and let me zoom in to show this a little bit more. I am going to switch over to a notes view as well, and back to the Pencil tool. (Music Playing) And what's really cool about the Pencil tool here is that it actually kind of acts like a smart tool. So if you mouse over a note, it turns into a Trimmer here at the edge, so I can click and drag, and extend or shorten that note.
It becomes a Grabber if I mouse into the middle of the note, and now I can click and grab it and move it somewhere else. (Music Playing) And I can also erase MIDI notes with the Pencil tool. If I press the Option key on a Mac or the Alt key on a Windows machine, and the Pencil tool will flip around and turns into an eraser so you can erase the notes. If I click on this now, the note will be gone. And finally with the Pencil tool, if I switch this over to velocity, I can edit these velocity stocks, just by clicking and dragging.
So as you can see here, the Pencil tool has a lot of functions. I use it for editing audio, MIDI and automation in almost every session I work on, and I'm sure you will too.
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