This post is in reply to Vitor's request for another explanation of Punch
and Roll record, which allows you to correct mistakes on the fly.
I'll use a simple toy example which you can easily try out yourself.
Say that you want to record yourself counting slowly from 1 to 10, with
pauses between the numbers.
You start the recording, and all goes well until you get to the number
seven, and you say eleven by mistake, and press spacebar to stop.
To use punch and roll record to correct a mistake on a track, that track
needs to be selected, and any other tracks not selected. So if necessary
select the track.
Next you need to position the cursor during a pause somewhere, such that
the recording before the cursor is fine, but it needs correcting afterwards.
In our example, the first six numbers were recorded OK, but the seventh
wasn't. So we want to position the cursor in the pause after the number six.
In our small example, you could do this by starting playback, and then
pressing the letter X after the number six. In a more realistic case, you
could do something like press the letter K to to move the cursor to the end
of the audio in the track, press comma a few times to get you to a time
before the final position that you want, start playback, and press X when
you get to the position that you want.
So you now have the cursor positioned.
Press shift + D to start punch and roll record. Playback starts a few
seconds before the cursor. During this time you can speak along with the
existing recording so that your voice gets warmed up, and you're in time
with the existing recording. When the playback position reaches the cursor,
then Audacity starts recording, and so you can carry on counting to ten,
having overwritten your mistake.
In punch a roll recording, the point at which the playback switches to
record is known as the punch in point, and as you've seen from the above
instructions, Audacity uses the cursor to mark the punch in point.
For more details, this is the punch and roll page in the manual:
https://manual.audacityteam.org/man/punch_and_roll_record.html
And this is a link to the punch and roll section in my Jaws guide:
http://vip.chowo.co.uk/wp-content/uploads/jaws/Audacity-2.3.0-Guide.html#punch-and-roll-recording
David.
