What is a key precaution when using the Pencil tool for waveform repair?

What is a key precaution when using the Pencil tool for waveform repair?

• A. It never affects adjacent samples
• B. It preserves original data automatically
• C. It can only be used on MIDI
• D. Always back up your session

Answer: (D)

The Pencil tool writes new sample data directly into the audio waveform, so edits can be destructive and difficult to undo once applied. Because of this, backing up your session beforehand is the strongest precaution: it lets you revert to the original material if the repair doesn’t turn out as hoped or if you want to compare results. Also, edits can affect surrounding samples through interpolation and neighboring data, so you can’t assume the original waveform is preserved automatically. The Pencil tool is applicable to audio, not limited to MIDI, and it does not guarantee automatic preservation of original data.

The Pencil tool writes new sample data directly into the audio waveform, so edits can be destructive and difficult to undo once applied. Because of this, backing up your session beforehand is the strongest precaution: it lets you revert to the original material if the repair doesn’t turn out as hoped or if you want to compare results. Also, edits can affect surrounding samples through interpolation and neighboring data, so you can’t assume the original waveform is preserved automatically. The Pencil tool is applicable to audio, not limited to MIDI, and it does not guarantee automatic preservation of original data.