Operation methods and steps:

1. Right-click the sound material in PR to open AU.

2. Click the small triangle to find the center channel extractor.

3. Click on the preset option to increase the vocal by 10db. At the same time, this function can also be used to remove the vocal and only keep the accompaniment, which is more practical.

4. Click Identification, lower the side channel level to the bottom, and the amplitude identification is 0. You can press the space bar to play the preview and listen.

5. Then click Apply.

6. Finally, click Save to switch to PR.