I have many audio files, that need to adjust amplitude. Please see
before image. I need to decrease some parts are over than -6 db to -6 db. But some parts aren't over -6 db, don't need to change.
Is there a way to do this fast?
The best way to approach this is to use a 'dynamics' processor, such as a 'compressor'. This can be configured to take sounds that exhibit energy over a certain threshold and reduce the overall level by a set 'compression ratio'.