Wayne P.

The NCH HELP dialogues discuss compression relative to Zero dbm. That is the highest level displayed as well. I believe that files lower than that value are not high enough to operate the compressor. Try amplifying the file to reach zero dbm and try again. For me, only the highest portion of the file is affected - which is what compession is about. In compression, only the highest amplitudes are held to the setpoint (i.e., 6 db of compression), while the rest of the waveform is below 6 db and unaffected. I also have observed that if the file is amplified so that it is above zero dbm (above the display) it is not clipped, and so it is part of the compressed portion. For other amplification purposes, the signal is clipped (i.e., if you wish to "chop" of the overshoot peaks) from an otherwise good audio file.

I have conquered this problem, but it involves your computer shop. Wavepad builds "trash" files that gradually occupy too much space. Movie files seem to build it more quickly. My computer shop uses a program whose icon is "WinDirStat". When run, it identifies all stored files - including some program files that should NOT be deleted. The technicians know which ones are which.l But my technicians built two folders on my desktop that lists only the junk files. With that, I can open each of the two folders and delete them without risking damaging my programs.