Audacity Forum

Thanks for the suggestion. I tried doing the equalization as you described but it didn't remove the unwanted sound. Any other ideas?

Hi, I'm using Audacity 2.0 on Windows Vista 32-bit. I'm new to using Audacity for more than the simplest tasks. The attached audio sample was originally recorded on a cassette recorder in the 1980's. There is an annoying ringing in the background. We created an mp3 and used it for copyright registra...