File> Special Audio Processes>>Background Noise Reduction, Extra Volume Boost, High Pass Filter
We often recommend Special Audio Processes in Express Scribe to tweak things a bit. The High Pass Filter can be of great help, even on good recordings.
The others, Background Noise Reduction and Extra Volume Boost, can be hit and miss as far as their effect on the audio. Sometimes they distort things, and then other times they’re really helpful. Just play around with them and the different channels to get the best and clearest audio you can.
If you don’t like the results of any of the processes they can be undone.
File> Special Audio Processes>>Undo