4 Replies
Bob O'Donnell

Storyline's editor only gives you basic editing functions. You can remove the humming in between audio pauses by highlighting the offending part and inserting silence.

If the hum is throughout your audio clip then you would need to use an audio program to filter it out. There are some free audio editing software packages out there that can do it.

As far as the hum itself goes there could be multiple culprits. You can try setting different property options on your microphone, try plugging all your external devices into a single power bar to help eliminate electrical interference, and its possible you could simply have a bad cord or plug connection for the mic you are using. Try something simple like plugging it into the back of your pc vs the front port or using it to record on another pc. That might help isolate the hum issue.