Hi to all/ how to reduce echo in video on shotcut

[MusicalBox]

Adobe Enhance have been suggested in the two topics below. It’s not done in Shotcut like you ask, but it might work for your echo problem.

Removing background hiss on VOICE OVER NARRATION

Hi guys, do you know how to remove background hiss on Voice over narration. I badly need help on it.

Lector voice - how to add more bass

Although this will not add the extra bass you want, you can get good results from an average voice recording using the free service below: Maybe after enhancing the audio you will get a better outcome with audacity or the shotcut equaliser? Just an idea.