Here is the modification. I trimmed down the box so the sound wouldn’t echo inside. I also hung sheets on 2 of 3 walls to help baffle the noise. Also notice the microphone and pop filter. The pop filter really does help. I bought one, but you could easily make one from a coat hanger and pantyhose. This set up is a compromise between sound quality and feeling like I had room to act. You’ll also notice the wrapper of a cough drop. I talked so much that my mouth was dry and throat sore.