I had originally purchased through appsumo, but unfortunately I ran into technical issues and it wasn't able to meet my needs to properly filter out sound.

Well, guess what? Now I'm kicking myself for doing the refund because the newer version works EXCELLENT. I'm on a regular subscription plan and the sound filtering is greatly improved. I also gained a sense how the filtering works...it clearly seems to be based on proximity of main sound source. When I had to move away from my desk and still speak into the speaker microphone, my voice was not picked up...so it's by design and I think that's perfectly fine.

So I'm kicking myself that I'll be paying monthly, but to be honest, I'm just satisfied to know that the solution is working very well now given I have my dogs by my side in the office during calls and it's a non-issue.