Hello, this is the first time I’m using the Crystal Sound software, and I’m really impressed. I just purchased it and tested it on my computer. Firstly, I recorded my voice, and there was no background noise. Then, I created simulated background noise using a phone to test it. After enabling the Crystal Sound mode and recording, I was amazed to find that my voice was crystal clear and there was no trace of any noise, even though the simulated noise was close to the microphone. The sound quality was excellent. I highly rate the quality of this software and recommend that you don’t miss the opportunity to get it. I will continue to test other features and look forward to more amazing experiences. Thank you to the team who developed this software, and I’m proud that it’s the result of a Vietnamese programming team. Wishing you further success in your development.