Then please read the submitted article, the press release (https://www.cs.cmu.edu/news/2022/optical-microphone https://www.cs.cmu.edu/news/2022/optical-micropho

Then please read the submitted article, the press release (https://www.cs.cmu.edu/news/2022/optical-microphone https://www.cs.cmu.edu/news/2022/optical-microphone) or the paper itself (https://www.marksheinin.com/_files/ugd/a41a28_7d370603fafd419da387de85d8ecb5b4.pdf https://www.marksheinin.com/_files/ugd/a41a28_7d370603fafd41...) again, as it has nothing to do with audio quality.