Sax Mouthpiece Decible Comparison

Perceived Volume vs Actual Decibles
I’ve always thought my Klum London was the loudest mouthpiece I owned, hands down. But, here is a comparison with a Barone customized Otto Link, which I have always felt to be significantly softer. Each is played at low, medium and high levels of intensity, measured with a top rated decibel app. The readings confirm to me that perceived loudness for the person playing the mouthpiece and actual sound pressure are two differe