I have pointed out the error that led to the conclusion.
However, people who confidently perceive this component of sound are forced to make another, the only possible conclusionThe error is your refusal to accept there could be another conclusion. Your error is accepting the belief of those who claim to "confidently perceive " there is a difference in the sound. In science you don't accept beliefs you test for proof. Until you acknowledge the fact that humans are easily fooled and have biases you'll never convince anyone outside those who already agree with your flawed methodology.