Lead Weight in different positions on neck
This was a (single) blindfold test. Although I did could not see the weight, my assistant who placed the weights did know which was which. A more rigorous experiment would have involved double blindfolds, one for each person.
The experiment involved adding a lead weight to three different parts of a saxophone neck. The weight was recorded twice for each position (near the mouthpiece, far from the mouthpiece and midway)
If there is any significant difference in sound caused by the weight or the position of the weight, then even if you don’t know what the different sound should be, you should be able to arrange them into discreet pairs of files, each pair containing two identical sounding files.