3 ms·

60 cycle hum probably would not work, europe uses 50hz

• kazinator 2y ago
  That's a big enough discrepancy that the program could have heuristics to figure it out, particularly if the record player is in the right ballpark. Also west Japan is 50, east 60. The main problem is: (1) there isn't a lot of hum on professionally produced records; (2) but there may be hum from the equpiment itself.