Note BS5969 has been superseded by EN 60651:1994 / BS EN 60651:1994 / IEC 651:1979 / IEC 61672:2002-1
The calibrated SPL meter and the Android phone both showing 69dBA at the listening position of a BBC Wood Norton edit suite during line up.
|SPL meter compared to phone app after calibration|
Contributed by :- Shri. Swamy DN firstname.lastname@example.org