Nikon N1530 Reference Manual page 59

3
Press flexible button 4 (O).
The sound is set.
C
Muting All Sounds
On the screen displayed in step 1, press flexible button 4 (u Turn sounds on or off) M
flexible button 3 (z Turn sounds off), in that order, to mute all sounds.
To cancel the mute, press flexible button 4 (u Turn sounds on or off) M flexible button 2
(u Turn sounds on), in that order.
Shooting Features
Change Sounds
39
Pick a shutter sound