To turn off the sound that the camera makes when you first turn it on, you will need to turn off the button sound.
(1)Press the menu button.
(2)Using the rotary multi selector, scroll down and highlight the wrench tool, and press OK(setup menu)
(3)Scroll down and select "Sound Settings" and press OK
(4) Highlight "Button Sound" and press OK
(5) Highlight "Off" and press OK.
see page 77 of the S9500 reference manual in the link below:http://support.nikonusa.com/app/ans...