The Rebel XSi’s internal beeper provides a helpful chirp to signify various functions, such as the countdown of your camera’s self-timer. You can switch it off if you want to avoid the beep because it’s annoying, impolite, or distracting (at a concert or museum), or undesired for any other reason. (I’ve actually had new dSLR owners ask me how to turn off the “shutter sound” the camera makes; such an option was available in the point-and-shoot camera they’d used previously.) Select Beep from the menu, press Set, and use the cross keys to choose On or Off, as you prefer, as shown in Figure 3.6. Press Set again to activate your choice.