Canon POWERSHOT D20 User Manual page 47

Functions can be configured on the _1' tab. Customize commonly used
functions as desired, for greater convenience (p. 42).
;_!3Y Silencing Camera Operations
Silence camera sounds and movies as follows.
Choose [Mute], and then choose [On].
Sound is not played during movies if you mute camera sounds (p. 122). To
restore sound during movies, press the _ button. Adjust volume with the _'_
buttons, as needed.
Adjust the volume of individual camera sounds as follows.
Choose [Volume], and then press the @
button.
Choose an item, and then press the 4_
buttons to adjust the volume.
154