Greetings. I was a Canon sales rep up until about a month ago and carried one of these nice little 320HS cameras with me for several months. In all the video I shot I never heard any unusual or distracting sounds, whether the video was shot indoors with low ambient noise, or outdoors. If this noise is audible in video taken outdoors I would recommend contacting Canon customer service and explaining the problem. I'd recommend not accepting it as is. Related to this, I do know there are certain models which have definite "noise" issues, which are (unfortunately) inherent in their design. The SX130 is one of these models, which produces a static-like noise audible in video taken indoors, and sometime outdoors on a calm and quiet day. This issue can not be "fixed", it was a design issue.