I need a "Sound-Noise Filter"

[Xantix]

I have a digital camera and I can make movies with it but its microphone is not very good and there is no way I can change it.
So the sound of my movies is very low and accompanied with a constant noise (as if I was filming in the middle of a storm) due to the raise of volume I must make to ear something and that has nothing to do with the quality of my speakers.
I was wondering if there was a software filter that could, well, filter that noise so that I could boost up the volume and get a crystal clear sound.
Thanks.

[setarip]

Programs such as GoldWave and CoolEdit provide such capabilities...

[printergy]

"Sound-Noise Filter"

You have two plausible solutions:

1) Utilise a software noise-reduction application
2) Record the sound separately on independent hardware, then mux the two elementary streams (audio and video) into a single stream containing both Audio and Video.

SonicFoundry has a great suite of products. I personally use SoundForge 6 with the NoiseReduction plug-in. For consolidating the a/v streams, you can use Vegas 3 or a specific muxer like M2-Edit Pro.

Good luck.

[Rincewind256]

Did you check all options on the DigiCam?
On Sony DigiCams you can change the audio mix between the internal microphon and an extern mic.