When you film something using the microphone on the camera or an external microphone, is there always that hissing sound that you have to remove by running the video through a high pass or low pass filter? Or does it depend on the quality of the microphone? I have a pretty cheap microphone, and I always have that hissing sound. Both the internal and external microphones for my camera make that sound that I have to have removed from the audio. I've watched lots of videos taken by people and none of them have that hissing sound in them, so I was wondering if I'm just operating with really cheap equipment, or are all of those people manually having that hissing sound removed from their audio before uploading the videos. Thanks.