This has to do with the drivetrain of the car. In simpler terms, the power delivery system of the car. A 2wd or a two wheel drive is any general stick shift(manual transmission) car you drive. Either the front two rotates and pull your car or the back two rotates and push your car forward. For a 4wd or a four wheel drive, you can switch to all of the wheels being driven. Provides better grip on the road.
How the system works. Active Noise Cancellation (ANC) is designed to dramatically reduce low frequency noise in the interior. The system operates whenever the car is running, regardless of whether the audio system is on or off. There are two microphones in the cabin area.
A section of pure noise from the soundtrack of an AVI video has been selected, and the noise reduction tool is being set up to do its magic. The process works by taking a sample of pure noise (i.e., just the sound you want to remove).ith narration, it's usually easy to find a space between phrases that contains only noise, but music is more difficult; look for pure noise at the beginning of a file, before the music starts, or at the end, after the music stops. After finding and selecting the noise, go.