The background to dialogue noise suppression

DNS dialogue noise suppression

Noise is all around us: traffic, aircraft, the noise inside vehicles, air conditioning, wind, rain and other water noises, the noise from domestic appliances and even excessive reverberation. It annoys people, and it can render many recordings unusable. So noise suppression techniques are used to clean up noisy dialogue for film production, suppress ambient noise for live TV and radio broadcasting, revitalise sound effects libraries, and enhance speech for forensic audio investigations.

Until CEDAR's Academy Award winning DNS technology appeared, people were forced to use processes such as low-pass filters, noise gates, dynamics processes, or processes developed from analogue encode/decode noise reduction systems to try to reduce this noise. These often proved inadequate. Filtering is not selective about what it removes, and there is no relationship between the input and the filtering effect. Gates have no effect when the desired signal is present and lead to unnatural gaps in the signal. Other processes generate pumping, distortion, and other unnatural effects.

The original CEDAR DNS process overcame all of these problems, and resulted in a string of awards from the movie industry and the wider audio community. Today, there is a further development of the DNS algorithm, designed specifically for portability and speed of use, and this forms the core of the DNS 2, which combines portability, flexibility and extreme ease of use in a unit so small and light that you can slip it inside your pocket or equipment bag.

It's the dialogue noise suppressor that anyone can use anywhere.

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