Dolby Virtual Speaker
Dolby Virtual Speaker is a technology developed by the American company Dolby , which, like Dolby Headphone with headphones, tries to simulate the hearing impression of a 5.1 surround sound system via a conventional pair of speakers . It therefore represents a technically simplified form of Dolby Digital surround sound.
With special electronics ( virtualizer ) it is possible to simulate a spatial sound with only two speakers. The only two "front speakers" take on the sound system of the "rear speakers" and the "center box". In doing so, they also simulate the sound effects of the remaining speakers. To simulate the surround sound, the stereo image is expanded depending on the frequency Under certain circumstances, room walls can amplify this simulated surround sound.
- Lower costs compared to a Dolby Digital surround sound system
- Lighter construction
- Space-saving because it is compact
- The listening area is restricted to 1/3.
- Despite a subjective spatial sound, noises that come from "behind" cannot really be located or are perceived in a completely different place than originally intended.
- Despite all the technical tricks, the surround sound properties are not as good in a 2.1 system (Virtual Dolby Digital) as in a real 5.1 system (Dolby Digital).
Dolby Virtual Speaker is used in televisions, notebook PCs and increasingly also in compact surround sound receivers in order to generate relatively high-quality surround sound in a space-saving manner.
- Thomas Görne: Sound engineering . 1st edition, Carl Hanser Verlag, Leipzig, 2006, ISBN 3-446-40198-9
- Official website with the opportunity to demonstrate the technology