Why are there two Dolby Virtual Speaker technology logos, one saying Dolby Digital and the other Dolby Pro Logic II?
Many devices incorporate Dolby Digital and Dolby Pro Logic II to deliver a seamless surround sound experience. A product with a Dolby Pro Logic II/Dolby Virtual Speaker logo uses the Dolby Pro Logic II technology to expand stereo content to 5.1 channels of surround sound, then processes this through Dolby Virtual Speaker. This way the listener can experience 5.1-channel surround sound from a stereo source through two speakers. A product with a Dolby Digital/Dolby Virtual Speaker logo decodes 5.1-channel Dolby Digital soundtracks, then applies the Dolby Virtual Speaker process to the multiple channels. Because the soundtrack has already been encoded with Dolby Digital 5.1, each channel is discrete. Adding Dolby Virtual Speaker gives the listener a Dolby Digital 5.1 surround sound experience from two speakers.
Related Questions
- Why are a lot of newer Dolby Digital receivers touted as having Dolby Pro Logic II processing? Doesn Dolby Digital decoding leave Pro Logic in the dust?
- Why are there two Dolby Virtual Speaker technology logos, one saying Dolby Digital and the other Dolby Pro Logic II?
- Why are there two Dolby Headphone technology logos: one saying Dolby Digital and the other Dolby Pro Logic® II?
