If you’ve ever been interested in good sound, then you’re probably familiar with Dolby Technology. The company has been instrumental in the spread of surround sound in cinemas and living rooms; it has helped shape the transition from analogue to digital surround sound, greatly simplifying the accessibility of surround sound, and most recently, with Atmos, presented a 3D sound playback method.
Ray Dolby – a name that stands for good sound
Without Ray Dolby, the world of audio technology would look different today. He was a visionary, inventor and founder of the most important company for analogue and digital audio formats. With his company, the Stanford graduate established the first noise reduction methods and played a major role in the development of surround sound. His special ambition was that his inventions should also be disseminated among private listeners.
Here you can find our detailed Portrait of Ray Dolby.
We perceive noises and sounds spatially, so we can tell exactly where a sound source is located and how it moves. With recorded sound, this was not possible for a long time. Dolby Surround has solved this problem: first introduced in 1982, the analogue reproduction process initially supported 3 channels, a fourth channel was added after an update in 1987. The technology is based on a matrix process that stores the information for 4 channels in 2 audio tracks. Today the process is only used in vintage systems. Matrices, on the other hand, are also important in times of digital audio information. The storage method is used in the new versions of Dolby Pro Logic, for example.
Dolby Pro Logic II
The Dolby Pro Logic standards are a revamp of surround sound. They prepare audio data that is actually only available in stereo for playback on surround systems. The current Dolby Pro Logic IIz standard even supports 9.1 setups. Upmixing” also works when the audio data is available for a 5.1 configuration. Dolby Pro Logic is integrated into many of our decoders to ensure that multi-channel systems can be played back to their full potential. These include our high-end AV receivers Complete 7, the DecoderStation 7 and the Concept E 450.
Here you find an article about Dolby Pro Logic II.
Dolby Digital (Plus)
When Dolby Digital first established itself in cinemas and then in living rooms in the 1990s, it marked the transition from analogue to digital surround sound. The lossy digital playback method supports 5.1 channels and is the standard on DVDs. Further development is Dolby Digital Plus. This potentially supports 13.1 channels and was developed for playback on HD TVs and for online content. Dolby Digital Plus requires less bandwidth and provides better sound quality. The Complete 7, DecoderStation 7 and Concept E 450 have a Dolby Digital decoder on board.
With our contribution to Dolby E, we looked at the sound production page. The codec enables the storage and editing of audio data. The data is stored in a maximum of 8 channels and can be edited independently. A special advantage is the coupling of the audio data to the images. This simplifies the editing of the images considerably. The codec can also be used to output standards such as Dolby Digital including the associated metadata.
Dolby Virtual Speaker
Strong surround sound without a 5.1 system? That’s exactly what Dolby Virtual Speaker (DVS) achieves. With this playback method, even stereo systems and soundbars create a room-filling surround sound, where the listener perceives sound events taking place to the sides and behind him. To achieve this, the audio signals are modulated in such a way that we perceive so-called virtual sound sources. A decoder for DVS is integrated into the Cinebar 21 and Cinebar 52 THX.
Learn more about Dolby Virtual Speaker on our blog.
Dolby True HD
Dolby True HD is a digital multi-channel Dolby standard that allows audio data to reach the listener without any loss of data. The process was developed for the Blu-ray Disc. It offers sound engineers enough space to store all data using intelligent storage methods. Our AV receivers Complete 7 and DecoderStation 7 of course also support this Dolby standard. However, it is largely at a disadvantage against its competitor DTS HD-Master.
Home cinema with heavy bass
With Dolby Atmos, the Californians have once again achieved a real coup. This standard extends the soundstage by the height dimension. If something happens above our heads on the TV display, we hear the corresponding sound from above with Dolby Atmos. Dolby relies on a new, object-based playback method. With this procedure, the 3D sound can be reproduced with a 5.1.2 system – provided that the speakers are prepared for Dolby Atmos and a corresponding decoder is available. The LT-5 speakers licensed by Dolby Atmos prove how good 3D sound can sound from such a system. The 3D standard is also used in a number of Dolby Atmos cinemas.
Learn more about Dolby Atmos .
Atmos-Sound from Teufel systems
With Dolby Vision, Dolby is also trying to set the standard for video playback. The standard is used for television pictures with a particularly high contrast range (HDR). In the meantime, it is becoming apparent that the standard is being adopted by film producers and equipment manufacturers, although there is also a competitor for Dolby’s “highly dynamic” picture format.
Learn more about here Dolby Vision
Teufel systems that support Dolby
©Clyde Adams III „Ray Dolby: Technologies Transforming the Entertainment Experience“ Certain rights apply. Quelle: Flickr.com