The matrix surround methods are making people be innovative and think of new ideas like digital designs. The digital designs allow many channels to be carried discretely, by allowing a two-channel control. Though it is required that surround sound signals are transported and kept in a distinct, full-resolution design this can result in usage of many volumes, which is expensive for normal broadcasting or home applications (Rumsey 40). As a result, many methods have been designed so that data is digitally recorded as a small bit compared to the supply, with reduced loss of sound appeal.
The Dolby AC-3 codec is used to create 5.1 surround sounds. It was created in 1992 to support multichannel systems on a 35mm layer. Later, it was used to DTV, HDTV, and DVD. The design uses both stereo and discrete multichannel equipment. The encoding system is used to condense audio recordings with less effect on the resultant sound value (Rumsey & McCormick 35).
The method works by sorting the audio recording into discrete groupings. The encoder checks the major frequencies at a particular position within a given time period. The encoder assigns bits to what is very important. As a result, the sorting procedure minimizes the file capacity significantly. The AC-3 also handles metadata that is found in the data track. The metadata instructs the AC-3 on how to utilize the surround sound. The Dolby encoder device was initially hardware equipment and was later swapped with software devices. Dolby presently authorizes its AC-3 encoder to many software traders so that they can program their surround sound systems (Gilbert & Haberl 118).
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