What is the Dolby Digital® decoder?

Dolby Digital® is a device that decodes signals sent in the most popular format for digital spatial sound. The most common version of this format includes five individual surrounded channels plus a separate channel for low frequency sounds transmitted by a subwoofer. However, there are also several other versions of Dolby Digital®.

The most common use of the Dolby Digital® decoder is part of the home entertainment system. In most cases, the decoder will be formed by a device known as a receiver that connects to one or more sound resources and then distributes the sound to different speakers. Most receivers will also have a radio built -in, while some can also handle video signals. An alternative to the receiver is the All-in-One unit, in which the decoder and audio inputs are built into the subwoofer, which then connects to the speakers. Dolby Digital® decoder could also be built into a computer sound card.

Standard Dolby Digital form includes cochranaSeparate signals for left, center, right, left spatial and right spatial channels plus subwoofer. Spacious channels are often referred to as rear channels, although many sound experts suggest that relevant speakers should be placed on the side of the listener rather than behind them. Dolby Digital® is sometimes known as AC-3 or when used in ATSC and/52 television broadcasting.

Dolby Digital® variants include Dolby Digital Ex® and Dolby Digital Surround Ex®. Both of them produce a signal for the next speaker sitting behind the listener. The difference is that the former artificially creates the sound for the channel by "deducting" it from an existing signal, while the other includes an extra sound channel, which is specially built into the signal in the original record.

There are several other formats on which Dolby Digital & Reg can be covered; decoder. Dolby Digital Live® creates a spaceo from the video game of spaceThe sound of "while running". Dolby Digital Plus®, which requires playback of reserved equipment, stores more information to create a better sound.

Dolby Digital® decoders will also be able to handle Dolby for Logic®, an older format that carries a space sound in a standard stereo signal, but has only one or rear channel. Later variation on this is Dolby for Logic II®. This simulates Full Dolby Digital® from any stereo source rather than using information that were specially coded to provide the source. Unlike some similar simulation techniques, Dolby for Logic II® simply divides the original sound between different speakers rather than artificial sound formation.