Once distributed, the compressed audio needs decoding.Īt the cinema, this decoding occurs in an audio processor, while in your home it can take place in a DVD player, a set-top box, a game console, or another familiar piece of equipment. The distribution of Dolby Digital audio can take many forms: a film print, a DVD, a television broadcast, a download. This process is called encoding.īut rather than simply converting waveforms to numbers blindly, Dolby Digital analyzes the original audio and intelligently determines what parts of the audio track are important to keep and what parts you're less likely to hear.īy retaining the important parts of the audio track and eliminating redundant data, Dolby Digital delivers excellent multichannel sound at low data rates. Since the audio we hear consists of analog waveforms, not ones and zeroes, the first step in the process of creating a Dolby Digital audio track is to convert the original analog signal into digital information. Encoding and decodingĭolby Digital operates in a world of ones and zeroes - digital information. This expands the creative palette for artists, and allows those of us in the audience to experience greater realism and excitement. ![]() With Dolby Digital, it's possible to include a full 5.1-channel audio mix on a film print or a DVD, or as part of a TV broadcast. The smaller the file, the easier it is to distribute. This maybe nothing but while watching some movies from cable TV channels that supports 5.1 Dolby, I can't hear sound from surround speakers, I have to change the EQ to Cinema, Game, or S-Master to get them working.At its core, Dolby Digital technology represents a very efficient way for movie studios, television networks, and other content providers to compress the size of multichannel audio files without impairing the sound quality. With front right speaker tested, I can hear audio coming out from right surround (but not from left surround), and pretty much the same for the left speakers. When testing center speaker, both surround speakers also has audio. I've watched some Dolby 5.1 test videos from Youtube, and from what I can hear, all speakers function normally. On the other hand, with Speaker Selection selected to "Home theater speakers", the Digital Output setting is greyed out, I have to change the Speaker Selection to "TV Speaker" so I can set it to PCM or 3 Bitstream options (Unprocessed / Re-encoded DTS / Re-encoded Dolby D), Hence my 2nd question, which should I choose? First, I selected Audio Return Channel to "On". Is that true? please cmiiw for this one.įrom Home Theater unit sound settings, there's a couple options (including Speaker Selection, Audio Return Channel and Digital Output). I'm a little bit confused because from what I read on Internet, optical / digital audio doesn't support DD+, and HDMI input supposedly supports that. I have updated both unit firmware to the latest version, and Home Theater unit is connected to TV through HDMI ARC and optical cable.įrom the TV sound settings (Expert Settings), HDMI Input Audio Format gives me 2 options (PCM and Bitstream), while Digital Output Audio Format gives 5 options (PCM, DD, DD+, DTS and DTS Neo 2:5), but except for PCM and Neo, other options are greyed out. I've spent hours trying to figure out if DD+ is configured properly but I haven't found an exact answer. I have Samsung 40MU6100 TV and Samsung HT-J5100K Home Theater, and afaik both support Dolby Digital Plus. ![]() Hi, I'm new to Home Theater world so I'm sorry if my question sounds silly or stupid.
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