Dolby True HD is among the two best surround sound formats present in today's Blu-ray-based home entertainment system systems. This lossless surround format is similar to the sound heard at the theater and comes across best via HDMI connection from Blu-ray players.

 

Dolby TrueHD is often a lossless audio format, which means there isn't a fidelity lost when encoded onto Blu-ray.

 

The sole affordable Dolby TrueHD with the HDMI connection to a receiver which could decode it, or having a 6-channel analog connection between a BLu-ray player with such outputs and also a receiver with a multi-channel input.

 

The next step down in fidelity with Blu-ray players is Dolby Digital Plus, which is entirely on some Blu-rays and also on some streaming titles from Netflix and some other streaming services. Inside Blu-ray specification, Dolby TrueHD is surely an optional codec. Dolby TrueHD audiotracks may carry up to 24 bit audio in up to 8 discrete audio channels at 96 kHz or as much as 6 channels (5.1 surround) at 192 kHz. The maximum encoded bitrate is 18 Mbit/s (exactly like the uncompressed rate). Since TrueHD is usually an optional codec, some other (primary) AC-3 audiotrack has to be present on Blu-ray discs that have a TrueHD track. True HD on HD DVD

 

Inside HD DVD format, Dolby TrueHD was a mandatory codec. The HD DVD specification permitted the only (primary) audiotrack of a movie being encoded in Dolby TrueHD, along with the specification requires support for up to 2 channel (stereo) decoding. In practice all HD DVD players decoded multichannel (5.1) programming, and of the few HD DVD movies being encoded with Dolby TrueHD audiotracks, all were multichannel.