Dolby True HD: Dolby True-HD describes an audio system specially developed for the growing HD marketCodec, specially designed for use on Blu-Ray-Disks was developed as an optional, lossless surround sound format. The codec supports up to eight channels (corresponds to 7.1) with 24-bit samples and a sampling rate of 96 kHz. If fewer than 8 channels are used, the sampling rate can be increased to 192 kHz. The maximum data transfer rate is 18 MB/s.
Loss-free because the digital data stream is bit-exact to 100% of the sound mixer's mix Mastering corresponds to the film. It is based on MLP (lossless compression algorithm for digital sound recordings) and sees itself as its successor. The transmission takes place via HDMI In 1.3.