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What is Dolby TrueHD Lossless Audio

Rob Parsons Updated on Apr 15, 2022 4:22 PM

Dolby TrueHD is a lossless audio codec created by Dolby Laboratory. It is used in home theater like Blu-ray disc player and A/V receiver, which is considered to supersede AC3 (Dolby Digital). Dolby TrueHD takes MLP (Meridian Lossless Packing) to compress audio samples. Its bitstream is able to carry as many as 16 discrete audio channels. Dolby TrueHD is supportive of up to 192 kHz of sample rate and accommodate as much as 18 Mbps in bitrate. Dolby TrueHD soundtrack can be transferred either through HDMI from Blu-ray disc (Blu-ray to MP3) to home theater receiver or via a set of 5.1/7.1 channel analog audio connection to the speaker. However, unlike Dolby Digital, Dolby Digital EX and Dolby Digital Plus, Dolby TrueHD signal is unable to be passed using optical or coaxial connection.

Advanced Features:

Lossless Compression: Adopting 100 percent lossless compression technology, Dolby TrueHD lets you hear bit-for-bit audio content the same as the master recoding.

Multichannel Sound: Dolby TrueHD supports up to 7.1 audio channels, in an attempt to supply the most fantastic surround sound.

Dynamic Range Control: It allows you to reduce peak volume while still retaining every detail of the sound track, without disturbing others.

Future Expandability: With as many as 16 audio channels of pristine, lossless audio, Dolby TrueHD gets ready for the future.


Dolby TrueHD is mainly implemented on Blu-ray disc player, HD-DVD environment, A/V receiver, HTIB systems and next-generation gaming systems. When combined with HD video, Dolby TrueHD provides you with an unparalleled home theater experience with the best sound quality and HD image.

It competes with DTS-HD Master Audio which is also used on Blu-ray discs. If your home theater doesn't identity Dolby TrueHD on Blu-ray disc, then a default Dolby Digital will play.

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