When creating a audio BD, it should have an easy-to-use navigation and hassle-free experience for users.

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Auro-3D is an immersive 3D audio format developed by the Belgium-based company Auro Technologies. It is not part of the BD specifications, but it is an optional codec. It is competing against Dolby Atmos or DTS:X.

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 Dolby Atmos is an extension and successor of Dolby TrueHD developed by Dolby Laboratories. It is the same tech as Dolby TrueHD except it adds object-based metadata, real-time spatial sound, and additional height channels to created are more three-dimensional immersion without horizontal nor vertical limitations. It is very popular with movies and music albums. It's main competitor is DTS X.

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Dolby TrueHD (also known as Dolby Lossless) is an extension of Dolby Digital and successor of Dolby Digital Plus developed by Dolby Laboratories. It adds more channel support (up to 8 channels), more bitrate (18.64 Mbps), sampling frequency up to 192 Khz, and up to 24-bit resolution.

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Dolby Digital Plus, (also known as Enhanced AC-3) is an extension and successor of Dolby Digital developed by Dolby Laboratories for the transport and storage of multi-channel digital audio. It has a number of improvements over that codec, including support for a wider data rates (4.736 mbit/s), an increased channel count (7.1), and multi-program support (via substreams), as well as additional tools (algorithms) for representing compressed data and counteracting artifacts. 

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DTS Express is a compressed digital audio format that supports 5.1-channel audio and allows a higher compression rate than the DTS Digital Surround format developed by DTS, Inc. 

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THX (Tomlinson Holman's Xperiment) is a high-fidelity audio/visual reproduction standard and quality assurance system for movie theaters, screening rooms, home theaters, computer speakers, gaming consoles, and car audio systems. It was developed by Tomlinson Holman at George Lucas's company, Lucasfilm, in 1983. The THX system is not a recording technology or a sound format, and it does not specify a sound recording format: all sound formats (Dolby, DTS, PCM) can be "shown in THX." The iconic crescendo used in the THX trailers, created by Holman's coworker James A. Moorer, is known as the "Deep Note".

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The Blu-ray disc uses the Universal Disk Format (UDF) 2.50 developed by the Optical Storage Technology Association (OSTA) is an open, vendor-neutral file system for data storage for optical discs and it's a compatible-friendly format for both Personal Computers and consumer electronics environments. A BDMV application has a standard file structure similar to the DVD. 

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Interactive Audio is used for real-time interactive sound effects, usually for menus or video games.

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Dynamic Resolution Adaptation ( or DRA) is an audio encoding specification developed by DigiRise Technology.

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  Dolby Digital (or AC3) is a lossy audio codec created by Dolby Laboratories in 1991. First used for Laserdisc and then dominating the DVD market, it has become the international standard for home theater audio. The codec is based on the modified discrete cosine transform (MDCT) compression algorithm. It has a high bitrate of 640 kbit/s (80 KB memory) and can go up to 5.1 channels. On Blu-ray, it's used commonly for special features and audio commentaries due to its advantage of MP3-like lossy compression, low bit rate (192 kbit/s) without losing quality, and conserving disc space. The last patent expired on March 20, 2017, so it is now generally free to use.

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  DTS (or DTS Digital Surround) is a lossy audio codec developed by Digital Theater Systems, Inc. in 1991. This codec is based on the adaptive differential pulse-code modulation (ADPCM) audio data compression algorithm. It uses linear prediction and adaptive quantization. It is natively coded in big-endian byte order. One of the main advantages of DTS is that it provides high-quality audio while taking up less space than PCM. As a result, DTS has become one of the most widely used audio codecs for Blu-ray Disc titles, including both movies and music. Its popularity can be attributed to the fact that it delivers high-quality audio without taking up too much storage space, making it an ideal choice for developers who want to deploy high-quality audio without sacrificing storage capacity. It can go up to 5.1 channels and has a max bitrate of 1.524 Mbit/s (190.5 KB memory).

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🎧 PCM (Pulse Code Modulation) or LPCM (Linear pulse-code modulation) is an uncompressed lossless audio codec to digitally represent sampled analog signals. It is the same codec used in Redbook Audio CDs and Laserdiscs, except it has a high bit rate of 27.648 Mbit/s (3.456 MB memory) and up to 24-bit resolution. It is the best out of the audio codecs.

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