Dolby Atmos










Dolby Atmos logo


Dolby Atmos is the name of a surround sound technology by Dolby Laboratories that was introduced in June 2012 with the release of the animated film Brave.[1]




Contents






  • 1 History


  • 2 Technology


  • 3 Consumer implementations


    • 3.1 Home theater version


      • 3.1.1 Implementation and differences from commercial implementations




    • 3.2 Headphone and smartphone implementations




  • 4 See also


  • 5 References


  • 6 External links





History




Dolby Atmos Monitor at SoundFirm, Melbourne, Australia


The first Dolby Atmos installation was in the Dolby Theater in Los Angeles, for the premiere of Brave in June 2012.[2] Throughout 2012, it saw a limited release of about 25 installations worldwide, with an increase to 300 locations in 2013.[3] There were over 4,400 locations as of April 2019. Dolby Atmos has also been adapted to a home theater format and is the audio component of Dolby Cinema. Most electronic devices since 2016, as well as smartphones after 2017, have been enabled for Dolby Atmos recording and mixing.


R.E.M.'s 1992 album Automatic for the People was remixed in Dolby Atmos for the album's 25th anniversary in 2017, making it the first major music release to utilize the technology.[4]



Technology


Dolby Atmos technology allows up to 128 audio tracks plus associated spatial audio description metadata (most notably, location or pan automation data) to be distributed to theaters for optimal, dynamic rendering to loudspeakers based on the theater capabilities. Each audio track can be assigned to an audio channel, the traditional format for distribution, or to an audio "object." Dolby Atmos by default, has a 10-channel 7.1.2 bed for ambience stems or center dialogue, leaving 118 tracks for objects.[5]


Dolby Atmos home theaters can be built upon traditional 5.1 and 7.1 layouts. For Dolby Atmos, the nomenclature differs slightly: a 7.1.4 Dolby Atmos system is a traditional 7.1 layout with four overhead or Dolby Atmos enabled speakers.[6]


With audio objects, Dolby Atmos enables the re-recording mixer using a Pro Tools plugin (available from Dolby) or a Dolby Atmos equipped large format audio mixing console such as AMS Neve's DFC or Harrison's MPC5, to designate the apparent source location in the theater for each sound, as a three-dimensional rectangular coordinate relative to the defined audio channel locations and theater boundaries.[7]


During playback, each theater's Dolby Atmos system renders the audio objects in real-time such that each sound is coming from its designated spot with respect to the loudspeakers present in the target theater. By way of contrast, traditional multichannel technology essentially burns all the source audio tracks into a fixed number of channels during post-production. This has traditionally forced the re-recording mixer to make assumptions about the playback environment that may not apply very well to a particular theater. The addition of audio objects allows the mixer to be more creative, to bring more sounds off the screen, and be confident of the results.


The first generation cinema hardware, the "Dolby Atmos Cinema Processor," supports up to 128 discrete audio tracks and up to 64 unique speaker feeds.[8]
The technology was initially created for commercial cinema applications, and was later adapted to home cinema.[9][10] In addition to playing back a standard 5.1 or 7.1 mix using loudspeakers grouped into arrays, the Dolby Atmos system can also give each loudspeaker its own unique feed based on its exact location, thereby enabling many new front, surround, and even ceiling-mounted height channels for the precise panning of select sounds such as a helicopter or rain.



Consumer implementations



Home theater version


At the end of June 2014, Dolby Labs' hardware partners announced that Dolby Atmos would soon be coming to home theaters.[11]


Among them were several established manufacturers of audiovisual home entertainment devices announcing new products that have now brought Dolby Atmos into home theaters across the globe. Products offered range from premium home cinema receivers and preamplifiers to mid-range home-theater-in-a-box (HTiB) packages of well-known brands such as Denon, Marantz, Onkyo, Pioneer and Yamaha plus further models from lesser-known manufacturers and brands.[12][13][14][15][16][17] On June 4, 2018, Apple announced that tvOS 12 for AppleTV 4K will support Dolby Atmos when released in Fall 2018.


The first movie to be released on Blu-ray with Dolby Atmos was Transformers: Age of Extinction.[18][19] The first video game to use Dolby Atmos was Star Wars: Battlefront with a special agreement between EA and Dolby Laboratories.[20][21] This game uses HDMI bitstreaming from the PC to deliver Atmos audio to consumer Audio-Visual Receivers. Overwatch and Battlefield 1 for PC also have Atmos audio
.[22] On the Xbox One, Crackdown 3 and Gears of War 4 also support Atmos.[23]



Implementation and differences from commercial implementations


Because of limited bandwidth and lack of processing power, Atmos in home theaters is not rendered the same way as in cinemas. A spatially-coded substream is added to Dolby TrueHD or Dolby Digital Plus. This substream is an efficient representation of the full, original object-based mix. This is not a matrix-encoded channel, but a spatially-encoded digital signal with panning metadata. Atmos in home theaters can support 24.1.10 channels,[24] and uses the spatially-encoded object audio substream to mix the audio presentation to match the installed speaker configuration.


In order to reduce the bitrate, nearby objects and speakers are clustered together to form aggregate objects, which are then dynamically panned.[25] The sound of the original objects may be spread over multiple aggregate objects to maintain the power & position of the original objects. The spatial resolution (and hence the strength of the clustering) can be controlled by the filmmakers when they use the Dolby Atmos Production Suite tools. Dolby Digital Plus has also been updated with Atmos extensions.[5]



Headphone and smartphone implementations


Dolby Atmos also has headphone implementations for PCs, the Xbox One, and mobile phones. They work by converting the Atmos channels into a virtual Binaural 360° output using the usual two headphone speakers. This technique is an improvement on the previous Dolby Headphone technology, though mainly because it simply adds the extra Atmos channels.


Windows 10 Version 1703 Creators Update added platform-level support for spatial sound processing including both Windows Sonic for Headphones and Dolby Atmos for Headphones.[26] Dolby Atmos for headphones requires a licence to function which can be purchased or redeemed inside the Dolby Access app.


Dolby Atmos has smartphone implementations for devices including but not limited to the Razer Phone, the Razer Phone 2, the ZTE Axon 7, Samsung Galaxy S9/S9+, Samsung Note 9, Samsung Galaxy J8, Lenovo K8 Note, Lenovo Vibe K5(A6020), Huawei Mate P20 Pro and Nokia 6. [27] This implementation uses both the binaural headphone technology and a dual loudspeaker virtual surround sound implementation.



See also




  • Ambisonics, a similar spatial sound encoding technique. Nowadays used for some games and VR Audio


  • Auro-3D, a similar, completely channel-based 3D surround system


  • DTS:X, a competing fully object-based system



References





  1. ^ "Pixar's Brave to debut new Dolby Atmos sound system". BBC News. 25 April 2012. Retrieved 2012-04-26..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output .citation q{quotes:"""""""'""'"}.mw-parser-output .citation .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-maint{display:none;color:#33aa33;margin-left:0.3em}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}


  2. ^ Giardina, Carolyn (May 1, 2012). "Peter Jackson Considering Dolby Atmos for 'The Hobbit'". The Hollywood Reporter. Retrieved 2012-06-02.


  3. ^ "Dolby Atmos Reaches 85-Title Milestone with New Films Announced at ShowEast 2013 - Dolby Laboratories, Inc". Investor.dolby.com. Retrieved 2015-07-23.


  4. ^ "R.E.M.'s Peter Buck Talks 'Automatic for the People' Before 25th Anniversary Reissue: 'I Didn't Expect It to Be a Huge Hit'". Billboard.


  5. ^ ab "Dolby Atmos® for the Home Theater August 2014" (PDF). Cdn-blog.dolby.com. Retrieved 2015-07-23.


  6. ^ "Dolby Atmos for Home". www.dolby.com.


  7. ^ Authoring for Dolby Atmos Cinema Sound Manual (PDF) (Third ed.). Dolby Laboratories, Inc. 2014. pp. 69–103. Retrieved 7 December 2014.


  8. ^ Hidalgo, Jason (April 26, 2012). "Dolby's Atmos technology gives new meaning to surround sound, death from above". Engadget. Retrieved 2012-06-01.


  9. ^ "Dolby Atmos surround sound technology could transform video games". Digital Trends. April 24, 2012. Retrieved 2012-06-02.


  10. ^ Bolton, Nick (April 24, 2012). "New Dolby Technology to Make Horror Movies Scarier". New York Times. Retrieved 2012-06-01.


  11. ^ "Dolby Atmos for home theaters: FAQ". Dolby Laboratories Inc. Retrieved 2014-07-19.


  12. ^ "Denon Press Release: Denon Unveils New AV Receivers for Dolby Atmos Sound". Denon.co.uk. Retrieved 2014-07-19.


  13. ^ "Marantz Press Release: Marantz Unveils New AV Receiver and Preamp/Processor for Dolby Atmos Sound". Retrieved 2014-07-19.


  14. ^ "Onkyo Press Release: New Onkyo High-End A/V Components Debut with Dolby Atmos, 4K/60 Hz Video, and Premium Build". Eu.onkyo.com. Retrieved 2014-07-19.


  15. ^ "Onkyo Press Release: Onkyo Unveils Dolby Atmos-Ready HTiB Packages, Speaker Systems, and Base-Model A/V Receiver with HDMI 2.0 and Bluetooth". Eu.onkyo.com. Retrieved 2014-07-19.


  16. ^ "Pioneer Press Release: Pioneer announce Dolby Atmos compatible high-end AV receivers". Pioneer.eu. Archived from the original on 2014-07-06. Retrieved 2014-07-02.


  17. ^ "Yamaha Press Release: Dolby Atmos® through the new AVENTAGE RX-A3040 and RX-A2040 AV receivers". Yamaha.com. Archived from the original on 2014-07-25. Retrieved 2014-07-19.


  18. ^ "Press Release: Dolby Atmos Comes to the Home Via Blu-ray and VUDU to Transport Entertainment Enthusiasts Into a New Dimension of Sound". Businesswire.com. Retrieved 2014-09-28.


  19. ^ Webster, Andrew (April 24, 2012). "Dolby Atmos audio hits moviegoers with sound from all directions". Vox Media. Retrieved 2012-06-01.


  20. ^ [1][dead link]


  21. ^ Pendlebury, Ty. "The surround sound awakens: How Dolby Atmos makes Star Wars Battlefront a better game". CNET.


  22. ^ Yuen, Ced (9 February 2017). "Dolby Atmos may make you a better gamer – here's why". Trusted Reviews.


  23. ^ audio, Jon Porter 2017-06-12T02:18:05 162Z Home Cinema. "Crackdown 3 and Gears of War 4 are Xbox's first two Dolby Atmos games". TechRadar.


  24. ^ "Dolby Atmos home Theatre Installation Guidelines" (PDF). Dolby Laboratories. April 2015. Retrieved 2016-05-28.


  25. ^ "Dolby Atmos Production Suite Guide" (PDF). Developerdownload.dolby.com. Retrieved 28 January 2019.


  26. ^ "Spatial Sound". docs.microsoft.com.


  27. ^ "Mobile Phones With Dolby". www.dolby.com.




External links


  • Dolby Atmos webpage



[2]







Comments

Post a Comment

Popular posts from this blog

Information security

Image
This article is part of a series on Information security Related security categories Internet security Cyberwarfare Computer security Mobile security Network security Threats Computer crime Vulnerability Eavesdropping Malware Spyware Ransomware Trojans Viruses Worms Rootkits Bootkits Keyloggers Screen scrapers Exploits Backdoors Logic bombs Payloads Denial of service Defenses Computer access control Application security Antivirus software Secure coding Secure by default Secure by design Secure operating systems Authentication Multi-factor authentication Authorization Data-centric security Encryption Firewall Intrusion detection system Mobile secure gateway Runtime application self-protection (RASP) v t e Information security , sometimes shortened to InfoSec , is the practice of preventing unauthorized access, use, disclosure, disruption, modification, inspection, recording or destruction of information. Th...
Read more

Volkswagen Group MQB platform

Image
The Volkswagen Group MQB platform is the company's strategy for shared modular design construction of its transverse, front-engine, front-wheel-drive layout (optional front-engine, four-wheel-drive layout) automobiles. Volkswagen spent roughly $60bn [1] developing this new platform and the cars employing it. The platform underpins a wide range of cars from the supermini class to the mid size SUV class. MQB allows Volkswagen to assemble any of its cars based on this platform across all of its MQB ready factories. This allows the Volkswagen group flexibility to shift production as needed between its different factories. Beginning in 2012, Volkswagen Group marketed the strategy under the code name MQB , which stands for Modularer Querbaukasten , translating from German to "Modular Transversal Toolkit" or "Modular Transverse Matrix". [2] [3] MQB is one strategy within VW's overall MB (Modularer Baukasten or modular matrix) program which also includes th...
Read more

刘萌萌

Image
body.skin-minerva .mw-parser-output table.infobox caption{text-align:center} 刘萌萌 女演员 罗马拼音 Liu Meng Meng 英文名 Cya 国籍   中国 民族 汉族 出生 ( 1989-10-16 ) 1989年10月16日 （ 29歲）   中国辽宁省大连市 职业 演员、艺人 语言 汉语 教育程度 沈阳音乐学院 北京电影学院表演系进修班 活跃年代 2011年至今 唱片公司 浙江永乐影视制作有限公司 经纪公司 浙江永乐影视制作有限公司 网站 刘萌萌 官方微博 刘萌萌 （1989年10月16日 － ），汉族，中国演员，2010年参加湖南卫视《芒果训练营》而出道至今，凭借电视剧《爱情公寓》“诺澜”一角走红。北京电影学院10级表演系（进修班）毕业。 目录 1 主要经历 2 影视作品 2.1 电视剧 2.2 电影 2.3 综艺节目 3 参考文献 4 外部链接 主要经历 1989年，出生于辽宁省大连市一个工人家庭； 2006年，考入沈阳音乐学院舞蹈系本科班学习； 2010年，参加湖南卫视《芒果训练营》演艺新秀比赛而出道 [1] ；進入北京电影学院表演系进修班 2011年，出演电视剧《隋唐演义》“琼花公主”一角色； 2012年，担任电视剧《爱情公寓》“诺澜”一角并开始走红 [2] ； 2013年，担任电视剧《利箭纵横》《利剑行动》 [3] 女主角“林筱雨” 2014年，参加江苏卫视真人秀栏目《花样年华》 [4] 备受瞩目 [5] 。 影视作品 电视剧 首播年份 剧名 角色 备注 2012 《爱情公寓3》 诺澜 2012 《利箭行动》 林筱雨 2013 《隋唐演义》 琼花公主 2013 《决战燕子门》 马晓婉 2014 《利箭纵横》 林筱雨 2014 《屌丝日记》 林洛霏 網絡劇 2014 《爱情公寓4》 诺澜 ...
Read more