Editing Sony (section)

===Audio encoding===
In 1993, Sony challenged the industry standard [[Dolby Digital]] 5.1 surround sound format with a newer and more advanced proprietary motion picture digital audio format called [[Sony Dynamic Digital Sound|SDDS]] (Sony Dynamic Digital Sound).<ref name=":3">{{cite web |title=Sony Digital Dynamic Sound |url=https://www.cs.cmu.edu/~clamen/misc/movies/sdds-post.html |access-date=1 February 2019 |website=www.cs.cmu.edu |archive-date=2016-08-07  |archive-url=https://web.archive.org/web/20160807121703/https://www.cs.cmu.edu/~clamen/misc/movies/sdds-post.html |url-status=live }}</ref> This format employed eight channels (7.1) of audio opposed to just six used in Dolby Digital 5.1 at the time.<ref name=":3" /> Ultimately, SDDS has been vastly overshadowed by the preferred DTS ([[DTS (sound system)|Digital Theatre System]]) and Dolby Digital standards in the motion picture industry. SDDS was solely developed for use in the theatre circuit; Sony never intended to develop a home theatre version of SDDS.<ref>{{cite book |last=Ma'arif |first=Nelly Nailaite |title=The Power of Marketing: Practitioner Perspectives in Asia |date=2008 |publisher=Penerbit Salemba Empat |isbn=9789796914456 |oclc=968144111}}</ref><ref>{{cite web |title=Why isn't SDDS in the consumer market? |url=https://www.hometheaterforum.com/community/threads/why-isnt-sdds-in-the-consumer-market.183176/ |access-date=1 February 2019 |website=Blu-ray Movie Discussion, Expert Reviews & News |date=5 July 2004 |language=en-US |archive-date=2020-11-24  |archive-url=https://web.archive.org/web/20201124043456/https://www.hometheaterforum.com/community/threads/why-isnt-sdds-in-the-consumer-market.183176/ |url-status=live }}</ref>

Sony and [[Philips]] jointly developed the Sony-Philips digital interface format ([[S/PDIF]]) and the high-fidelity audio system [[Super Audio CD|SACD]]. The latter became entrenched in a format war with [[DVD-Audio]]. Still, neither gained a major foothold with the general public. CDs had been preferred by consumers because of the ubiquitous presence of CD drives in consumer devices until the early 2000s when the iPod and streaming services became available.<ref>{{cite web |last=Waniata |first=Ryan |date=7 February 2018 |title=The Life and Times of the Late, Great CD |url=https://www.digitaltrends.com/features/the-history-of-the-cds-rise-and-fall/ |access-date=1 February 2019 |website=digitaltrends.com |archive-date=2021-01-12  |archive-url=https://web.archive.org/web/20210112023950/https://www.digitaltrends.com/features/the-history-of-the-cds-rise-and-fall/ |url-status=live }}</ref>

In 2015, Sony introduced [[LDAC (codec)|LDAC]], a [[Proprietary software|proprietary]] [[Audio codec|audio coding]] technology which allows streaming [[high-resolution audio]] over [[Bluetooth]] connections at up to 990&nbsp;kbit/s at 32 bit/96&nbsp;kHz. Sony also contributed it as part of the [[Android Open Source Project]] starting from [[Android 8.0]] "[[Android version history#Android 8.0 Oreo (API 26)|Oreo]]", enabling every OEM to integrate this standard into their own Android devices freely. However the ''decoder'' library is [[Proprietary software|proprietary]], so receiving devices require licenses. On 17 September 2019, the [[Japan Audio Society|Japan Audio Society (JAS)]] certified LDAC with their [[Japan Audio Society#Hi-Res Audio Wireless Certification|Hi-Res Audio Wireless]] certification. Currently the only codecs with the Hi-Res Audio Wireless certification are LDAC and [[LHDC (codec)|LHDC]], another competing standard.