LHDC (codec)

LHDC (codec)
Developed bySavitech
Type of formatAudio codec
Websitewww.lhdc.co

Low Latency High-Definition Audio Codec (LHDC) is an audio codec technology developed by Savitech. LHDC allows high-resolution audio streaming over Bluetooth. It is a high-quality Bluetooth codec based on the A2DP Bluetooth protocol and allows a bit-rate of up to 900 kbit/s compared to SBC's bit rate of 345 kbit/s .[1]

LHDC is an alternative to Bluetooth SIG's SBC and LC3 codecs. Its main competitors are Qualcomm's aptX-HD/aptX Adaptive, Huawei 's L2HC and Sony's LDAC codec.

Starting from Android 10, enumeration constant symbols for LHDC and LLAC are part of the Android Open Source Project, enabling every OEM to integrate this standard into their own Android devices freely.[2][3] Older versions of Android require LHDC/LLAC enumeration constant symbols to be implemented by the smartphone manufacturers or Android app. Android apps with this type of LHDC support include Savitech's Hi-Res BT Player, FiiO Music, HIFIMAN Music and DA&T Audio.

LHDC

LHDC supports bitrates of 400/560/900 kbit/s, bit-depth of up to 24 bit and sample rate of up to 96 kHz.[1]

The first Smartphone to support LHDC was the Huawei Mate 10.[4]

On 17 September 2019, the Japan Audio Society (JAS) certified LHDC with their Hi-Res Audio Wireless certification.[5] As of June 2024, the codecs certified by the JAS to bear the Hi-Res Audio Wireless logo are LHDC, LDAC, SCL6, LC3plus, SHDC, and aptX Adaptive.[6]

LLAC

Low Latency Audio Codec (LLAC) is also called LHDC LL. It is based on the high definition wireless audio technology from LHDC, but designed for low latency and features an auto-detect gaming mode. Savitech claims LLAC has end-to-end latency of around ~30ms. LLAC supports bitrates of 400/600 kbit/s, bit-depth of up to 24 bit and sample rate of up to 48 kHz. LLAC has no hardware requirement for the transmitter.[7]

The first Smartphone to support LLAC was the Huawei P30.[8]

Hi-Res Wireless Audio (HWA) Union

On 2 September 2018 the Hi-Res Wireless Audio (HWA) Union was formed to promote LHDC adoption.[9] Also known as the HWA Alliance. The HWA Union Board of Directors includes:

Other HWA Union members include:

HWA Certification

On March 27, 2018, Huawei and Savitech announced the Hi-Res Wireless Audio (HWA) Certification. Platinum HWA Certification requires frequency response over 40 kHz, THD+N<-90 dB, SNR>110 dB, and playback using the at least 24bit/96 kHz. Gold HWA Certification requires frequency response over 20 kHz, THD+N<-80 dB, SNR>100 dB, and playback using the at least 24bit/48 kHz.[10]

See also

References

  1. ^ a b "What is LHDC". LHDC. Archived from the original on 2019-09-22. Retrieved 2019-09-22.
  2. ^ Yeow, Goh Beng (2019-10-22). "Android 10 devices are going to sound better with LHDC". Porta-Fi. Retrieved 2019-12-22.
  3. ^ "Audio Implementation". Android Open Source Project. Retrieved 2019-12-22.
  4. ^ "Product Finder Mobile". hwa-audio. Retrieved 2019-09-22.
  5. ^ Yeow, Goh Beng (2019-09-17). "Japan Audio Society certifies LHDC for "Hi-Res Audio Wireless" certification". Porta-Fi. Retrieved 2019-09-22.
  6. ^ "Definition of Hi-Res Audio (Announced on June 12th 2014)". Japan Audio Society. 2024-06-12. Retrieved 2024-06-26.
  7. ^ "What is LLAC". LHDC. Retrieved 2019-09-22.
  8. ^ "HWA". hwa-audio. Retrieved 2019-09-22.
  9. ^ Yeow, Goh Beng (2018-09-01). "Hi-Res Wireless Audio (HWA) Union established". Porta-Fi. Retrieved 2019-09-22.
  10. ^ "HWA Certification Grading". hwa-audio. Retrieved 2019-09-22.

Read other articles:

Fu Kun-chi

Ini adalah nama Tionghoa; marganya adalah Fu. Fu Kun-chi傅崐萁 Anggota Yuan LegislatifPetahanaMulai menjabat 1 Februari 2020 PendahuluHsiao Bi-khimPenggantiPetahanaMasa jabatan1 Februari 2002 – 20 Desember 2009 PenggantiWang Ting-sonDaerah pemilihanKabupaten HualienMagistrat Kabupaten HualienMasa jabatan20 Desember 2009 – 12 September 2018WakilTsai Yun-huang PendahuluHsieh Shen-shanPenggantiTsai Pi-chung (pelaksana tugas)Hsu Chen-wei Informasi pribadiLahir8 Mei 19...

 

 

The Best of Natacha Atlas

2005 greatest hits album by Natacha AtlasThe Best of Natacha AtlasGreatest hits album by Natacha AtlasReleased23 May 2005GenreRock, World musicLabelMantra (MNTCD #1036)Natacha Atlas chronology Something Dangerous(2003) The Best of Natacha Atlas(2005) Mish Maoul(2006) Professional ratingsReview scoresSourceRatingAllmusic[1]Exclaim!(positive)[2] The Best of Natacha Atlas is a compilation album by Belgian singer Natacha Atlas. It was released by Mantra Recordings on 23 Ma...

 

 

Copa Constitució 2007-2008

Copa Constitució 2007-2008 Competizione Copa Constitució Sport Calcio Edizione 16ª Organizzatore FAF Date dal 17 gennaio 2008al 24 maggio 2008 Luogo  Andorra Risultati Vincitore UE Sant Julià(1º titolo) Secondo FC Lusitanos Cronologia della competizione 2006-2007 2008-2009 Manuale La Copa Constitució 2000-2001 è stata la 16ª edizione della Coppa di Andorra di calcio, disputato tra il 17 gennaio ed il 24 maggio 2008. Il UE Sant Julià ha vinto il trofeo per la prima volta...

Responsive web design

Responsive design redirects here. For the computer-aided design approach, see Responsive computer-aided design. Not to be confused with Responsiveness. Approach to web design for making web pages render well on a variety of devices A screenshot of Wikipedia with the responsive skin Vector 2022, on a computer screen (left) and on a mobile phone screen (right). The elements rearrange themselves into a more mobile friendly layout. Content is like water, a saying that illustrates the principles o...

 

 

Несторианство

ХристианствоБиблия Ветхий Завет Новый Завет Евангелие Десять заповедей Нагорная проповедь Апокрифы Бог, Троица Бог Отец Иисус Христос Святой Дух История христианства Апостолы Хронология христианства Раннее христианство Гностическое христианство Вселенские соборы Н...

 

 

西維吉尼亞州

西維珍尼亞 美國联邦州State of West Virginia 州旗州徽綽號：豪华之州地图中高亮部分为西維珍尼亞坐标：37°10'N－40°40'N, 77°40'W－82°40'W国家 美國加入聯邦1863年6月20日（第35个加入联邦）首府（最大城市）查爾斯頓政府 • 州长（英语：List of Governors of {{{Name}}}]]） • 副州长（英语：List of lieutenant governors of {{{Name}}}]]）吉姆·賈斯蒂斯（R）米奇·卡邁克爾（...

Маки (Испания)

У этого термина существуют и другие значения, см. Маки. В статье есть список источников, но не хватает сносок. Без сносок сложно определить, из какого источника взято каждое отдельное утверждение. Вы можете улучшить статью, проставив сноски на источники, подтверждающие ин...

 

 

Valiha

Stringed musical instrument For the plant genus, see Valiha (plant). A valiha player in Ambohimahasoa, central Madagascar Lullaby played on valiha Valiha orchestra at the Paris World Exposition of 1931. Valiha with larger diameter bamboo tube. The valiha is a tube zither from Madagascar made from a species of local bamboo; it is considered the national instrument of Madagascar.[1] The term is also used to describe a number of related zithers of differing shapes and materials.[2 ...

 

 

Henri de Miffonis

French civil engineer that designed lighthouses in Canada Henri de MiffonisPhoto of Henri de Miffonis in 1908Born(1882-05-24)24 May 1882Boulogne-Billancourt, FranceDied1955CanadaCitizenshipCanadaAlma materUniversité de ParisOccupationCivil EngineerKnown forPlans and drawings for the Commission of Lighthouses Henri de Miffonis (May 24, 1882 - 1955), born as Louis Fernand Henri de Miffonis, was a civil engineer. He was born in Boulogne-Billancourt, France[1][2] and di...

Outline of Oregon territorial evolution

Overview of and topical guide to Oregon territorial evolution Legend for maps   U.S. state   U.S. territory   Claimed by other countries   Disputed An enlargeable map of the United States after the Treaty of Paris in 1789 The following outline traces the territorial evolution of the U.S. state of Oregon. Outline An enlargeable map of the United States after the Anglo-American Convention of 1818 An enlargeable map of the United States after the Adams-On�...

 

 

Deborah Meaden

British businesswoman (born 1959) Deborah MeadenMeaden after a BBC's Dragons' Den appearance, 2011BornDeborah Sonia Charles (1959-02-11) 11 February 1959 (age 65)Taunton, Somerset, EnglandNationalityBritishEducationTrowbridge High SchoolAlma materBrighton Technical CollegeOccupationBusinesswomanKnown forDragons' DenStrictly Come DancingSpouse Paul Farmer ​(m. 1993)​Websitedeborahmeaden.com Deborah Sonia Meaden (born 11 February 1959)[1][...

 

 

博姆德斯帕科

博姆德斯帕科Bom Despacho市镇博姆德斯帕科在巴西的位置坐标：19°44′09″S 45°15′07″W / 19.7358°S 45.2519°W / -19.7358; -45.2519国家巴西州米纳斯吉拉斯州面积 • 总计1,209.139 平方公里（466.851 平方英里）海拔768 公尺（2,520 英尺）人口 • 總計42,260人 • 密度35人/平方公里（90.5人/平方英里） 博姆德斯帕科（葡萄牙语：Bom Despacho�...

Кохан, Григорий Романович

В Википедии есть статьи о других людях с фамилией Кохан. Григорий Коханукр. Григорій Кохан Имя при рождении Григорий Романович Кохан Дата рождения 23 июня 1931(1931-06-23) Место рождения с. Бортков, Тарнопольское воеводство, Польская Республика (ныне Золочевский район, Льво...

 

 

Sukhoi Su-25

Soviet attack aircraft Su-25 A Russian Air Force Su-25 Role Close air supportType of aircraft National origin Soviet Union / Russia / Georgia Design group Sukhoi Built by TAM Management Tbilisi Aircraft Manufacturing Ulan-Ude Aviation Plant First flight 22 February 1975; 49 years ago (1975-02-22) Introduction 19 July 1981 Status In service Primary users Russian Aerospace ForcesUkrainian Air ForceKorean People's Army Air Force Peruvian Air Force See Operators for others ...

 

 

Poder Judicial de Chile

Palacio de los Tribunales de Justicia de Santiago, sede de la Corte Suprema de Justicia, Corte de Apelaciones de Santiago y Corte Marcial del Ejército, Fuerza Aérea y CarabinerosEl Poder Judicial de la República de Chile está constituido por los tribunales nacionales, autónomos e independientes, establecidos por la ley, a los cuales les corresponde la función jurisdiccional, es decir, el conocimiento y resolución de conflictos de relevancia jurídica, cualquiera que sea su naturaleza o...

Cleria Cesarini

Cleria Cesarini (22 maggio 1655 – 12 settembre 1735) è stata una nobildonna italiana. Stemma di Casa Cesarini Biografia Era figlia di Giuliano Cesarini e di Margherita Savelli.[1] Penultima delle sue sorelle, avrebbe dovuto essere erede di Casa Cesarini.[1] Filippo, ultimo membro maschio della famiglia, fece sposare Cleria nel 1571 a Filippo Colonna signore di Sonnino e Galatro, figlio di Marcantonio V Colonna, contravvenendo le disposizione dei suoi avi che la volevano spo...

 

 

マルクス・クラウディウス・マルケッルス (紀元前166年の執政官)

マルクス・クラウディウス・マルケッルスM. Claudius M. f. M. n. Marcellus コルドバにあるマルケッルスの立像。出生 紀元前209年頃死没 紀元前148年出身階級 プレブス氏族 クラウディウス氏族官職 護民官（紀元前171年）法務官（紀元前169年）執政官（紀元前171年、紀元前155年、紀元前152年）指揮した戦争 ヒスパニア征服戦争対リグリア戦争第二次ケルティベリア戦争テンプレ�...

 

 

Équipe d'Argentine de football à la Copa América 1941

Équipe d'Argentine de football à la Copa América 1941 Fédération CONMEBOL Organisateur(s) Chili Participation 15 Sélectionneur Guillermo Stábile Meilleur buteur Juan Marvezzi (5) Équipe d'Argentine de football Équipe d'Argentine de football à la Copa América 1937 Équipe d'Argentine de football à la Copa América 1942 modifier  L'équipe d'Argentine de football participe à sa 15e Copa América lors de l'édition 1941 qui a eu lieu à Santiago au Chili du 2 février au 4 mar...

Первый канал «Евразия»

У этого термина существуют и другие значения, см. Первый канал (значения) и Евразия. Первый канал «Евразия» Страна  Казахстан Зона вещания  Казахстан Кыргызстан Узбекистан Туркменистан Таджикистан Время вещания круглосуточно Язык вещания казахскийрусский ...

 

 

Hadrian's Wall

Defensive fortification in Roman Britain Hadrian's WallThe location of Hadrian's Wall in what is now northern England, and the later Antonine Wall in what is now the Central Belt of ScotlandLocationNorthern EnglandCoordinates55°01′N 2°17′W / 55.017°N 2.283°W / 55.017; -2.283Length73 miles (117 km)BuiltBegun 122 ADBuilt forHadrianVisitors100,000+ annuallyGoverning bodyHistoric EnglandOwnerVarious private and public ownerships UNESCO World Heritage SiteDesig...