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LHDC (codec)
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<h2 id="lhdc">LHDC</h2> <p>LHDC supports bitrates of 400/560/900 kbit/s, bit-depth of up to 24 bit and <a href="/facts/Sample_rate/xxck7aLN">sample rate</a> of up to 96 kHz.<a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a> </p><p>The first <a href="/facts/Smartphone/cSIrBMWG">Smartphone</a> to support LHDC was the <a href="/facts/Huawei_Mate_10/qBb9IUaS">Huawei Mate 10</a>.<a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a> </p><p>On 17 September 2019, the Japan Audio Society (JAS) certified LHDC with their Hi-Res Audio Wireless certification.<a class="footnote-ref" id="fnref:6" href="#fn:6"><sup>6</sup></a> As of June 2024, the codecs certified by the JAS to bear the Hi-Res Audio Wireless logo are LHDC, <a href="/facts/LDAC_(codec)/IMFHz8ux">LDAC</a>, <a href="/facts/SCL6/alxKG7Se">SCL6</a>, <a href="/facts/LC3_(codec)/ak7qbl9N">LC3plus</a>, SHDC, and <a href="/facts/AptX_Adaptive/cSevMczh">aptX Adaptive</a>.<a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a> </p> <h2 id="llac">LLAC</h2> <p>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 <a href="/facts/Sample_rate/xxck7aLN">sample rate</a> of up to 48 kHz. LLAC has no hardware requirement for the transmitter.<a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a> </p><p>The first <a href="/facts/Smartphone/cSIrBMWG">Smartphone</a> to support LLAC was the <a href="/facts/Huawei_P30/bBHJXEzo">Huawei P30</a>.<a class="footnote-ref" id="fnref:9" href="#fn:9"><sup>9</sup></a> </p> <h2 id="hi-res-wireless-audio-hwa-union">Hi-Res Wireless Audio (HWA) Union</h2> <p>On 2 September 2018 the Hi-Res Wireless Audio (HWA) Union was formed to promote LHDC adoption.<a class="footnote-ref" id="fnref:10" href="#fn:10"><sup>10</sup></a> Also known as the HWA Alliance. The HWA Union Board of Directors includes: </p> <ul><li><a href="/facts/AKM_Semiconductor%2c_Inc./LpQQpT0Q">AKM</a></li> <li>China Electronics Technology Group Corporation</li> <li><a href="/facts/Cirrus_Logic/yjRGFyp0">Cirrus Logic</a></li> <li><a href="/facts/Edifier/VuoY4Ng5">Edifier</a></li> <li>Guoguang Electric</li> <li><a href="/facts/HiFiMAN_Electronics/d0qfEVX4">HiFiMAN</a></li> <li>HiVi</li> <li><a href="/facts/Huawei/Qwu0tbnL">Huawei</a></li> <li>Institute of Acoustics of the Chinese Academy of Sciences</li> <li>Savitech</li> <li>iriver</li> <li><a href="/facts/Sennheiser/vr3dn6VC">Sennheiser</a></li> <li>Taihe Music Group</li></ul> <p>Other HWA Union members include: </p> <ul><li><a href="/facts/Ams_AG/7SzJVCrU">ams AG</a></li> <li><a href="/facts/Astell_%2526_Kern/2sd2FW9n">Astell & Kern</a></li> <li><a href="/facts/Audio-Technica/AW8ru07V">Audio-Technica</a></li> <li>Aukey</li> <li>Cayin</li> <li>Cozoy</li> <li>Coolhere</li> <li>Colorfly</li> <li>DA&T</li> <li>DA-ART</li> <li>DUNU</li> <li><a href="/facts/FiiO_Electronics_Technology/PqYJtHRn">FiiO</a></li> <li><a href="/facts/Fostex/3lIXIxbS">Fostex</a></li> <li>Haylou</li> <li>HiBy</li> <li>infly</li> <li>iEAST</li> <li>Liesheng</li> <li>Musiland</li> <li>NFJ FX-AUDIO</li> <li>OC Studio</li> <li><a href="/facts/Onkyo/yKu9vm8D">Onkyo</a></li> <li><a href="/facts/Pioneer_Corporation/wf4lT8IS">Pioneer</a></li> <li>ProStereo</li> <li>QCY</li> <li>Questyle Audio</li> <li>Quloos (QLS HiFi)</li> <li>Radius</li> <li>Shanling</li> <li>S.M.S.L</li> <li><a href="/facts/TASCAM/kmC0yppV">TASCAM</a></li> <li><a href="/facts/TEAC_Corporation/BH0YfqaR">TEAC</a></li> <li>TempoTec</li> <li><a href="/facts/Tecsun/CekjnkaT">Tecsun</a></li> <li>TiinLab</li> <li>Topping</li> <li>Tube Fan Audio</li> <li>VMN</li> <li>xDuoo</li> <li>YULONG Audio</li> <li>1MORE</li></ul> <h2 id="hwa-certification">HWA Certification</h2> <p>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 of 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.<a class="footnote-ref" id="fnref:11" href="#fn:11"><sup>11</sup></a> </p> <h2 id="see-also">See also</h2> <ul><li><a href="/facts/List_of_codecs/e5nTCc5X">List of codecs</a></li> <li><a href="/facts/Lossy_data_compression/jHW7DDv3">Lossy data compression</a></li></ul> <h2 id="external-links">External links</h2> <ul><li><a href="https://www.lhdc.co">Official website</a> </li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>"What is LHDC". LHDC. Archived from the original on 2019-09-22. Retrieved 2019-09-22. <a href="https://web.archive.org/web/20190922041540/https://www.lhdc-audio.org/how-it-works" target="_blank">https://web.archive.org/web/20190922041540/https://www.lhdc-audio.org/how-it-works</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Yeow, Goh Beng (2019-10-22). "Android 10 devices are going to sound better with LHDC". Porta-Fi. Retrieved 2019-12-22. <a href="https://porta-fi.com/android-10-devices-are-going-to-sound-better-with-lhdc/" target="_blank">https://porta-fi.com/android-10-devices-are-going-to-sound-better-with-lhdc/</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>"Audio Implementation". Android Open Source Project. Retrieved 2019-12-22. <a href="https://source.android.com/devices/audio/implement" target="_blank">https://source.android.com/devices/audio/implement</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>"What is LHDC". LHDC. Archived from the original on 2019-09-22. Retrieved 2019-09-22. <a href="https://web.archive.org/web/20190922041540/https://www.lhdc-audio.org/how-it-works" target="_blank">https://web.archive.org/web/20190922041540/https://www.lhdc-audio.org/how-it-works</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>"Product Finder Mobile". hwa-audio. Retrieved 2019-09-22. <a href="https://www.hwa-lhdc.org/mobile" target="_blank">https://www.hwa-lhdc.org/mobile</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>Yeow, Goh Beng (2019-09-17). "Japan Audio Society certifies LHDC for "Hi-Res Audio Wireless" certification". Porta-Fi. Retrieved 2019-09-22. <a href="https://porta-fi.com/japan-audio-society-certifies-lhdc/" target="_blank">https://porta-fi.com/japan-audio-society-certifies-lhdc/</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> <li id="fn:7"><p>"Definition of Hi-Res Audio (Announced on June 12th 2014)". Japan Audio Society. 2024-06-12. Retrieved 2024-06-26. <a href="https://www.jas-audio.or.jp/english/hi-res-logo-en" target="_blank">https://www.jas-audio.or.jp/english/hi-res-logo-en</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li> <li id="fn:8"><p>"What is LLAC". LHDC. Retrieved 2019-09-22. <a href="https://www.lhdc-audio.org/copy-of-what-is-lhdc" target="_blank">https://www.lhdc-audio.org/copy-of-what-is-lhdc</a> <a href="#fnref:8" class="footnote-back-ref">↩</a></p></li> <li id="fn:9"><p>"HWA". hwa-audio. Retrieved 2019-09-22. <a href="https://www.hwa-lhdc.org/" target="_blank">https://www.hwa-lhdc.org/</a> <a href="#fnref:9" class="footnote-back-ref">↩</a></p></li> <li id="fn:10"><p>Yeow, Goh Beng (2018-09-01). "Hi-Res Wireless Audio (HWA) Union established". Porta-Fi. Retrieved 2019-09-22. <a href="https://porta-fi.com/hi-res-wireless-audio-hwa-union-officially-established/" target="_blank">https://porta-fi.com/hi-res-wireless-audio-hwa-union-officially-established/</a> <a href="#fnref:10" class="footnote-back-ref">↩</a></p></li> <li id="fn:11"><p>"HWA Certification Grading". hwa-audio. Retrieved 2019-09-22. <a href="https://www.hwa-lhdc.org/copy-of-how-it-works" target="_blank">https://www.hwa-lhdc.org/copy-of-how-it-works</a> <a href="#fnref:11" class="footnote-back-ref">↩</a></p></li> </ol>