Editing Intel High Definition Audio (section)

==Host controller==
Like AC'97, HD Audio acts as a device driver, defining the [[Software architecture|architecture]], [[Data link layer|link frame format]], and [[API|programming interface]]s used in the hardware of the [[Host adapter|host controller]] of the [[Conventional PCI|PCI bus]] and linking it to a codec used by a computer's software.<ref name="AMD">{{cite web|url=https://www.amd.com/us-en/Processors/ProductInformation/0,,30_118_14603_14620,00.html|title=AMD SB600 Product Information Page|work=[[Advanced Micro Devices]]|access-date=September 19, 2022}}</ref> Configurations of the host controller (Chipset) are available from third-party suppliers, including [[Nvidia]], [[VIA Technologies|VIA]] and [[Advanced Micro Devices|AMD]],<ref name="AMD"/> while codecs have also been provided by third-party suppliers including [[Realtek]], [[Conexant]], [[Integrated Device Technology|IDT]], [[VIA Technologies|VIA]], [[SigmaTel]], [[Analog Devices]], [[C-Media]] and [[Cirrus Logic]].<ref>{{cite web|url=http://www.realtek.com.tw/products/productsView.aspx?Langid=1&PFid=28&Level=5&Conn=4&ProdID=135|title=ALC888 {{!}} 7.1+2 Channel High Definition Audio Codec|publisher=[[Realtek]]|access-date=September 22, 2022|archive-url=https://web.archive.org/web/20070425212211/http://www.realtek.com.tw/products/productsView.aspx?Langid=1&PFid=28&Level=5&Conn=4&ProdID=135|archive-date=April 25, 2007|url-status=dead}}</ref><ref>{{cite web|url=http://www.conexant.com/Product/Audio/pchdaudio/Pages/default.aspx|title=Conexant - PC HD-Audio|publisher=[[Conexant]]|access-date=September 22, 2022|archive-url=https://web.archive.org/web/20130819015410/http://www.conexant.com/Product/Audio/pchdaudio/Pages/default.aspx|archive-date=August 19, 2013|url-status=dead}}</ref> AMD's [[TRX40]] chipset was introduced in 2019 for use with [[Ryzen]] "Threadripper" [[Central processing unit|CPU]]s, which provided no HD Audio interface. As a result, a separate USB audio interface converter, USB codec, or [[PCIe]] audio device was required to integrate audio on TRX40 motherboards. This was a temporary measure until a new Audio bus was developed by AMD named Audio CoProcessor (ACPBus).<ref>{{cite web|last=Bonshor|first=Gavin|url=https://www.anandtech.com/show/15121/the-amd-trx40-motherboard-overview-|archive-url=https://web.archive.org/web/20191129022003/https://www.anandtech.com/show/15121/the-amd-trx40-motherboard-overview-|url-status=dead|archive-date=November 29, 2019|title=The AMD TRX40 Motherboard Overview: 12 New Motherboards Analyzed|work=[[AnandTech]]|date=November 28, 2019|access-date=September 22, 2022}}</ref> Intel has also decoupled the audio controller from its chipsets in favor of Intel Smart Sound Technology (SST) or [[I²S]] instead of the more traditional HD Audio Bus. A HD Audio controller can include vendor-offered audio enhancement features known as Audio Processing Objects (APOs), offered by companies like [[Dolby]], [[Creative Technology|Creative]], [[Fortemedia]], [[SteelSeries|Nahimic]], [[Digital Theater Systems|DTS]] and [[Waves Audio]], they can be software-based and driver-based.