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KMixer is the Kernel Audio Mixer driver, a part of WDM Audio in Windows 98 to Windows XP which handles the mixing of multiple sound buffers into an output. The tasks performed by KMixer.sys: Mixing multiple PCM audio streams; Format, bit-depth (also known as word-length) and sample-rate conversion; Speaker configuration and channel mapping
The latest version of XAudio2 is 2.9, released for Windows 10. [ 2 ] XAudio2 versions have shipped for use on Xbox 360 and versions of Windows, and for as old as Windows XP using redistributable DLLs, with newer versions adding features only compatible with newer operating systems. [ 7 ]
Windows XP Service Pack 3 also includes the updated driver, as well as Windows XP Professional x64 Edition with Service Pack 1 and 2. In Windows Vista , the Windows Logo program requirements state that any machine shipped with Vista must include a UAA-compliant audio device that works without additional drivers.
DirectSound is a deprecated software component of the Microsoft DirectX library for the Windows operating system, superseded by XAudio2.It provides a low-latency interface to sound card drivers written for Windows 95 through Windows XP and can handle the mixing and recording of multiple audio streams.
The first, Windows XP 64-Bit Edition, was intended for IA-64 systems; as IA-64 usage declined on workstations in favor of AMD's x86-64 architecture, the Itanium edition was discontinued in January 2005. [57] A new 64-bit edition supporting the x86-64 architecture, called Windows XP Professional x64 Edition, was released in April 2005. [58]
VDMSound allows the user to provide custom mappings for MIDI instruments as well as for joystick buttons and axes. MIDI mappings are particularly useful when the type of MIDI device supported by a game (e.g. MT-32) is different from the type of hardware or software device actually present on the system (e.g. Microsoft GS Wavetable SW Synth.) [7]
The Service Pack 3 update to Windows XP and all later versions of Windows (from Vista onwards) included the Universal Audio Architecture (UAA) class driver, which supported audio devices built to HD Audio's specifications. Retrospective UAA drivers were also built for Windows 2000, Server 2003 and XP Service Pack 1/2.
Previously, the WDK was known as the Driver Development Kit (DDK) [4] and supported Windows Driver Model (WDM) development. It got its current name when Microsoft released Windows Vista and added the following previously separated tools to the kit: Installable File System Kit (IFS Kit), Driver Test Manager (DTM), though DTM was later renamed and removed from WDK again.