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HD Audio Bus Driver - Windows drivers | Microsoft Docs
https://docs.microsoft.com/en-us/windows-hardware/drivers/audio/hd-audio-bus-driver
An interface for programming a DSP or additional registers that are not defined in the Intel High Definition Audio Specification. Prioritized bandwidth management. During device enumeration, the HD Audio bus driver detects the codecs that are attached to the HD Audio controller's HD Audio Link.
No audio output device is installed / High definition ...
https://answers.microsoft.com/en-us/windows/forum/all/no-audio-output-device-is-installed-high/824a603c-7754-4ddc-86b8-6c3d53f41f11
The "High Definition Audio Controller" has a yellow warning icon on it, so I guess thats where the problem is. The troubleshooter finds a problem every time I run it, it says "Restart your PC to finish installing drivers and updates" then i click in "apply this fix'" and it doesn't reboot automatically (idk if it should) when i rebooted ...
Customizing HD Audio Driver Volume Settings - Windows ...
https://docs.microsoft.com/en-us/windows-hardware/drivers/audio/customizing-default-audio-volume-settings
If there is no value in the registry, the HD Audio class driver retrieves a default value from the sub-device graph implementation. Starting with Windows Vista, the default values are as follows: Endpoint volume defaults to max minus 6 dB for all device types. Microphone boost defaults to 0 dB.
Hdaudio.h header - Windows drivers | Microsoft Docs
https://docs.microsoft.com/en-us/windows-hardware/drivers/ddi/hdaudio/
The HDAudioBdlIsr routine is the ISR that the HD Audio bus driver calls each time an IOC interrupt occurs on the stream. It is a function pointer of type PHDAUDIO_BDL_ISR, which is defined as follows. PHDAUDIO_DMA_NOTIFICATION_CALLBACK HDAudio codec DMA Notification Callback function. PHDAUDIO_TRANSFER_COMPLETE_CALLBACK
Where is the registry key for the default audio device in ...
https://social.technet.microsoft.com/Forums/lync/en-US/4702b210-1a60-4e0d-996a-f292a954ebf0/where-is-the-registry-key-for-the-default-audio-device-in-windows-7
Win 7 only allows playback out of one device (ie front or back audio jack) at a time. If you have something plugged in to both at the same time, it will only play out of the one that is set to be the default audio device. This can be changed in the 'Manage Audio Devices' window by selecting the ... · HKEY_CURRENT_USER\Software\Microsoft\Multimedia ...
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