It is possible that some output devices are not compatible with the APO driver. During this time, some playback issues can be noticed. IMPORTANT! When first selecting this driver type, it can take up to 25 seconds to initialize on each device you select. This ensures lower audio playback latency. Unlike the Virtual Device audio driver described above, the SoundID Reference calibration is applied directly on the designated output device. This driver is available for your WASAPI output devices. Setting up Virtual Windows audio driver (WASAPI) in the SoundID Reference app SoundID Reference app will forward the calibrated audio to the device you have selected in the app:ĭefault driver mode for WASAPI audio devicesĪ stable driver type for systemwide calibration This is necessary in order for all computer audio to be captured for calibration. If you set up your output device to work with this driver type, you will see SoundID Reference Virtual Audio Device as the output device for your computer. Virtual Windows audio driver is a virtual device that must be selected as the system's output device to provide systemwide calibration. You can see the list of available output device drivers by clicking Add new output in the SoundID Reference app: In other words, whichever driver type your audio interface supports (or prefers, for better performance), one of the driver options listed above should work for you. Some audio interfaces are ASIO-exclusive, which we have also taken into consideration. Most audio interfaces have both WASAPI and ASIO drivers running in parallel, although some interfaces are limited to a single driver running at a time. Most built-in audio devices (like headphone ports on laptops) employ WASAPI drivers by default. SoundID Reference supports both WASAPI and ASIO output devices, giving 2 driver type options for each kind.

SoundID Reference app has 4 distinct driver types for various audio setups: In the case of the SoundID Reference app, the audio drivers calibrate the outgoing audio and send it to the audio driver of the designated hardware device:

Generally, they are the software components that process the output audio signal and pass it to the audio playback hardware. This article explains the various drivers available for SoundID Reference app users on Windows.

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