Native redirection is the default Audio redirection method for both protocols: UXP and RDP.
The names of Playback and Recording devices, which will appear in the terminal session, depend on the terminal server type and protocol used.
Terminal session protocol
Playback device name
Recording device name
UXP
Speakers
NComputing virtual audio deviceMicrophone
NComputing virtual audio device
RDP
Remote Audio
Remote Audio
What actual audio output (playback) and input (recording) device will be used depends on the configuration of device audio settings in the Peripherals section of Setup GUI.
During native redirection the properties of the audio devices usually get set to some system-specific values. E.g. for vSpace sessions the sampling rate for the playback device will be set to 22050 Hz by default, the resolution to 16-bit, stereo. Connecting a device supporting a higher sampling rate will be not beneficial, as the system will use own settings anyway. To fully use the capabilities of higher-end audio devices the Generic USB redirection should be used.
The Generic USB redirection of Audio devices is possible with both protocols: UXP and RDP.
The audio devices redirected in the generic way appear in terminal session with their standard name and all capabilities of the devices can be used. This includes higher sampling rates and additional elements of the device, like control buttons.
Note: What needs to be considered when planning to use the Generic USB redirection for audio devices is that this redirection method requires transmission of big amounts of raw audio data, what, especially when using higher sampling rates, can cause very high network traffic. If there is not enough network bandwidth between the terminal server and the thin client device, or when any of the communicating parties will be unable to process the data on time, the interruptions in reproduced or recorded sound are to be expected.