User guide

RGS overview 35
2-17-1 Remote audio on Windows
RGS on Windows supports remote audio, allowing audio generated by the application on the Remote Computer
to be captured and transmitted to the Local Computer for playback. In addition, microphone input on the Local
Computer can be sent to the application running on the Remote Computer. Figure 2-24 shows the RGS audio
subsystem (green boxes) for Windows, and the audio data paths—these data paths are described in Table 2-1.
Figure 2-24 RGS audio subsystem on Windows
Table 2-1 describes each of the audio data paths. The numbering and lettering in the table correspond to the
numbering and lettering in Figure 2-24.
Table 2-1 Windows RGS audio data paths
Audio Playback from the Remote Computer to the Local
Computer
Sending of microphone audio from the Local Computer to
the Remote Computer
1. The application-generated audio output.
2. If an audio device is installed, the application-generated
audio is routed through it.
3. If there is no audio device (such as with a blade
workstation), the HP Remote Audio virtual device is
automatically installed, and the application-generated audio
is routed to it.
4. Audio from either the audio device or the HP Remote Audio
virtual device is sent to the RGS Audio Recorder.
5. The RGS Audio Recorder captures the audio, which is sent
by RGS to the Local Computer.
6. The RGS Audio Player on the Local Computer decodes the
received audio, and sends it to the audio mixer.
7. The output of the audio mixer is sent to the Local Computer
audio device.
8. The audio device drives an audio output device, such as a
speaker.
USB devices are Local:
a. The user selects the microphone source, either a USB
microphone or an analog microphone. The RGS
Audio Recorder captures the selected microphone
source.
b. The audio captured by the RGS Audio Recorder is
sent by RGS to the RGS Audio Player on the Remote
Computer.
c. The RGS Audio Player decodes the audio signal, and
sends it to the HP Remote Microphone virtual device.
d. The HP Remote Microphone virtual device appears to
the application as a local microphone, and sends the
microphone audio to the application.
USB devices are Remote: Beginning at RGS 5.2.0, certain
USB microphones can be mounted to the Remote
Computer using the remote USB driver—see Appendix B
for the supported microphones. See the previous section
for a description of Remote USB operation.
Application
RGS Audio Player
HP Remote Microphone
virtual device
audio device
analog
microphone
RGS Audio
Recorder
USB
microphone
RGS Audio
Recorder
RGS Audio
Player
Application
mixer
HP Remote Audio
virtual device
audio device
Windows
Remote Computer
Windows
Local Computer
1
3
5
6
7
8
ab
c
d
2
4
1 8
_
Playback of audio
generated by the
Remote Computer
application
a
_
d
Microphone audio sent
to the Remote Computer
application
Paths
Paths
Path when USB
devices are remote
Remote
USB driver
Path when USB
devices are local