Advertisment

Windows 7, whats new in remote audio?

Among the new audio features are the ability to record audio to a remote session, and more control over the way RDP adjusts the audio quality.

Audio Capture

If you take a look at the “Local Resources” tab in the Remote Desktop Connection options, you’ll see the remote audio drop down box has been replaced with a button that says “Settings…” Clicking this button reveals the following:

image

Now not only do you have the option to “Play on this computer,” but you can also “Record from this computer.” This feature allows you to use voice recognition, voice chat, and other software that requires a microphone.

Please keep in mind that audio capture must be enabled in the Remote Desktop Session Host Configuration on the server before it can be used.

Audio Quality Modes

Remote audio playback has always tried to automatically adjust its bandwidth usage based on the current network conditions. This allows audio to work pretty well on anything from a 56k modem up through 10 gigabit Ethernet connection, but this flexibility comes at a cost. Adjusting the bandwidth on the fly requires the server to delay audio a little longer for processing before sending it to the client, which can cause the audio to be out of sync with the images on the screen.

Sometimes, you know you are on a network that’s fast enough to handle the best quality audio always. For these cases, you can now change the audio quality mode. This tells the server to assume the network can handle the best quality audio, and to send it as soon as it’s ready. Since the server processing doesn’t delay the audio, the synchronization between audio and video are much improved, and the audio sounds better too.

Enabling this feature requires changes to both the server- and client-side configuration. On the server, the easiest way to enable this feature is from the Group Policy editor. Go to Computer Configuration:Administrative Templates:Windows Components: Remote Desktop Session Host:Device and Resource Redirection. The policy in question is “Limit audio playback quality.” Set this to “Enabled,” and then set the “Audio Quality” option to either Medium or High.

On the client side, you need to add the audioqualitymode setting to the RDP file. The three possibilities for this setting are:

  • audioqualitymode:i:0   -> Dynamic quality
  • audioqualitymode:i:1   -> Medium quality
  • audioqualitymode:i:2   -> High quality

Dynamic quality uses the old behavior and attempts to provide the best quality with the available bandwidth. Medium uses a single audio format, which allows reasonable quality, low latency, and doesn’t use too much bandwidth. On the other hand, high quality uses uncompressed audio for the best sound quality while also having low latency.

This provides just a brief introduction to some of the new features in Windows 7 Remote Desktop Services. Stay tuned for posts with more in-depth information about managing and using these new features.

image

Connect on Twitter

Want to make sure you don't miss out on any upcoming news and videos?
Join our *NEW* mailing list by signing up with the Virtualization Community

Follow @ervik

Become a partner

Find us around the web

image image image

 

 

Cookies are small text files held on your computer. They allow us to give you the best browsing experience possible and mean we can understand how you use our site.By using our website you accept our use of cookies. Our Policy