How Audio Streaming works

When the user is streaming audio to an Airtame device, the sound is automatically muted on the user’s machine so that it only comes from the display. If the user tries to unmute or adjust the volume on the PC, it will not have any effect on the received stream but may unmute the PC resulting in audio clashing, where it sounds from two places at once at different times.

To adjust the volume, you must use the volume controls of the display that is receiving the stream.

Problems With Displays

Resolutions with/without audio support

Airtame takes the resolution that is preferred by the TV. In some cases, the detected by Airtame resolution, might not support audio. This can be easily fixed by manually choosing the output resolution. For this, go to Device Management, scroll to the bottom and click "Advanced Settings" and click on the drop down menu "Resolution". Then select the highest available resolution with audio, as shown below.

  • (P) Preferred mode: The TV's preferred mode, may not include Audio
  • (N) Non-standard Mode
  • (C) CEA video standard
  • (V) VESA video standard

Problems With Windows OS

There are two known issues when streaming sound on windows. One is because 5.1 surround sound is not supported and the other is on low-power consumption devices like notebooks and tablets.

Hardware Acceleration 

Symptom: Audio continues to sound from Computer at the same time as on the streamed screen.

Some low powered devices (e.g. tablets) use hardware acceleration. In this case, the user must simply disable the audio hardware acceleration following the steps below:

  1. Right-click on the sound icon in your tray (bottom right), click Sounds and select the Playback tab
  2. Right-click the Playback device marked with Default Device and click on Properties
  3. Go to advanced tab in properties
  4. Disable hardware acceleration by unticking the box and apply changes
  5. ☝️In some cases you will need to change the "spatial sound" format to "off" or "Windows..."

Computers running audio management software, like Waves MaxxAudio or Nahimic may experience the audio to continue playing on the computer while doing an audio stream with Airtame.

The audio management software should be completely closed before the streaming session.

It is also recommended, for a permanent solution, to disable the Windows service running the aforementioned program:

  1. Press the windows key in the computer's keyboard
  2. Type "Services.msc"
  3. Right-click the correspondent service, i.e.: "Nahimic Service" or "Waves Audio Services"
  4. Click on "Stop"
  5. Right click again on the name of the service
  6. Click on "Properties"
  7. In the "Startup Type" option select "Disable"
  8. Click on "Apply"

Other

A/V Synchronization

Some screens and projectors, including Epson, have a setting called "Image Processing" which, when set to "Fine" can cause for audio to become out of sync with the video. Changing this setting to "Fast" will correct this issue.

Conexant audio drivers

Many HP Laptops are affected by a bug in their sound driver "Conexant Audio" We have not found a consistent work around but try the steps further down in this article. We are working with HP to solve the issue. 

The possible fix is to disable one option in the conexant sound driver and restart airtame or your PC: https://support.hp.com/id-en/document/c05851794

If that fix doesn't work for you, try these additional steps:

  1. Close the Airtame application.
  2. Right-click the audio icon in the system tray.
  3. Select Playback devices.
  4. Select Speakers, then click the Properties button.
  5. Select the "Spatial Sound" or "Physical Sound" tab. 
  6. Switch from "None" to the "Windows...." option
  7. Select Apply, then click OK.
  8. Restart the Airtame application.

There is also a third option that works in some cases:

  1. Open device manager
  2. Head to Unit - sound, video, game
  3. Select Conexant audio driver and click "update driver"
  4. Choose manually
  5. Untick "Compatible hardware"
  6. Select "Microsoft"
  7. Select "Unit high definition audio"

⚠️ HP/Conexant Audio fix

We've been informed by one of our customers that HP has released an update to the Conexant audio driver that has fixed the audio streaming problem for them.
If you have one the following HP laptop models, please try the solution:

HP EliteBook 840 G5 Notebook PC
HP EliteBook 846 G5 Notebook PC
HP EliteBook 850 G5 Notebook PC
HP ZBook 14u G5 Mobile Workstation
HP ZBook 15u G5 Mobile Workstation
HP EliteBook 830 G5 Notebook PC
HP EliteBook 836 G5 Notebook PC
You can get the update installer and more information in these links:

ftp://ftp.hp.com/pub/softpaq/sp92001-92500/sp92123.exe
ftp://ftp.hp.com/pub/softpaq/sp92001-92500/sp92123.html
ftp://ftp.hp.com/pub/softpaq/sp92001-92500/sp92123.cva

After installing the update, make sure to restart the Airtame Application, then try streaming with audio enabled.

Other HP laptops models have received updates to the driver as well. If your laptop is not on the list it is worthy to check the HP website for the Conexant driver.

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