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 Windows PC, it will not have any effect on the received stream but may unmute the Windows 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.
- (U) Unsupported resolution - means that Airtame did not get correct resolution list and had to use default ones.
- (P) Preferred mode: The screens preferred mode, may not include Audio
- (N) Non-standard Mode
- (C) CEA video standard
- (V) VESA video standard
Problems with macOS
To capture and stream audio on Apple computers Airtame uses a tool called Soundflower - user would need to install it manually after launching app for the first time. If this was not done and you do not see Soundflower as an audio output option, please follow the below steps to install Soundflower manually:
- Download Soundflower from this link
- Run the uninstaller script by clicking on it and then clicking the play button (If needed)
- Open the soundflower.pkg file, it will fail
- Open "System Preferences" and go to "Security & Privacy"
- Click "Allow" at the bottom of the window
- Open the soundflower.pkg file again and complete installation
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.
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:
- Right-click on the sound icon in your tray (bottom right), click Sounds and select the Playback tab
- Right-click the Playback device marked with Default Device and click on Properties
- Go to advanced tab in properties
- Disable hardware acceleration by unticking the box and apply changes
- ☝️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:
- Press the windows key in the computer's keyboard
- Type "Services.msc"
- Right-click the correspondent service, i.e.: "Nahimic Service" or "Waves Audio Services"
- Click on "Stop"
- Right click again on the name of the service
- Click on "Properties"
- In the "Startup Type" option select "Disable"
- Click on "Apply"
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 workaround but try the steps further down in this article. We are working with HP to solve the issue.
⚠️ 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
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.
If your laptop did not receive a fix from Conexant:
The possible fix is to disable one option in the Conexant sound driver and restart Airtame and your PC: https://support.hp.com/id-en/document/c05851794
If that fix doesn't work for you, try these additional steps:
- Close the Airtame application.
- Right-click the audio icon in the system tray.
- Select Playback devices.
- Select Speakers, then click the Properties button.
- Select the "Spatial Sound" or "Physical Sound" tab.
- Switch from "None" to the "Windows...." option
- Select Apply, then click OK.
- Restart the Airtame application.
There is also a third option that works in some cases:
- Open device manager
- Head to Unit - sound, video, game
- Select Conexant audio driver and click "update driver"
- Choose manually
- Untick "Compatible hardware"
- Select "Microsoft"
- Select "Unit high definition audio"