Hear the broadcast. Read it live. Share the captions.
Aura C brings an Auracast broadcast into a compatible phone, tablet, or computer—so you can listen through your own audio device, read live captions, or show captions on a venue screen.
Important: Use the VenuCast Connect app on a compatible phone or tablet. The app is not installed on the venue computer.
ListenLive captionsVenue screen
FIRST, KNOW THE ROLES
One receiver. Three clear jobs.
Aura C receives the broadcast. VenuCast Connect finds it, and Auto Reconnect remembers it for the next connection. Your phone or computer creates the live captions.
1Auracast broadcastLive or recorded audio
→
2Aura CReceives the selected broadcast
→
3Your devicePlays audio or creates captions
Caption accuracy and language support depend on the phone or computer—not on Aura C.
COMMON SETUP
Connect once, then choose your result.
Complete these four steps on a compatible USB-C phone or tablet before listening or creating captions.
1
Install VenuCast Connect
Search for VenuCast Connect in your phone or tablet app store. If it is not listed, use the official download method supplied with your product or contact Avantree Support.
Ready when: the app opens to the Aura C device screen.
2
Allow the requested permissions
Nearby devices / Bluetooth
Location, if your system requests it
Audio recording and notifications when requested
Camera only when scanning a broadcast QR code
If USB access is denied: unplug Aura C, reconnect it, then choose Allow in the USB prompt.
3
Plug Aura C into the phone
Insert Aura C fully into the phone or tablet USB-C port. If asked whether VenuCast Connect should open for this USB device, confirm it.
Success: the app shows Aura C Connected or opens the Auracast Assistant.
4
Find and join the broadcast
Tap Find Auracast.
Choose the correct broadcast from Nearby Broadcasts.
For a locked broadcast, enter its password. Or use the QR scanner when the venue provides a broadcast QR code.
Success: the chosen broadcast is highlighted and its audio is available for listening and captions.
WHAT DO YOU WANT TO DO?
Choose one path.
Your choice opens only the steps you need. You can change paths at any time.
PERSONAL LISTENING
Listen through the device you already use.
Use headphones, earbuds, a supported hearing device, or the phone speaker.
1
Connect your audio device to the phone
Pair your Bluetooth headphones, earbuds, or supported hearing device in the phone’s normal settings.
Observe: the phone shows that audio device as connected.
2
Choose the App output
In Aura C settings, open Default Output. Start with Auto; select the named audio device or Speaker if needed.
Success: broadcast speech plays through the selected output.
3
Set a comfortable volume
Start low, then adjust the phone and connected audio device gradually.
If silent: return to Default Output, select the device directly, and rejoin the broadcast.
Output names depend on what is connected to your phone.
PERSONAL LIVE CAPTIONS
Turn the broadcast into text on your phone.
Aura C supplies the broadcast audio. Your phone’s accessibility feature captions speech within that audio—whether it comes from a live talk, a recording, a program, or another audio source.
1Join the broadcast
Complete the common setup above.
2Keep listening your way
No output change is required. Keep listening through connected Bluetooth headphones or Bluetooth hearing aids while viewing captions on the phone.
3Turn on Live Captions
Follow the instructions for your phone below.
On iPhone or iPad
Open Settings → Accessibility → Live Captions, then turn on Live Captions.
Open the floating Live Captions control and choose iPhone Audio.
Play the Auracast broadcast. Move or resize the caption window so the text is easy to read.
✓Success: speech in the broadcast appears as text while audio continues through your current listening device.
Apple Live Captions requires a supported device and is not available in every language, country, or region. Check Apple’s current guide ↗
On Android
Press a phone volume button, open the extended volume controls, then tap Live Caption.
If the control is missing, search for Live Caption in Settings. Download the requested language pack the first time.
Play the Auracast broadcast and move the caption box where it is easy to read.
✓Success: the phone captions speech in the broadcast while audio continues through your current listening device.
Success: spoken broadcast audio appears as text in the computer caption window.
4
Put the captions on the venue screen
Recommended: HDMI. Connect the computer’s HDMI output to the display or projector, select the correct HDMI input, then mirror the desktop or move the caption window onto the extended display.
Windows: press Windows + P, then choose Duplicate for the simplest setup or Extend for a dedicated caption screen.
Mac: open Displays and choose Mirror, or use the display as an extended desktop.
Wireless option: use the computer and display’s supported casting feature only after testing it at the venue.
Important: HDMI or wireless casting shows the computer’s caption window. It does not replace the phone setup and does not install the App on the computer.
5
Run a full test before guests arrive
Play representative broadcast audio and confirm that its speech appears as captions.
Check the caption language, text size, contrast, and viewing distance.
Confirm the large screen remains awake and on the correct input.
Keep the phone available in case Auto Reconnect must be set again.
Ready: speech in the broadcast audio becomes readable text on the venue screen with acceptable delay.
Do not use automatic captions as the only channel for emergencies, safety instructions, or legally required communication. Accuracy varies with language, accent, audio quality, and operating-system support.
60-SECOND OVERVIEW
See the three Aura C use cases.
The official overview shows personal listening, phone captions, and venue captions.
USBThe App does not see Aura CUSB access or permission problem
Unplug and firmly reconnect Aura C.
Accept the USB access prompt and choose VenuCast Connect.
Allow Nearby devices / Bluetooth and other requested permissions.
Restart the App, then reconnect Aura C.
⌁No broadcasts are foundTransmitter, distance, or permission
Confirm the Auracast transmitter is on and broadcasting.
Move closer to the transmitter.
Confirm Bluetooth and Nearby devices permission are on.
Tap Find Auracast again.
🔒A locked broadcast will not joinPassword or QR code problem
Re-enter the password exactly as supplied by the venue.
Or scan the venue’s valid Auracast broadcast QR code.
If the password changed, remove the old selection and join again.
♪Connected, but there is no soundWrong App output
Open Aura C settings and start with Default Output: Auto.
If needed, select the connected headphones, hearing device, or Speaker directly.
Raise volume gradually on both the phone and audio device.
Leave and rejoin the broadcast.
CCLive captions do not appearAudio source, language, or OS support
Confirm the broadcast contains speech before troubleshooting captions.
On a phone, keep your preferred listening output and select device audio in Live Captions.
On a computer, select Aura C / USB Audio Device as input and enable microphone audio in Live Captions.
Install or choose the spoken language.
Confirm the device and region support Live Captions.
PCThe computer does not reconnectAuto Reconnect may be off
Move Aura C back to the phone.
Open VenuCast Connect and join the correct broadcast.
Open Aura C settings and turn on Auto Reconnect.
Confirm the switch remains on, then move Aura C back to the computer and stay near the transmitter.
▣Captions are missing from the big screenDisplay mode or window placement
Confirm captions appear on the computer first.
Select the correct HDMI input on the display.
Choose Duplicate, or move the caption window to the extended display.
Disable display sleep for the event and test again.
QRThe QR code is rejectedCamera permission or invalid code
Allow Camera permission for VenuCast Connect.
Clean the camera lens and fill the scan frame with the code.
Confirm it is an Auracast broadcast QR code, not a general webpage QR code.
REFERENCE
App controls, compatibility, and limits.
Use this section when the main flow works but you need a setting or requirement.
Interface wording may change between the demo and released App.
Useful App controls
Find Auracast
Scans for nearby broadcasts.
QR scanner
Joins a valid broadcast from a venue QR code.
Default Output
Routes audio automatically or to a selected device / Speaker.
Auto Reconnect
Remembers the selected broadcast for automatic reconnection, including after Aura C is moved from the phone to a computer.
Compatibility check
Phone / tablet: compatible USB-C hardware and operating system, plus VenuCast Connect.
Personal captions: a phone that supports Live Captions in the spoken language and region.
Windows venue captions: Windows 11 version 22H2 or later for Microsoft Live Captions.
Mac venue captions: an Apple-silicon Mac with Live Captions available for the language and region.
Venue screen: HDMI input/cable or a tested compatible wireless display method.
What Aura C does—and does not do
✓
Does receive a selected Auracast broadcast and deliver its audio to a compatible host device.
×
Does not generate captions by itself. Captions come from the phone or computer.
!
Does not provide a Windows or Mac version of VenuCast Connect. Join the broadcast and turn on Auto Reconnect on mobile first.
FIRMWARE UPDATE
Update Aura C only when an update is offered.
Firmware is not part of normal setup. Use VenuCast Connect or the official Aura C firmware page when an update or support instruction directs you here.
1
Prepare
Keep the phone charged and Aura C firmly connected.
2
Start the update
Open Aura C Settings → Firmware Update, review the release note, then confirm.
3
Wait for completion
Do not unplug Aura C until the App confirms success.
For the fastest answer, start with a support ticket. Choose Aura C / BTRC-C83-BLK and include the phone or computer model, operating system, symptom, and screenshots.
