Frequently Asked Questions about Auracast
Basics
1. What is Auracast?
Auracast is a new wireless audio transmission technology over Bluetooth that allows you to share sound with multiple people at the same time, similar to a “Bluetooth radio”. It is part of the new generation of Bluetooth LE Audio.
2. What is the difference between Auracast and classic Bluetooth?
Classic Bluetooth connects two devices. Auracast, however, can broadcast audio to one listener, but also to hundreds of listeners at once, for example in public spaces, cinemas or at airports.
3. What are the benefits of Auracast for hearing aid or implant users?
Auracast enables direct audio transmission to a compatible hearing aid or implant – without delay and noise. It significantly improves speech understanding in challenging acoustic environments, for example at train stations or in lecture halls.
4. Do I need special headphones or devices?
Yes. You need compatible headphones, hearing aids or mobile devices that support Bluetooth LE Audio and Auracast. More and more new products offer this feature.
5. Where is Auracast used?
Auracast is used at airports, in schools, cinemas, museums, sports arenas, public transport and in homes. It improves the intelligibility of announcements and the listening experience.
6. How do I connect to an Auracast broadcast?
Connecting is simple – on a compatible device you will see a list of available broadcasts, similar to Wi-Fi. Just select one and listen. Some devices even connect automatically.
7. Is connecting via Auracast secure?
Yes. A broadcast can be public or private. In private mode, access is protected by a password or QR code, which is ideal for business presentations or personal meetings.
8. Can I broadcast my own Auracast signal?
Yes, if you have a transmitter with Auracast support. It can be connected for example to a microphone, TV or sound system and used to share audio with others.
9. What is the range of Auracast?
The range depends on the device and the environment, typically between 15 and 100 meters. In open spaces, the range can be even greater.
10. Is Auracast suitable for home use?
Absolutely yes. You can, for example, watch a movie and share the sound with multiple headphones without delay, or stream music for guests while everyone adjusts the volume individually.
11. Who is behind the Auracast technology?
Auracast is a technology developed and managed by the Bluetooth SIG (Special Interest Group), which oversees the development and standardization of Bluetooth.
12. Is Auracast free for listeners?
Yes, receiving audio via Auracast is completely free. Users do not pay any fees for using it.
13. Does Auracast work over the internet?
No. Auracast works locally over Bluetooth and does not depend on an internet or Wi-Fi connection.
14. Can I receive Auracast on smart glasses or wristbands?
Yes, if the device supports Bluetooth LE Audio and has an audio output. It depends on the specific model.
15. How do I know if my device supports Auracast?
You can find this information in the device specifications (for example on the manufacturer’s website). Look for support for Bluetooth LE Audio and Auracast, which is often listed as a separate feature.
16. Does Auracast support high-quality audio?
Yes. Thanks to the new LC3 (Low Complexity Communication Codec), Auracast offers very high audio quality with low power consumption.
17. Can Auracast be used outdoors?
Yes. Auracast is suitable for indoor and outdoor use, for example at festivals, in parks or at sports venues.
18. Who benefits most from Auracast?
The technology is especially useful for people with hearing loss, travelers, visitors to cultural events, tourists, seniors and everyday users at home.
19. Can Auracast replace induction loops for deaf and hard-of-hearing people?
Yes. Auracast has the potential to replace outdated induction loops, offering wireless transmission, higher sound quality and no need for complex installation.
20. Is it necessary to install an app to use Auracast?
In some cases yes, for example if the broadcast is protected by a QR code. However, most devices have the function integrated directly in the system, similar to Wi-Fi or Bluetooth.
21. What about audio delay (latency)?
Auracast uses modern codecs, which keep delay to a minimum. This is ideal for transmitting speech and music in real time.
22. How many people can connect to the same broadcast?
Auracast allows dozens to hundreds of listeners to connect at the same time, depending on the power of the transmitting device.
23. Can there be multiple Auracast broadcasts in one place?
Yes. There can be several broadcasts running at the same time in one location, for example in different languages or with different content (silent disco, multilingual movies).
24. Where is Auracast already being used or tested?
The technology is being tested and deployed at airports, in public transport, concert halls, schools, museums and hospitals. Its use is growing rapidly.
25. What is Bluetooth LE Audio?
Bluetooth LE Audio is a new standard for wireless audio transmission with low power consumption, high quality and support for multiple simultaneous connections. It is the foundation of Auracast technology.
26. Can I connect to audio without pairing?
Yes, this is one of the main advantages of Auracast. Connection works without classic pairing, similar to tuning in to a radio station.
27. Is Auracast suitable for children and students?
Yes. In schools and lecture halls, it improves the intelligibility of teaching and supports equal access to education, especially for children with hearing or attention difficulties.
28. Will Auracast work with my older phone or laptop?
Only if the device supports Bluetooth LE Audio. Older models usually do not support this technology, so you may need an update or a new device.
29. Can Auracast be used for interpreting?
Yes. An interpreter can broadcast the translation directly to participants’ headphones, without delay and without disturbing the surroundings.
30. Can I set my own listening volume?
Yes. Each listener can adjust the volume individually on their own device, which is more convenient than central sound reinforcement.
31. What happens if I move out of Auracast range?
The audio stream is automatically interrupted. When you return to the coverage area, some devices reconnect automatically, while others require you to reconnect manually.
32. What products support Auracast today?
Brands such as Samsung, Sennheiser, GN Hearing, Google, Apple and others are introducing Auracast support. Look for the “Auracast-ready” label in the specifications.
33. Can Auracast be combined with other technologies?
Yes. Auracast can be combined with Wi-Fi streaming, mobile apps or simultaneous interpreting, depending on the particular system.
34. Do I need a license to broadcast Auracast?
No. Broadcasting uses freely available Bluetooth frequency bands, so no special license is required.
35. What will the future with Auracast look like?
The technology has the potential to fundamentally change how people receive audio information. It will soon become a common part of smart cities, public transport and education.
36. Can Auracast be used without headphones?
Yes, if the device has a built-in speaker and supports Auracast reception. Most often, however, headphones or hearing aids are used.
37. Is Auracast suitable for fitness centers or group classes?
Yes! Instructors can broadcast instructions directly to participants’ headphones without loud music and without disturbing the surroundings.
38. How many different languages can be broadcast via Auracast?
Theoretically unlimited. Each language can have its own channel and users simply select the one that suits them.
39. How is Auracast different from FM radio?
Unlike FM radio, Auracast is digital, without hiss, without manual tuning and with higher quality and privacy. It is also strictly local.
40. Can I use Auracast when visiting a museum or gallery?
Yes. Museums can offer multilingual audio guides or commentary via Auracast – without the need to lend out players.
41. Is a Wi-Fi connection required for Auracast to work?
No. Auracast works exclusively via Bluetooth LE, without the need for Wi-Fi or an internet connection.
42. Can Auracast be used for online streams or hybrid conferences?
Yes. If you connect an Auracast transmitter to the output of a computer or streaming platform, you can broadcast the audio simultaneously over Bluetooth as well.
43. Is it possible to switch between different Auracast broadcasts?
Yes. Users can choose and switch between broadcasts from the list of available channels, similar to switching between Wi-Fi networks.
44. Are Auracast broadcasts always public?
No. A broadcast can be public (open) or private (protected by QR code, PIN or password).
45. What happens if someone forgets to disconnect from a broadcast?
Nothing serious – the device may remain connected or automatically disconnect after the broadcast ends or when leaving the coverage area.
46. How long does it take to connect to an Auracast broadcast?
Connection is almost instant, usually within 1 to 2 seconds.
47. Can Auracast be misused to distribute unwanted content?
Broadcasts can be filtered and controlled, for example limited to authorized listeners or specific areas.
48. What impact does Auracast have on device battery life?
Auracast uses Bluetooth Low Energy technology, so power consumption is very low and has minimal impact on battery life.
49. Can I use Auracast for quiet events (e.g. meditation, silent disco)?
Yes. Auracast is ideal for events where silence must be maintained – each participant hears audio only in their own headphones.
50. How quickly will Auracast become part of everyday life?
From 2024–2025, the technology is being adopted by consumer electronics manufacturers and public institutions. Within a few years, its common use in public spaces is expected.
Auracast in Everyday Life and Public Spaces
51. Where is Auracast already used today?
The technology is used at airports, in museums, schools, cinemas, conference halls, galleries, train stations and churches.
52. How will Auracast help me at a train station?
Thanks to Auracast, you will hear current announcements, information about delays, platform changes or service disruptions directly in your headphones.
53. Can Auracast be used in a doctor’s waiting room?
Yes. Patients can discreetly receive information about their place in the queue, being called in for examinations or preventive advice.
54. How does Auracast work in cinemas?
Users can select an audio track, for example an amplified soundtrack, audio description for blind people or a translation into another language.
55. Can I use Auracast at outdoor events?
Yes. For example at festivals, sports screenings or guided tours. The broadcast covers the given area.
56. Can Auracast be used on a bus or tram?
Yes, if the vehicle is equipped with a Bluetooth transmitter. Passengers can then hear announcements about stops, transfers or warnings.
57. Do I pay for listening to Auracast broadcasts in public spaces?
No, most public broadcasts are free. Fees may only be associated with premium services, if they are offered.
58. Does Auracast also help seniors?
Yes. It enables clear, direct listening to important messages in their hearing aids – without having to increase the volume in the room.
59. Can people on the autism spectrum benefit from Auracast?
Yes. Listeners have control over their acoustic environment and can choose a customized, less distracting sound according to their needs.
60. How large an area can be covered by an Auracast broadcast?
A typical range is several to tens of meters, depending on the type of transmitter and the environment (for example indoors vs. outdoor events).
61. How do I know that Auracast is being broadcast at a location?
There is usually a sign saying “Auracast Broadcast Available”. Your device will also show a list of active broadcasts nearby.
62. Can Auracast be used during a flight?
Theoretically yes, if the airline allows it. In the future, integration into on-board audio systems is expected.
63. Is there a mobile app to find Auracast broadcasts?
Yes. Some devices have the function integrated directly into the operating system, others use companion apps from manufacturers (e.g. Sennheiser, Sony).
Technical Details and Compatibility
64. What must a device have to broadcast Auracast?
It must support Bluetooth LE Audio and be equipped with software for Auracast broadcasting. In some cases, an external transmitter is sufficient.
65. How do I know if my headphones support Auracast?
The manufacturer should state Auracast or LE Audio support in the product specification. Also look for the “Auracast-ready” label or logo.
66. Can Auracast be added to an older device?
In most cases no, as older devices do not contain the required Bluetooth LE Audio chip. Sometimes an external transmitter can be used as a workaround.
67. What is the difference between LE Audio and classic Bluetooth Audio?
LE Audio offers lower power consumption, higher audio quality, the ability to broadcast to multiple listeners and supports the Auracast technology.
68. Does Auracast work with smart TVs?
Yes, if the TV supports Bluetooth LE Audio. Some manufacturers (such as LG and Samsung) have already started introducing this feature.
69. Can I receive Auracast on smart glasses or AR devices?
Yes, if the device supports Bluetooth LE Audio. The first AR glasses with this technology are already appearing on the market.
70. Do laptops and computers support Auracast?
So far only to a limited extent. Some new laptops (for example with Windows 11 and the latest chipsets) are beginning to support the technology gradually.
71. Do I have to install a special app to listen to Auracast?
Not always. Newer operating systems allow you to connect directly via the Bluetooth menu. Apps can, however, make discovering and selecting broadcasts easier.
72. How quickly does a device connect to Auracast?
Usually within 1–2 seconds, depending on the specific device and signal strength.
73. Can I connect multiple devices to one Auracast transmitter?
Yes. Unlike classic Bluetooth, Auracast allows dozens to hundreds of listeners to connect at the same time.
74. Does the number of connected listeners affect sound quality?
No. It is a broadcast technology, so audio quality does not depend on the number of connected users.
75. Can Auracast transmit anything other than audio?
It is primarily designed for audio. It can also transmit metadata (e.g. broadcast name, language), but not video or other formats.
76. Which codec does Auracast use?
The primary codec is LC3 (Low Complexity Communication Codec), which ensures high-quality audio even at low bitrates and low power consumption.
77. What if I connect to the wrong broadcast?
If you accidentally select another broadcast (for example in a foreign language or from another room), you simply leave it and choose the correct channel from the list of available broadcasts.
78. Can I use Auracast with multiple devices at the same time?
Yes. For example, you can be connected to audio via Auracast and at the same time have your phone paired with a smartwatch or another Bluetooth device. Compatibility, however, depends on the specific device.
79. Does Auracast work when the phone screen is off?
Yes. Once you are connected to a broadcast, the device can play audio even with the screen turned off – similar to listening to music.
80. How is Auracast different from classic Bluetooth pairing?
Classic Bluetooth pairing requires a one-time link between two devices. Auracast lets multiple listeners connect to a single transmitter without pairing – you simply “tune in” to the broadcast.
Future, Security and Other Aspects
81. How will Auracast be used in smart cities?
Auracast will enable direct communication between city systems and residents, for example for emergency alerts, traffic information or cultural announcements.
82. Can Auracast work together with augmented reality (AR)?
Yes. The audio layer can complement visual content in AR environments, for example during tours, training or games.
83. How is audio transmission via Auracast secured?
Public broadcasts are open, but private or premium broadcasts can be encrypted and protected with a password, QR code or authorization.
84. Can Auracast be used to track users?
No. Broadcasts are one-way, so the listener’s device is not tracked and does not leave a digital trace.
85. How is Auracast different from internet streaming?
Auracast works locally over Bluetooth and does not require the internet or mobile data, which saves battery life and costs.
86. What impact does Auracast have on battery life?
Thanks to Bluetooth Low Energy technology, power consumption is very low – lower than with classic Bluetooth connections.
87. Will Auracast be used in schools and educational institutions?
Yes. It is ideal for simultaneous interpreting, multi-language teaching or tailoring audio to students with special needs.
88. How can Auracast help in emergencies?
It allows rapid, targeted distribution of emergency messages (e.g. evacuation, fire, storm warnings) directly to headphones or hearing aids.
89. Do hearing aids support Auracast?
Yes, if they are equipped with LE Audio technology. Newer models support this feature without an additional adapter.
90. Is Auracast suitable for quiet zones and calm environments?
Absolutely. Audio is transmitted individually to headphones without disturbing others, which is ideal for libraries, hospitals or quiet zones.
91. Can Auracast be used together with translation tools?
Yes. The translation can be processed in real time and broadcast into different language channels via Auracast.
92. What if there are multiple Auracast broadcasts nearby?
Users simply choose the desired broadcast from the list of available channels on their device.
93. How will Auracast develop over the next few years?
It is expected to spread rapidly into consumer electronics, public infrastructure, education, culture and healthcare.
94. Will Auracast be available in more affordable devices?
Yes. Manufacturers plan to integrate LE Audio-capable chips into more affordable phones, headphones and other devices.
95. Can I easily turn Auracast off or ignore it?
Yes. Listening is always voluntary, and connecting to a broadcast only happens if the user chooses to do so.
96. Who is responsible for the content broadcast via Auracast?
The operator of the transmitter is responsible for the content, for example a transport company, museum or event organizer.
97. Will Auracast be supported in cars?
Very likely yes. In the future, it could be used, for example, to transmit traffic information or warnings from surrounding infrastructure.
98. Are there limits on the number of connected devices?
Theoretically no. Auracast is designed as a broadcast technology that can serve hundreds of devices at once.
99. Is Auracast suitable for children?
Yes. It provides safe, direct access to audio content, which is useful in schools, museums or for home learning.
100. When will Auracast become a normal part of life?
Between 2025 and 2028, widespread adoption is expected thanks to support in phones, TVs, hearing aids and public services.