LE Audio: The next generation of Bluetooth audio



  • Building on 20 years of innovation, LE Audio will not only enhance the performance of Bluetooth audio but will bring all its benefits to people with hearing loss and introduce Audio Sharing, an innovative new use case with the potential to once again change the way we connect with each other and experience the world around us.

    LE Audio is on Bluetooth Low Energy

    alt text

    As the names suggest, Classic Audio operates on the Bluetooth Classic radio while LE Audio operates on the Bluetooth Low Energy radio. LE Audio will not only support development of the same audio products and use cases as Classic Audio, it will introduce exciting new features that promise to improve their performance as well as enable the creation of new products and use cases.

    LE Audio is LC3

    LE Audio will include a new high-quality, low-power audio codec, the Low Complexity Communications Codec (LC3). Providing high quality even at low data rates, LC3 will bring tremendous flexibility to developers, allowing them to make better design tradeoffs between key product attributes such as audio quality and power consumption.

    LE Audio is Multi-Stream

    Multi-Stream Audio will enable the transmission of multiple, independent, synchronized audio streams between an audio source device, such as a smartphone, and one or more audio sink devices.

    https://3pl46c46ctx02p7rzdsvsg21-wpengine.netdna-ssl.com/wp-content/uploads/2019/12/multistream-icon.png

    LE Audio is Bluetooth Hearing Aids

    Building on its low power, high quality and multi-stream capabilities, LE Audio adds support for Hearing Aids. Bluetooth audio has brought significant benefits to a large percentage of the global population. Wireless calling, listening, and watching have made people safer, more productive, and more entertained. LE Audio will enable the development of Bluetooth hearing aids that bring all the benefits of Bluetooth audio to the growing number of people with hearing loss.

    alt text

    LE Audio is Broadcast

    LE Audio will also add Broadcast Audio, enabling an audio source device to broadcast one or more audio streams to an unlimited number of audio sink devices. Broadcast Audio opens significant new opportunities for innovation, including the enablement of a new Bluetooth use case, Audio Sharing.

    Broadcast is Audio Sharing

    Bluetooth Audio Sharing can be personal or location-based. With personal audio sharing, people will be able to share their Bluetooth audio experience with others around them; for example, sharing music from a smartphone with family and friends. With location-based audio sharing, public venues such as airports, bars, gyms, cinemas, and conference centres can now share Bluetooth audio that augments the visitor experience.

    Source : https://www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/le-audio/



  • Woow awesome article...I have a little query here. I have found recently that we can stream Audio using ESP32 over BLE. So, in this article, it is told that the individual streaming of audio is possible. Which means do they have two BLE's in two ear pods working collaboratively when used for both ears and working individually when streamed individually?


Log in to reply
 

Recent Posts

  • @Suhailjr But I think since it's not a plug and plug play system and it will laying on the PCB for the long term, it might be fine. for me, it's similar to the Intel Edison and the PICO-IMX7 System-on-Module

    dade502a-71f6-4da0-bd7d-0e9a0b602cb0-image.png

    a4b8898f-90d4-4a34-ba5d-81ab76fda904-image.png

    read more
  • @salmanfaris at last they update their design. T
    What you think on the updated connector. I felt like its more fragile and high chance for corottion issue due to humidity for long term use.

    read more
  • Built on the same 64-bit quad-core BCM2711 application processor as Raspberry Pi 4, Compute Module 4 delivers a step-change in performance over its predecessors: faster CPU cores, better multimedia, more interfacing capabilities, and, for the first time, a choice of RAM densities and a wireless connectivity option.

    3094f292-3301-4364-a444-d828f6e77ff8-image.png

    You can find detailed specs here,

    1.5GHz quad-core 64-bit ARM Cortex-A72 CPU VideoCore VI graphics, supporting OpenGL ES 3.x 4Kp60 hardware decode of H.265 (HEVC) video 1080p60 hardware decode, and 1080p30 hardware encode of H.264 (AVC) video Dual HDMI interfaces, at resolutions up to 4K Single-lane PCI Express 2.0 interface Dual MIPI DSI display, and dual MIPI CSI-2 camera interfaces 1GB, 2GB, 4GB or 8GB LPDDR4-3200 SDRAM Optional 8GB, 16GB or 32GB eMMC Flash storage Optional 2.4GHz and 5GHz IEEE 802.11b/g/n/ac wireless LAN and Bluetooth 5.0 Gigabit Ethernet PHY with IEEE 1588 support 28 GPIO pins, with up to 6 × UART, 6 × I2C and 5 × SPI

    31354fad-6332-40e8-b324-53e0aa5dbace-image.png

    Compute Module 4 IO Board
    89a3b68b-bb74-4002-9c2b-d32c2e1450b3-image.png

    The IO board provides:

    Two full-size HDMI ports Gigabit Ethernet jack Two USB 2.0 ports MicroSD card socket (only for use with Lite, no-eMMC Compute Module 4 variants) PCI Express Gen 2 x1 socket HAT footprint with 40-pin GPIO connector and PoE header 12V input via barrel jack (supports up to 26V if PCIe unused) Camera and display FPC connectors Real-time clock with battery backup

    More details:
    https://www.raspberrypi.org/products/compute-module-4/?variant=raspberry-pi-cm4001000, https://www.raspberrypi.org/blog/raspberry-pi-compute-module-4/

    read more
  • 28e1870e-33fe-4791-bc74-05c9d58098da-image.png

    Seeed is currently counting down for the 10 year anniversary of the debut of Grove 🎉. In the past 10 years, we have seen many wonderful projects created by Grove from our user and community. We want to invite you to join us to celebrate the 10 year anniversary of Grove 🤩.

    In the Grove 10 Years Celebration, we’d like to collect the stories of “Grove with You”, which we want to invite our users to share their stories they have with Grove products.

    => What project you’ve made out of Grove?
    => What is your favourite Grove?
    => which one was the first Grove you’ve purchased?

    Seeed encourages you to post and share photos, videos, stories of Grove in the Seeeed Forum, or any other platforms below that you’d like to use.

    The following ways to find us, and tag #grove10 to share the project with us!

    Twitter (@seeedstudio) Instagram (@seeedstudio) or simply email your project to grove10@seeed.cc

    Feel free to be creative in documenting your projects–we will be selecting top 10 most “Grovy” winning entries from the submissions, and the winners will receive a $100 Grove Surprise Pack 😋 as a special gift.

    Looking forward to seeing your projects! 🥳

    read more
  • @kowshik1729 I think that might not get since the platform is not opensource! but they provided everything you need to develop a system with that.

    read more