The Bluetooth Special Interest Group (SIG), the organization responsible for setting Bluetooth technology standards, has announced the adoption of a new technology called High Data Throughput (HDT). This technology aims to create a qualitative leap in Bluetooth capabilities by increasing the maximum data transfer rate in Bluetooth LE technology from 2 Mbps to 7.5 Mbps, representing an increase of nearly four times the current capacity.
Unifying High-Resolution Audio Standards
This step comes to address a technical gap in the wireless audio market; while High-Res and Lossless audio technologies are currently available, they often rely on proprietary protocols specific to certain companies, such as Qualcomm's aptX Lossless or Sony's LDAC. HDT technology aims to provide a standardized and unified foundation that allows various companies to offer a premium audio experience without the need to rely on company-specific software.
Technically, HDT achieves this leap by introducing a new physical layer (PHY) in the Bluetooth chip responsible for transmitting and receiving signals, and by integrating with modulation technologies, allowing for the transfer of larger amounts of data in less time.
What Will Change in Practice?
The benefits of HDT are not limited to audio quality alone, but also extend to include other technical aspects:
- Power Consumption Efficiency: Due to the technology's ability to transfer massive amounts of data in short periods, it naturally contributes to improving the power consumption efficiency of devices.
- Connection Reliability: The technology will work to enhance connection strength and stability, helping devices maintain consistent wireless performance even in crowded or challenging environments.
- Expanding Scope: Wearable devices, smart glasses, and smart home technologies will benefit from these high speeds, not just headphones.
Compatibility and Timeline
It is important to note that HDT technology is an optional feature within the Bluetooth Core 7.0 standard, meaning that current devices will not receive these features through software updates. The first compatible audio products are expected to begin appearing by 2027. However, some companies have already begun preparing; Qualcomm has announced that its new FastConnect 8800 connectivity system already supports the Bluetooth 7 standard and HDT capabilities, providing an indication of hardware readiness in smartphones before compatible headphones arrive.