The group launches LE Audio headset solution based on Airoha's products
Date：March 29, 2025 Views：30
Source: General Assembly Author: General Assembly
On February 19, 2025, the leading international distributor of semiconductor components in the Asia Pacific region, DDA Holdings, announced that its Pinnia unit has launched LE Audio headset solutions based on Airoha's AB1571D, AB1571AM and AB1565AM products.
Figure 1- Display board of LE Audio headset solution based on Airoha products
The birth of LE Audio (Low Power Audio) technology standard has brought four key performance innovations to the industry: low complexity communication codec (LC3), multi-streaming audio, hearing aid function expansion, and broadcast audio Auracast function. Among them, Auracast broadcast Audio function as the core highlight of LE Audio, to achieve one-to-many one-way audio playback function in line with industry standards, which subverts the audio service mode of traditional headphones. With the support of LE Audio technology, Dafa launched LE Audio headset solutions based on Dafa Technology AB1571D, AB1571AM and AB1565AM products.
Figure 2- The scenario application diagram of LE Audio headset solution based on Airoha
The AB1571D, AB1571AM and AB1565AM are high performance Bluetooth solutions from DFA Technology. The AB1571D is based on an ARM Cortex-M4F processor and is Bluetooth 5.3 compliant and LE Audio technical certified. The AB1571D has an embedded Tensilica HiFi Mini processor with integrated audio codecs, hybrid active noise cancellation (ANC), next-generation echo cancellation, and ultra-wideband AI noise cancellation to improve voice call quality in headphone products. Not only that, it also supports a new generation of ambient sounds, providing a more natural listening experience.In addition to the ARM Cortex-M4F processor and Tensilica HiFi Mini processor, the AB1565AM also supports Airoha MCSync (multicast synchronization) technology, allowing the earbuds to seamlessly switch between the left and right earbuds for a more balanced and low-latency sound.
Figure 3- Block diagram of LE Audio headset solution based on Airoha products
In terms of hardware design, the solution adopts AB1571D as the Dongle end, and AB1571AM+AB1565AM as the headset end, which is used to receive LE Audio signal of Dongle end. headset can be connected by USB/DC5V/BATTERY/USB to UART, etc.Through AB1571D, this scheme can realize the connection mode of LE Audio Unicast and Broadcast, and complete the function realization and test of LE Audio. In Unicast mode, LE Audio Dongle acts as a unicast client for the basic audio profile (BAP), scanning for ads from the unicast server and initiating a connection to the unicast server. In Broadcast mode, broadcast Audio streams from USB/Linein are transmitted through LE Audio Dongle.
The LE Audio specification is one of the most important milestones in the Bluetooth audio industry in a decade. Dafa Technology as a pioneer in the Bluetooth industry, its Audio series chips, all support the realization of LE Audio function. In addition to hardware support, DFA also offers a resource-rich software development kit that integrates the diverse functions required for Bluetooth applications, greatly simplifying the development of Bluetooth connectivity for all types of terminal devices. In the future, we will further deepen our cooperation with Dafa Technology to introduce high-quality connectivity experiences to the global wireless audio market.
Core technical advantages:
High quality audio LC3 codec supports HD audio transmission at low data rates (50% SBC);
Lower latency: The A2DP has 70% less latency and the same stability as the classic BT3
Clear call quality: 2x sampling rate (32kHz vs 16kHz);
New use cases:
BIS: Public broadcasting, home theater, etc.;
Audio sharing for all smartphones/headphones/TVS/iot devices.
Project specification:
The maximum speed of the main processor is 208MHz, and the maximum speed of the DSP processor is 416MHz.
Fully compliant with Bluetooth 5.3 specifications;
Low IF structure with high linearity and high order channel filter;
Fully integrated PA delivers 10dBm transmission power;
-96dBm sensitivity, good anti-interference;
Baseband supports dual-mode and isochronous channels.
A maximum of four ACL links can be activated simultaneously.
About Lianda Holdings:
大Lianda Holdings is a leading international distributor of semiconductor components dedicated to the Asia Pacific market. Headquartered in Taipei, it owns Shiping, Pinca, Quan Ding and Yousun. It employs about 5,000 people, represents more than 250 product suppliers, and has 73 distribution locations worldwide, with a turnover of USD 21.55 billion in 2023. Dalianda has created an industrial holding platform, focusing on international operation scale and local flexibility, long-term deep cultivation of the Asia-Pacific market, with the vision of "industry first choice. Channel benchmark", fully implementing the core values of "team, integrity, professionalism, efficiency", and winning the "Global Distributor Excellence Award" for 24 consecutive years. In the face of new manufacturing trends, DDA is committed to transforming into a Data-Driven enterprise, establishing an online digital platform - "DDA network", and advocating the intelligent Logistics as a Service (LaaS) model to help customers jointly face the challenges of intelligent manufacturing. Starting from good intentions and building trust with science and technology, we expect to build a competitive and cooperative ecosystem with the industry "Labang Jie", and actively promote digital transformation with the "focus on customers, technology empowerment, collaborative ecology, and create the era".
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