Huawei FreeBuds Pro 3 makes a shocking debut: Starlight headphones lead a new audio experience, equipped with Kirin A2 chip and full-link lossless audio technology

The release of Huawei FreeBuds Pro 3 means that the saying "Bluetooth headphones ring" will no longer apply

On September 25, at Huawei's autumn full-scenario new product launch conference, Huawei's new The first-generation acoustic flagship product - Huawei FreeBuds Pro 3 is officially unveiled.

Huawei FreeBuds Pro 3 This headset uses the audio chip Kirin A2 that supports Polar code technology, making it a "star flash headset" . It provides 1.5Mbps lossless audio transmission, making the TWS industry officially enter the lossless era

As we all know, the basic workflow of wireless headsets is to first encode and compress the sound information, and then transmit it to the headset through Bluetooth, and then the headset then Decoding and playing sound information is the so-called "encoding and decoding" process.

The encoding and decoding process involves the "loss amount" of sound source information, which is closely related to the final sound quality performance and is an important factor that affects wireless The key factor of audio quality, so what we call "lossless sound quality" and "lossy sound quality" refers to this

TWS headphones have been unable to achieve true "lossless" sound quality for a long time. This is because of their audio The transmission protocol cannot meet the audio codec standard required for CD-level lossless music transmission bit rate (1.41Mbps). Therefore, no matter how much algorithm optimization is performed, the sound quality of TWS headphones can never be compared with that of wired headphones

The reason why Huawei FreeBuds Pro 3 can achieve true 1.5Mbps lossless audio transmission is that it supports the new L2HC 3.0. The new L2HC standard just released in Japan expands the audio transmission bit rate to 64K~1920Kbps and supports 96kHz/24bit high-definition audio transmission. This is my country's latest high-definition wireless audio codec standard, and it is also a protocol that can achieve super-CD-level lossless sound quality.

It should be added that Huawei is a core contributor in the formulation of L2HC standards. As early as 2022, Huawei FreeBuds Pro2 has been equipped with Huawei L2HC 2.0 and achieved a full-link high-definition sound quality experience. This generation of FreeBuds Pro 3 achieves full-link lossless sound quality through L2HC 3.0.

The second core advantage of Huawei FreeBuds Pro 3 is the support of Kirin A2 chip.

Kirin A2 is an audio chip launched by Huawei that supports Polar code technology. It has core advantages such as fast transmission, low power consumption, high performance, and high integration.

Specifically, the Kirin A2 chip integrates dual DSP processing units, and the computing power performance is 2 times higher than that of the Kirin A1 chip; the overall PCB size Compared with Kirin A1, it is 20% smaller, which also reduces the overall weight of FreeBuds Pro 3 by 5%. Its low power consumption is 50% lower than the previous generation, achieving longer battery life.

Of course, these are not the most important. What is exciting is that Huawei’s short-range and acoustic experts have brought together the latest innovations in the field of mobile communications. Polar code technology and the core technology of StarLight connection are applied to the Kirin A2 chip.

Regarding Polar codes, here is a simple popular science:

Polar codes are a coding technology that has been theoretically proven to reach the limit of Shannon theory, and is also adopted by the 5G standard. use. Huawei began relevant research in 2009, the second year after the polar code was discovered. After years of hard work, the polar code promoted by Huawei has been recognized by the industry and has become the 5G NR control channel coding solution

Benefitting from the extremely low complexity, low latency and strong anti-interference characteristics of the polar code capabilities, Huawei began to introduce Polar codes into Bluetooth communications in 2019.

Star Flash is a new generation of wireless short-range communication technology. One of its core technologies is the Polar code physical channel coding algorithm

Therefore, the Kirin A2 chip has become the audio processor equipped with Polar code applications. chip. According to the official description, it provides 6dB anti-interference capability, which doubles the anti-interference capability of audio Bluetooth transmission, doubles the transmission distance, and saves 40% of power consumption. Relying on Polar code technology, the audio transmission bit rate of FreeBuds Pro 3 stably reaches 1.5Mbps, achieving true super CD-level lossless sound quality

In addition to lossless sound quality, Huawei FreeBuds Pro 3 also brings new Silent Call 2.0 and Smart Dynamic Noise Reduction 3.0 thanks to the powerful computing power of the Kirin A2 chip.

Specifically, due to Kirin A2’s dual DSP audio processing unit, the audio computing power is more powerful, able to support larger amounts of data, and operate through more complex multi-channel neural network algorithms. In this way, the vocal band and full-band audio signals can be processed separately and then dynamically fused, allowing users to obtain an excellent call noise reduction experience in any environment

Kirin A2 has been fully upgraded with the support of powerful computing power and introduced Huawei’s self-developed hearing optimization algorithm. This algorithm realizes real-time optimization of triple hearing senses, can match the volume, ear structure and wearing status in real time according to the actual situation, and comprehensively optimize the wearer's hearing experience. At the same time, it can also adjust EQ, and combines three modes of noise reduction and real-time noise reduction technology to provide users with a personalized noise reduction experience

Huawei FreeBuds Pro 3 also adds Spatial Audio 2.0, which uses a self-developed high-resolution spatial model algorithm to reduce latency by 25%, improve dynamic response flatness by 25%, and improve resolution accuracy by 40%. °, so that the user's spatial perception is fully upgraded

Finally, it is the new smart experience brought by HarmonyOS 4, including the offline search function ring Search, intelligent forgotten reminder and other functions, as well as a series of powerful functions such as audio service card, full-scenario super terminal, audio connection center, audio sharing, smart broadcast and so on. All in all, with the support of Kirin A2, Huawei FreeBuds Pro 3 has achieved an all-round upgraded experience in audio, smart interaction, battery life, etc., further enhancing its acoustic flagship positioning.

Written at the end

On the road to promoting the popularization of lossless audio experience, Huawei has once again made a huge leap far ahead of its peers. gap.

Second-rate companies make products, and first-class companies set standards. Huawei FreeBuds Pro 3, as an industry benchmark, empowers the entire audio field through technological innovation and standard setting.

Especially with the support of the Kirin A2 chip base, Huawei FreeBuds Pro 3 brings full-link lossless audio technology. This is why Huawei dares to say that the TWS industry has officially entered the lossless era. Kirin A2, Polar code, L2HC 3.0, these three are indispensable.

Under the leadership of Huawei FreeBuds Pro 3, the entire TWS industry will develop and continue to move forward in the direction of lossless sound quality. It can be expected that the launch of Huawei FreeBuds Pro 3 will further promote sound quality innovation in the streaming media industry. After all, Huawei FreeBuds Pro 3 has achieved true "lossless". With Huawei's influence and appeal, it will also promote the popularization of lossless sound quality in the upstream music industry, ultimately benefiting every ordinary consumer.

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