Shulou(Shulou.com)11/24 Report--

On September 25, Huawei's flagship TWS headset FreeBuds Pro 3 was officially launched at the launch of Huawei's autumn full-scene new products. This product is equipped with the Kirin A2 chip of the new star flash connection core technology (Polar code technology), and it is the industry's first "star flash headset", bringing the industry's unprecedented super CD lossless sound quality and better noise reduction performance.

After the National Day short holiday, a "hard core video" using Huawei FreeBuds Pro 3 to test calls at a rocket launch site attracted the attention of many netizens.

In order to more visually demonstrate the call noise reduction ability of FreeBuds Pro 3, the testers even chose the rocket launch scene. The media in the video wore Huawei FreeBuds Pro 3 to the rocket launch site to test the call noise reduction ability while watching the rocket launch.

In the video, the rocket is launched with a deafening sound. In the face of the roaring rocket, FreeBuds Pro 3 can still capture the voice of the user and transmit it to the other end, so powerful performance that the media teacher who experienced it at the scene was amazed.

Call noise reduction is the touchstone of TWS noise reduction ability. Huawei FreeBuds Pro 3 successfully challenges "rocket launch". At present, noise reduction has become the standard of TWS headset products, but active noise reduction ability is far from enough, call noise reduction is the touchstone of TWS noise reduction ability, the reason is that call noise reduction has always been a difficult problem for the industry to solve.

You know, noise is everywhere in our lives, such as the roar of high-speed trains and subways, the noise of people in amusement parks, shopping malls and tourist attractions, and the wind noise of outdoor sports. and ubiquitous signal interference. As such, talking has become a high-frequency scene when users wear TWS headphones. But in the past, the noise reduction ability of some TWS headphones was limited to the range of "isolating external sound". Once the call was opened, the strong active noise reduction ability would be "ineffective". In the above-mentioned noisy environment, the noise would often cover each other's voice, and the user could not communicate normally at all.

Different from "active noise reduction", behind "call noise reduction" is the test of human voice processing, arithmetic, and comprehensive ability of TWS headphones. Only powerful algorithms and chips are blessed by computing power, the human voice can be accurately "refined" out of the noisy environmental sound, isolating useless environmental noise, so that users can have a pleasant conversation with the other party of the phone in any environment.

Huawei FreeBuds Pro 3's new quiet call 2.0 increases the anti-noise ability of calls by 5 decibels and windproof ability by 80% compared with the previous generation, thus bringing a quiet call experience with a purer human voice. So Huawei FreeBuds Pro 3 can be so calm and relaxed in the face of rocket launch. With Silent call 2. 0, Huawei FreeBuds Pro 3 explains what is meant by the real "strongest call noise reduction TWS headset".

Kirin A2 and quiet call 2.0, creating the "strongest call noise reduction TWS headphones" so how does Huawei FreeBuds Pro 3 achieve such a strong call noise reduction capability? What are the big tricks that support the implementation of Silent call 2.0?

As mentioned above, in order to "purify" the human voice in the noise, we must rely on the powerful computing power of the chip. Thanks to the advanced integration capabilities of Kirin A2, Huawei stuffed a powerful computing chip into a small headphone handle.

Kirin A2, this chip integrates advanced Bluetooth processing unit, powerful dual DSP audio processing unit, ultra-low power application processor and independent power management unit in the compact size of the 7.27*5.2*1.29mm.

The high-performance audio processing unit of Kirin A2 has a powerful computing power of up to 2cm 300m, and its computing performance is two times higher than that of Kirin A1 chip, making real-time processing of high-fidelity audio possible and active noise reduction by 50%.

Kirin A2 has more powerful audio computing power and supports a larger amount of data. through the multi-channel neural network algorithm with more complex operation, the human voice band and full-band audio signals can be processed separately and then dynamically fused. Finally, users can achieve an excellent call noise reduction experience in any environment.

Kirin A2 chip is the power support of Huawei FreeBuds Pro 3 "quiet call 2.0". In order to achieve a few calls noise reduction in the industry, it is inseparable from a series of hardware and software co-design, such as hardware architecture, algorithm, anti-wind noise and so on.

Specifically, in terms of hardware architecture, Huawei FreeBuds Pro 3 uses a highly sensitive bone conduction pick-up microphone, and its pick-up ability is 2.5 times higher than that of the previous generation; in terms of software algorithm, Huawei FreeBuds Pro 3 is equipped with Huawei's self-developed multi-channel deep neural network call noise reduction algorithm, through frequency band training, combined with AI dynamic fusion technology, to retain more human voice details. In terms of anti-wind noise design, Huawei FreeBuds Pro 3 uses a backward call windproof architecture microphone, intelligent anti-wind noise algorithm, and big data's learning and modeling for wind-noisy scenes. In the end, the anti-wind noise ability of calls is improved by 80%. Even the strong wind of 9m/s can ensure barrier-free calls.

In the end, hardware and software work together, even in noisy and complex scenes such as high-speed trains, subways, airports, or strong wind noises such as seaside and cycling, wearing Huawei FreeBuds Pro 3 for voice calls can not only hear each other clearly, but also allow them to hear their own voices.

Intelligent dynamic noise reduction 3.0 + full-link lossless sound quality + HarmonyOS 4 = the most comprehensive strength TWS is also based on the powerful arithmetic power of Kirin A2. Huawei FreeBuds Pro 3 is no longer limited by the fixed noise reduction mode, but brings a combination of three modes of noise reduction and real-time noise reduction, creating a "sound measurement customization" noise reduction experience-intelligent dynamic noise reduction 3.0.

Huawei FreeBuds Pro 3 supports real-time adaptive noise reduction, uses full-time and full-frequency accurate calculation, and customizes its own noise reduction parameters according to different noise environments and users' wearing status. Not only that, compared with the previous generation, Huawei FreeBuds Pro 3 has an average 50% increase in noise reduction in the main living environment noise band of 50Hz-3kHz.

With Wisdom dynamic noise reduction 3.0, Huawei FreeBuds Pro 3 noise reduction is like tailor-made clothes for each user, achieving a true thousand people and thousands of ears.

In addition to the noise reduction of "sound measurement customization", Huawei FreeBuds Pro 3 also supports full-link lossless sound quality-the built-in Kirin A2 chip is the first audio chip with Polar code, which brings the anti-jamming ability of 6dB, doubles the anti-jamming ability of audio Bluetooth transmission, increases the transmission distance by two times, and saves 40% of power consumption. Relying on Polar code technology, the audio transmission rate of FreeBuds Pro 3 runs stably in 1.5Mbps, achieving a real full-link super CD lossless sound quality.

Also upgraded is Spatial Audio 2.0. through the self-developed high-resolution spatial model algorithm, Huawei FreeBuds Pro 3 latency is reduced by 25%, dynamic response flatness is increased by 25%, and resolution accuracy is improved by 40 °, so that users' spatial perception can be fully upgraded.

Finally, there is a new intelligent experience brought about by HarmonyOS 4, including offline search function, ringing search, intelligent drop reminder and other functions, as well as a series of powerful functions such as audio service card, full scene hyperterminal, audio connection center, audio sharing, wisdom broadcast and so on.

Write at the end

Huawei FreeBuds Pro 3 shows the strength of "the strongest call noise reduction TWS headphones" to the industry, but "call noise reduction" is only a part of the comprehensive strength of FreeBuds Pro 3. As a flagship TWS product, with the blessing of Kirin A2 chip, FreeBuds Pro 3 has realized the omni-directional jump of intelligent noise reduction, spatial audio, intelligent interaction and lossless sound quality, achieving the strongest comprehensive strength of TWS products.

The above advantages not only consolidate the positioning of Huawei Acoustics flagship, but also promote the entire TWS industry to move rapidly towards a lossless sound quality revolution. Huawei is constantly empowering the entire wireless audio field with the underlying technological innovation and breakthroughs of TWS.

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