Oppo enco x officially launched voice plus technology three microphone voice noise reduction scheme upgraded

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 Oppo enco x officially launched voice plus technology three microphone voice noise reduction scheme upgraded


At the same time, in terms of call noise reduction, oppoencox adopts the three microphone noise reduction scheme of sound plus technology, a technology company in the field of intelligent hearing. Each headset has three built-in high-sensitivity microphones, which can effectively reduce the call noise and make the voice heard by the other more clear and pure. It improves the use experience of TWS earphones and creates a new benchmark for true wireless noise reduction earphones.

Three microphone call noise reduction - quiet call anytime, anywhere

Sound processing technology patent technology sve3100p three microphone call noise reduction algorithm, multiplexing ANC feedback microphone combined with dual microphone array to achieve adaptive environmental noise elimination. The external dual microphone array can locate the users voice and external environment interference in real time, and the internal microphone can collect the users voice transmitted by bone conduction path to avoid the influence of wind noise and noisy environment.

Comparison of SVE before and after opening (18km / h wind speed)

More clear, more comfortable and more free: multiple core technologies can accurately suppress noise, and can be used in multiple scenes without fear of interference

It is understood that SVE (soundplus voice enhancement) AI noise reduction technology of sound processing technology can be widely used in earphone, semi in ear earphone, in ear earphone, headset, hanging earphone, etc. through microphone array, the speakers speaking position can be accurately calculated, and various interference noises in the environment, such as other people, can be removed while protecting the target voice in the main direction It can effectively suppress 90% of the reverse environmental noise, thus reducing the environmental noise up to 30dB and ensuring high-quality communication effect. No matter what kind of noisy environment the users are in, they can chat in detail without fear of interference. Its core technologies include:

Local command: it uses deep neural network to extract speech features, supports accurate recognition of multiple command words / wake-up words, with extremely low resource consumption, and can be applied to wearable intelligent devices such as headphones, bracelets, watches, etc.

Echo cancellation AEC:

Use echo cancellation technology to eliminate loudspeaker signal leaking into microphone (widely used in earplug / semi in ear TWS earphone).

At the same time of protecting the target speech in the main direction, all kinds of interference noises in the environment are removed, such as the voice of other people, the noise of vehicles and wind noise, etc.

Through the low-power always on environment detection algorithm, the best ANC effect is maintained in different noise environments; the active noise reduction parameters are adjusted according to the outdoor wind noise scene to ensure the noise reduction performance in the outdoor wind noise environment.

Virtual stereo:

Through a pair of headphones, you can enjoy the sound effect produced by the stereo system composed of two speakers. It can accurately reproduce the listening experience produced by the correctly positioned and adjusted stereo speaker system, and eliminate the hearing fatigue often seen in headphone appreciation (widely used in game headphones).

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Combining the bone conduction signal detected by Vpu with the air conduction signal detected by microphone, high quality speech signal can be extracted in strong noise environment.

Bone voiceprint ID detection (G-sensor): using G-sensor to detect the vibration (bone conduction) signal produced by the wearer when speaking, and combining with keyword / command word detection technology, it can realize low-power wake-up of TWS headset and command word detection of specific speaker;

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The feedback microphone of ANC is used to collect high signal-to-noise ratio speech signal in the ear canal. After echo cancellation, it is combined with the air conduction signal detected by microphone to extract high-quality voice signal in strong noise and strong wind environment.

Full scene solution: more than ten million authorized terminals have been authorized for many star products of large factories

Founded in January 2018, sound plus technology focuses on the core technology of communication acoustics. It has passed Zhongguancun high-tech enterprise certification and Beijing high-tech enterprise certification successively. It provides b-end customers with near-field, midfield and far-field voice interaction technology solutions in complex scenarios, as well as one-stop product solutions from chips, modules, PCBA to industrial design. The team includes not only experts in the research field, but also professional managers with rich experience in the field of industry and audio. The main R & D personnel are from the Institute of acoustics, Chinese Academy of Sciences, Tsinghua University, Nanjing University and China University of science and technology. Most of the core team members are from the Institute of acoustics, Chinese Academy of Sciences, with an average of more than 15 years of experience in the industry.

With more than ten years of technology accumulation in the field of acoustics and voice, its core technologies such as echo cancellation, noise suppression, sound source localization, reverberation elimination, beamforming, voice wake-up, etc., are well-known in the industry and have been verified by the market. Its partners include Huawei, Xiaomi, oppo, Wanmo, gol, Sogou, kovos, Harman, Anker, hengxuan, KONE, antexin, kenaixin, etc. In addition to oppoencox, sound plus technology has supported communication products and intelligent wearable products including Huawei and glory TWS earphones, Xiaomi TWS headphones, oppotws headsets and other communication products and intelligent wearable products with a number of cutting-edge technologies and competitive solutions in the industry. It has authorized more than 10 million terminal devices. Finally, as a leader and innovator of intelligent hearing, sound plus technology is committed to integrating enc call noise reduction, ANC active noise reduction, sound effect algorithm and other technologies into a whole in complex scenes, providing clearer, more comfortable and more free use experience for human-computer communication and human-machine interaction, and finally realizing the vision of complete human-computer integration. Source: editor in charge of mass news: Chen Tiqiang_ NB6485

With more than ten years of technology accumulation in the field of acoustics and voice, its core technologies such as echo cancellation, noise suppression, sound source localization, reverberation elimination, beamforming, voice wake-up, etc., are well-known in the industry and have been verified by the market. Its partners include Huawei, Xiaomi, oppo, Wanmo, gol, Sogou, kovos, Harman, Anker, hengxuan, KONE, antexin, kenaixin, etc. In addition to oppoencox, sound plus technology has supported communication products and intelligent wearable products including Huawei and glory TWS earphones, Xiaomi TWS headphones, oppotws headsets and other communication products and intelligent wearable products with a number of cutting-edge technologies and competitive solutions in the industry. It has authorized more than 10 million terminal devices.