The 9th anniversary of Litchi Group: Empowering sound with technology and letting imagination push boundaries

Zijin Finance News on October 17 "When listening to a voice, when all external interference information is removed, the tone and emotion revealed in the voice are difficult to convey in video and text." Lin Jiayi, a 28-year-old veteran of the Lychee App from Suzhou, said. Compared with words, the sense of substitution of sound is stronger, and sound is the medium closest to human emotions.

How to more realistically restore the charm of communicating sounds between people in daily life has always been the focus and difficulty of the audio industry. Apple's main spatial audio function promotes the audio immersive experience The recent fire, in fact, the development of audio is constantly making sound "sound" immersive, eliminating factors that affect the sense of scene such as noise, echo, noise, etc., and then reshaping the sound source and spatial perception according to the real or virtual environment in it.

On October 17, 2022, Litchi Group celebrated its ninth birthday. In the past nine years, the mobile Internet has developed rapidly, and Lychee has also developed from an in-front sound recording tool to a global sound platform integrating audio community, podcast content, sound social, and interactive entertainment. Lizhi has been improving audio technology research for many years, and the support of self-developed technology integrated platform "Sound Cloud" is constantly promoting the development of the audio industry.

AI noise reduction while high fidelity

"The goal of Litchi audio processing is two words: quiet - clear and quiet. Let users hear more clearly, more realistically, and better. Liu Xiaoyu, vice president of technology of Litchi Group, mentioned several difficulties to be overcome in audio technology.

With the popularity of online interactive entertainment, the importance of live interactive entertainment scenes has become prominent, while different online scenes have different experience requirements for audio high sound quality. For example, in educational scenarios, the focus is on the acquisition of knowledge and clear and timely interaction of sound; Conference scenarios pay attention to the fluency and clarity of speech; In the entertainment scene, in addition to interesting content to attract users, the audio's high-quality experience and interactive functions are one of the most important factors that make users willing to continue to participate.

Computing power continues to grow, and AI voice noise reduction algorithms based on big data training have powerful capabilities, making real-time AI voice noise reduction algorithms possible in interactive entertainment scenarios. Compared with the traditional noise reduction algorithm, the effect of AI noise reduction developed by the Litchi technical team has been greatly improved, and the noise that may often encounter keystrokes, drinks, background discussions and other noise in live broadcast scenes can be effectively suppressed or even reduced to the lowest impact.

In the sound exploration of Lizhi Group, it has been adhering to a framework and a set of technology stacks, which have laid a solid foundation for the birth of the sound cloud. According to reports, Lizhi's self-developed sound cloud is a comprehensive platform for the integration of various technologies such as real-time audio and video platform DOREME, instant messaging platform VoderX, and hybrid cloud platform iRock, which has the characteristics of large amount of data, large computing power, strong innovation, and can provide systematic full-link solutions with low cost.

The sound platform, represented by Lychee App, is a leading UGC sound content community in China, and its active community atmosphere has attracted countless young people to gather here. As early as 2016, Lychee was the first in the industry to launch a voice platform with voice live broadcast function, and through Lychee's audio processing technology, anchors can do voice live broadcasting anytime and anywhere and interact effectively with the audience. Based on the innovative sound underlying technology, Lychee has also successively launched interactive sections such as "Sound Lab", "Sound Appreciation Card", "Lychee Pie", "Entertainment Game Hall", "Speak with Heart", etc., which greatly enhances the interaction rate between the anchor and the listener, the listener and the listener, so that users can avoid the trouble of typing and experience the social fun brought by sound.

Liu Xiaoyu, vice president of technology of Lizhi Group, introduced that compared with other scenarios, the technical differences in interactive entertainment scenarios are mainly in the aspects of access to different peripherals, support for multiple channels, the needs of voice change, voice understanding, and the improvement of link sound quality. From the perspective of audio experience, it has become a major technical difficulty in the audio industry to allow users to participate in interactive scenes as if they were local, without interference from various surrounding noise inputs.

Multi-terminal layout imagines space amplification: from the Internet of Vehicles to Mars

With the blessing of sound cloud technology, Lychee continues to amplify the sound map, and the scene of sound is also more abundant: from the interactive social of sound to the on-board end, to the human colonization of Mars claimed by Musk, the multi-scene and multi-terminal imagination of social networking has been continuously excavated. Litchi also believes that the next generation of communication is a more real-time voice, more cross-terminal, more technology-based communication.

Under the trends of Web 3.0 and IoT, the development of the sound economy has greater possibilities and imagination in the world. As one of the strategic layouts of the Group, Litchi actively implements the multi-terminal layout, promotes relevant in-vehicle audio cooperation through self-developed technology and innovative products, promotes the application of in-vehicle audio products in diversified scenarios, and meets the diversified in-vehicle entertainment needs of users.

The latest news At the end of September, Lychee Podcast under Lychee Group launched the on-board system of the zero-running car C01 through cooperation with Xiaomi and the fast application platform of Wanxin Automobile. Lychee Podcast App is China's leading podcast product, loved by young people in China, which is due to Lychee Podcast continues to strictly select high-quality content, create exclusive content, and let the user experience the purest podcast world. Based on this, the owner of the C01 car of the zero running car can easily use the Internet audio service and enjoy the rich and high-quality podcast products on the lychee podcast while driving, such as "Beijing Talker", "Aesthetic Commune", "Entrepreneurship Entry into the Sea", "Forensic Qin Ming" and other high-quality podcasts.

Zhang Yi, CEO and chief analyst of Ai Media Consulting, believes that online audio carriers are not limited to computers, mobile phones and other terminals, but also smart cars, wearable devices, smart homes, robots, etc. have also become the media for online audio. With the rapid development of the Internet of Vehicles, the connection between the online audio industry and automakers will only become closer. Relying on the richness of its content, the accuracy of distribution, and the innovation of interaction, in-vehicle audio is ushering in a window period of large-scale outbreak.

Lychee's person in charge of the car business said, "Podcast is the most suitable application in the car scene. We believe that new energy vehicles will develop rapidly in the next few years and become a very important scene in the podcast industry. ”

To be able to steadily advance the on-board layout, Lychee's competitiveness in in-vehicle audio technology is the key. According to the relevant person in charge of Litchi Technology, at present, the main thing to do is to adapt to the car machine, and the cooperation with the Internet of Vehicles is mainly to meet the requirements of the Internet of Vehicles system before landing. "On the content side, Litchi's positioning is lightweight, young, interesting, personalized, self-developed audio technology solution DOREME, coupled with AI-driven recommendation engine, can achieve personalized listening experience for users."

The above-mentioned person in charge also mentioned that before the audio products of Litchi are settled in each car company (Internet of Vehicles), in addition to their own selected content, they will also communicate the user portraits of the car owners to the car companies, so that the most appropriate content can be given to the car end of different brand models. "At present, the content category is still dominated by pan-entertainment podcasts. The in-vehicle listening time and user volume have shown a good growth trend. ”

Under the New Mission Vision: Sound Innovation is still a teenager

Professor Guo Quanzhong of the School of Journalism and Communication of Minzu University of China believes that the interaction of people's Internet life from the beginning of mouse clicks, to the interaction of fingers on mobile phone screens in the mobile era, to social interaction represented by sound, sound social interaction entertainment has a very good and broad market prospect and imagination.

Liu Xiaoyu, vice president of Lizhi Technology, concluded that with the advent of the metaverse, users have higher and higher requirements for sound quality and immersive experience, and the effect of accessing devices, low latency, spatial audio technology, environmental acoustic simulation, etc., are all difficulties that need to be overcome by audio interactive entertainment. Lizhi's technical team is constantly striving forward to continue to promote China's Internet audio social technology in the world's leading position.

On the occasion of its ninth anniversary, Litchi released a new mission vision: to create the world's largest sound platform to help people connect with each other with sound, communicate more closely and live happier lives. To achieve this goal, technology is indispensable. With the advent of the new era of sound, users have higher and higher requirements for sound quality and immersive experience, and the effect of accessing devices, low latency, spatial audio technology, environmental acoustic simulation, etc., are the difficulties that audio interactive entertainment needs to overcome.