IT之家 12 月 25 日消息，华为常务董事、产品投资评审委员会主任、终端 BG 董事长余承东今日发布视频，详细介绍了耳机空间音频的技术原理，并透露只 需要在两只耳机中模拟不同的波形变化，就可以让声音出现在任何位置。 据余承东介绍，人的耳廓就是声音重要的方向定位器之一，不同方向的声音撞击到耳廓后会产生波形的变化，人耳捕捉到这个变化就能定位声音的位置。华 为声学实验室采集了上千组人耳相关数据，还研发出了空间声场还原算法。 IT之家从华为官网获悉，华为 FreeBuds Pro 5 / 4 / 3 / 2 系列、FreeClip 1 / 2、FreeBuds 7i、FreeBuds 6、FreeBuds 5 等耳机支持 Audio Vivid 三维声标准，采用 华为自研的场景化空间音频声场渲染引擎，可提供有声剧场、电影院、音乐厅三种空间音频音效模式。 另外，华为 FreeArc / FreeBuds 6i 耳机支持空间音效。据介绍，空间音效和空间音频均采用华为自研渲染引擎，经过声学定位技术渲染和空间渲染提升空间 感；均会针对当前耳机，单独调教声学参数，但空间音效不支持头部跟踪效果和切换空间场景。 IT之家 12 ...

Group 1 - Apple's WWDC25 did not exceed market expectations, resulting in a stock price drop of 1.21% and a loss of approximately 364 billion USD in market value [1][2] - Apple refrained from making new AI commitments during the event, opting instead to integrate AI features into various operating systems without clear timelines for releases [1][2][24] - The main highlight of Apple's WWDC25 was a significant UI design update, introducing a "liquid glass" aesthetic, which has received mixed reactions from users [14][16][21] Group 2 - Huawei quickly followed Apple's event with its own Pura 80 series launch, introducing seven new hardware products, including four smartphones and other devices [2][6] - The Pura 80 series features advanced camera technology and is priced starting from 6499 RMB, with the highest model at 9999 RMB [4][6] - Huawei's products are integrated with AI functionalities, such as real-time translation and voice interaction, showcasing a strong focus on hardware and ecosystem connectivity [6][8][10] Group 3 - Huawei's strategy includes frequent product launches, with an average of seven new smart hardware products introduced at each of its 18 events over the past three years [12][13] - The emphasis on "full scene" product launches indicates Huawei's rapid expansion in its ecosystem and product offerings [13] - In contrast to Apple's more software-focused updates, Huawei's approach is hardware-centric, aiming to capture market share and innovate in AI integration [10][27]

Group 1: Market Overview - The Shanghai Composite Index closed at 3370.02 points with a slight increase of 0.15% [2] - The Shenzhen Component Index closed at 10695.48 points, up by 0.07% [2] - The total trading volume across the markets reached approximately 5867.45 billion yuan [2] Group 2: Industry Insights - The social service industry is seeing a positive outlook with Huazhu Group's 2025 guidance indicating stable or recovering RevPAR, planning to open 2300 new hotels [11] - The public utility and environmental protection sector reported a 1.3% year-on-year increase in total electricity consumption, amounting to 1.56 trillion kWh [14] - The household appliance sector experienced a 10% growth in retail and export in January-February, with air conditioning production expected to rise over 10% in April [25][27] Group 3: Company Performance - E-Hang Intelligent reported a 190% year-on-year revenue growth in the fourth quarter, indicating promising commercial operations [5] - Tencent Holdings is highlighted for its deep dive into AI applications and IP development, maintaining a positive long-term outlook [5] - The financial performance of Mingchuang Youpin showed a 22.8% increase in annual revenue for 2024, with improving profitability in overseas markets [5] Group 4: Investment Strategies - The public utility sector is recommended for investment, particularly in large thermal power companies and renewable energy leaders [16] - The automotive industry is advised to focus on companies like Li Auto, which is advancing its next-generation autonomous driving architecture [29] - The media and internet sector is encouraged to explore opportunities in AI applications and high-demand IP sectors, with specific recommendations for companies like Pop Mart [20]