在 2013年度国际消费性电子展(CES)建立了三个超越新崛起超高分辨率电视(Ultra HDTV，UHDTV)的明显趋势：一是迎合超高分辨率影像的更高品质音频，二是改善智能电视功能导航的语音与视觉技术演进，三是可望实现Gigabit等级家庭网络的 802.11ac 无线网络标准。
CSR CEO Joep Van Beurden |
“现 在人们已经可以在 UHDTV 上看到高画质影像，对更高品质音频体验的兴趣也因此提升；”CSR CEO Joep Van Beurden预期，剧院等级的环绕音效对消费者来说将会更加重要：”音频技术必须赶上UHDTV。”最有可能的是，未来音响系统应该不会强迫消费者安装复杂的5.1声道设备，而是只要轻松地添加一个音箱或是几个无线喇叭，就能享受高品质音频。
举例来说，CSR正在采用apt-X无失真HD音频编码技术，具备96KHz的采样率以及24位的采样分辨率。未来市场上预期将会有更多的高品质音频解决方案出现。
取代传统遥控器的新一代电视界面
另 一个趋势是，产业界正积极寻求新一代电视用户界面，以取代操作困难、容易遗失的遥控器；CEVA销售副总裁Eran Briman表示：“人们想要透过语音、视觉或是手势与智能电视互动。”该公司推出的 MM3101 完全可编程平台，就是为了执行与影像与视觉相关的复杂、实时性信号处理任务。
Conexant总裁暨CEO Sailesh Chittipeddi |
Briman进一步指出：“这个平台能让系统厂 商打造出一个能总是“聆听”或“观察”使用者的接口；”而不是催促你按遥控器的按钮。日本品牌松下(Panasonic)的新型智能电视就内建了一个小型摄影机，能辨识坐在电视机前的使用者脸部特征，为不同观众显示预先经过个人化设定的选单页面。
在此同时，Conexant 则推出远场语音输入(far-field voice input)处理器单芯片，可应用于机顶盒或电视机，让消费者以预先定义的语音指令开关电视(该公司在CES的现场展示上所使用的指令是，嘿，Conexant！)Conexant总裁暨CEO Sailesh Chittipeddi表示，该技术是采用一组算法，包括声学回音消除、噪声抑制、波束成形以及预/后处理。
本文授权编译自EE Times，版权所有，谢绝转载
本文下一页：能为电视带来HD视频的宽频网络新标准
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因为有Apple的 Siri 等语音辨识界面，跟电视说话的这个点子现在对使用者来说并不陌生；Broadcom CTO Henry Samueli就表示：“该类技术已经几乎达到让使用者感到自在的程度。”
而整合语音控制功能不只是电视或是机顶盒产品的专利，韩厂LG是将语音控制技术内建于其“魔法遥控器(magic remote)”；该公司CTO Scott Ahn表示：”如此一来，就不会产生电视到底该听哪个观众命令的困扰。”
其它厂商将语音控制内建于电视机的原因，则是遥控器常常会掉到沙发空隙里找不到；Conexant的Chittipedd表示，远场语音输入技术能在一个大范围、吵杂的房间里执行语音触发，可提供完美的电视语音控制功能。
能为电视带来HD视频的宽频网络新标准
CEVA CEO Gideon Wertheizer |
在 网络连结技术部分，包括 802.11ac 等能将HD视频带进家庭的较高频宽网络标准，受到服务供货商、系统业者与芯片供货商高度期待；对此Broadcom CTO Samueli表示，这让网络服务业者首度相信他们可以为家庭用户提供可靠的HDTV节目。在这种情况下，营运商等级的视频内容牵涉到可将之分享给机顶盒、笔电与智能手机的多媒体网关器。
CEVA CEO Gideon Wertheizer 强调，802.11ac不只是家庭网络标准，也将成为蜂窝通信网络的小型基站必备功能：“电信营运商希望藉由Wi-Fi来分担通信网路流量。” CEVA正在与无线技术专家Antcor 合作，在其CEVA-XC4000提供以软件为基础的多标准Wi-Fi解决方案，让Wi-Fi接取点、路由器、网关器与小型基站可支持802.11ac 标准。
本文授权编译自EE Times，版权所有，谢绝转载
编译：Judith Cheng
参考英文原文：To-do list beyond UHDTV: Audio, voice, connectivity，by Junko Yoshida
相关阅读：
• 三个理由告诉你4K2K电视离普及还差十万八千里
• CES2013落幕：下一个明星产品是…
• CES2013：夏普对电视不离不弃，超高清价格门槛难逾越bRDesmc
{pagination}
To-do list beyond UHDTV: Audio, voice, connectivity
Junko Yoshida
Despite the hoopla over Ultra HDTV at CES,
three unmistakable trends have emerged, and consumer electronics companies are busy addressing them.
LAS VEGAS – The International Consumer Electronics Show last week established three unmistakable trends beyond the emergence of Ultra HDTV: the rise of better audio to keep up with ultra HD images; advances in voice and vision technology to improve navigation on smart TVs; and the emerging 802.11ac, which will set the stage for gigabit data communication in the home.
“Now that they’ve seen images jumping out of UHDTV, people are more interested in better audio experience,” said CSR CEO Joep Van Beurden. (right). Cinema-like, surround-sound audio will become much more important to consumers, Van Beurden predicted. “Audio must keep up with UHDTV.” Most likely, sound systems will be implemented not by forcing consumers to wire up a complex 5.1 channel setting but by simply adding a sound bar or a few wireless speakers running high-quality audio.
CSR, for example, is adopting apt-X Lossless HD audio coding technology, capable of up to 96 KHz sampling rates and sample resolutions up to 24 bits. Expect more audio solutions to spring up on the market, all aimed at HD audio.
Natural User Interface
The industry is also scrambling to find a better user interface beyond hard-to-use and easy-to-misplace remote controls. “People want to interact with smart TVs with voice, vision and gesture,” said Eran Briman, vice president of marketing at CEVA. CEVA is rolling out a fully programmable platform dubbed MM3101 specifically designed to perform complex, real-time signal processing tasks related to imaging and vision. “This allows system companies to build a user interface that’s always ‘listening’ to you, or ‘watching’ you,” said Briman, instead of prompting you to push a button.
A tiny camera integrated into Panasonic’s new smart TV, for example, recognizes the face of a user sitting in front of the TV and changes the user interface to one pre-defined for that face.
Conexant, meanwhile, is touting its far-field voice input processor SoC. The chip, when designed into a set-top box or TV, allows consumers to speak a pre-defined command (in its demo, the company used, “Hey, Conexant!”) to turn a TV on or off.
Sailesh Chittipeddi, president and CEO at Conexant Systems Inc. (left), said it is leveraging a suite of algorithms, including acoustic echo cancellation, noise reduction, beam forming as well as pre- and post-processing.
The idea of talking to TV is no longer foreign to users. More are accustomed to voice recognition-based services like Apple’s Siri. “The technology has almost gotten to the point with which people are feeling comfortable,” said Henry Samueli, CTO of Broadcom.
Integration of voice-control functions is feasible either inside a remote unit or in a TV or set-top. LG CTO Scott Ahn said voice control will reside in LG’s new "magic remote," so “there will be no confusion as to whose commands the TV must listen.” Others advocate voice control inside the TV because remotes often get lost between the couch cushions. “Far-field voice input technology – that works on a voice trigger even in a large, noisy room – will be perfect for that,” claimed Conexant's Chittipeddi.
802.11ac push
Meanwhile, higher bandwidth connections such as 802.11ac designed to bring HD video to the home, are generating high expectations among service providers, system companies and chip suppliers.
Broadcom CTO Samueli said this is “the first time carriers are convinced that they can deliver reliable HDTV programming throughout the home.” In this scenario, carrier-grade video content comes to a media gateway that distribute it to set tops, notebook computers and smartphones.
CEVA’s CEO Gideon Wertheizer (left) stressed that 802.11ac isn’t just for home networking. It’s also becoming a critical requirement for small cells in cellular networks. The 802.11ac spec will be an important feature for small cells, whose chips are designed by companies like Mindspeed and Cavium.
“Operators want to offload traffic by using Wi-Fi,” observed Wertheizer. CEVA, working with wireless specialist Antcor, is offering software-based multi-standard Wi-Fi solution on its CEVA-XC4000. The two companies are enabling 802.11ac in Wi-Fi access points, routers, gateways and small cells.
OpenCV
Triggering a proliferation of natural user interface devices is the availability of OpenCV, a standard library of programming functions for computer vision processing.
CEVA is leveraging the ready-to-use library, optimizing it with CEVA’s C-level compiler for the CEVA-MM3101 imaging and vision platform. While CEVA is already working with eyeSight to enable gesture control that supports multiple hand gestures, palm detection and tracking on its MM3101 platform, the company also announced during CES a partnership with iOnRoad to enable an advanced driver assistance system on the MM3101.
Of course, CEVA isn’t alone leveraging OpenCV. Qualcomm is porting OpenCV to ARM’s Cortex A9-based processor. CEVA’s Briman, however, claimed that CEVA’s MM3101 platform can run iOnRoad software at 10 times less power consumption, compared to Qualcomm’s solution.
责编：Quentin
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