在 2013年度國際消費(fèi)性電子展(CES)建立了三個(gè)超越新崛起超高分辨率電視(Ultra HDTV，UHDTV)的明顯趨勢(shì)：一是迎合超高分辨率影像的更高品質(zhì)音頻，二是改善智能電視功能導(dǎo)航的語音與視覺技術(shù)演進(jìn)，三是可望實(shí)現(xiàn)Gigabit等級(jí)家庭網(wǎng)絡(luò)的 802.11ac 無線網(wǎng)絡(luò)標(biāo)準(zhǔn)。

CSR CEO Joep Van Beurden

“現(xiàn) 在人們已經(jīng)可以在 UHDTV 上看到高畫質(zhì)影像，對(duì)更高品質(zhì)音頻體驗(yàn)的興趣也因此提升；”CSR CEO Joep Van Beurden預(yù)期，劇院等級(jí)的環(huán)繞音效對(duì)消費(fèi)者來說將會(huì)更加重要：”音頻技術(shù)必須趕上UHDTV?！弊钣锌赡艿氖?，未來音響系統(tǒng)應(yīng)該不會(huì)強(qiáng)迫消費(fèi)者安裝復(fù)雜的5.1聲道設(shè)備，而是只要輕松地添加一個(gè)音箱或是幾個(gè)無線喇叭，就能享受高品質(zhì)音頻。 舉例來說，CSR正在采用apt-X無失真HD音頻編碼技術(shù)，具備96KHz的采樣率以及24位的采樣分辨率。未來市場上預(yù)期將會(huì)有更多的高品質(zhì)音頻解決方案出現(xiàn)。 取代傳統(tǒng)遙控器的新一代電視界面 另 一個(gè)趨勢(shì)是，產(chǎn)業(yè)界正積極尋求新一代電視用戶界面，以取代操作困難、容易遺失的遙控器；CEVA銷售副總裁Eran Briman表示：“人們想要透過語音、視覺或是手勢(shì)與智能電視互動(dòng)。”該公司推出的 MM3101 完全可編程平臺(tái)，就是為了執(zhí)行與影像與視覺相關(guān)的復(fù)雜、實(shí)時(shí)性信號(hào)處理任務(wù)。

Conexant總裁暨CEO Sailesh Chittipeddi

Briman進(jìn)一步指出：“這個(gè)平臺(tái)能讓系統(tǒng)廠 商打造出一個(gè)能總是“聆聽”或“觀察”使用者的接口；”而不是催促你按遙控器的按鈕。日本品牌松下(Panasonic)的新型智能電視就內(nèi)建了一個(gè)小型攝影機(jī)，能辨識(shí)坐在電視機(jī)前的使用者臉部特征，為不同觀眾顯示預(yù)先經(jīng)過個(gè)人化設(shè)定的選單頁面。 在此同時(shí)，Conexant 則推出遠(yuǎn)場語音輸入(far-field voice input)處理器單芯片，可應(yīng)用于機(jī)頂盒或電視機(jī)，讓消費(fèi)者以預(yù)先定義的語音指令開關(guān)電視(該公司在CES的現(xiàn)場展示上所使用的指令是，嘿，Conexant！)Conexant總裁暨CEO Sailesh Chittipeddi表示，該技術(shù)是采用一組算法，包括聲學(xué)回音消除、噪聲抑制、波束成形以及預(yù)/后處理。 本文授權(quán)編譯自EE Times，版權(quán)所有，謝絕轉(zhuǎn)載 本文下一頁：能為電視帶來HD視頻的寬頻網(wǎng)絡(luò)新標(biāo)準(zhǔn)

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{pagination} 因?yàn)橛蠥pple的 Siri 等語音辨識(shí)界面，跟電視說話的這個(gè)點(diǎn)子現(xiàn)在對(duì)使用者來說并不陌生；Broadcom CTO Henry Samueli就表示：“該類技術(shù)已經(jīng)幾乎達(dá)到讓使用者感到自在的程度?！? 而整合語音控制功能不只是電視或是機(jī)頂盒產(chǎn)品的專利，韓廠LG是將語音控制技術(shù)內(nèi)建于其“魔法遙控器(magic remote)”；該公司CTO Scott Ahn表示：”如此一來，就不會(huì)產(chǎn)生電視到底該聽哪個(gè)觀眾命令的困擾?！? 其它廠商將語音控制內(nèi)建于電視機(jī)的原因，則是遙控器常常會(huì)掉到沙發(fā)空隙里找不到；Conexant的Chittipedd表示，遠(yuǎn)場語音輸入技術(shù)能在一個(gè)大范圍、吵雜的房間里執(zhí)行語音觸發(fā)，可提供完美的電視語音控制功能。 能為電視帶來HD視頻的寬頻網(wǎng)絡(luò)新標(biāo)準(zhǔn)

CEVA CEO Gideon Wertheizer

在 網(wǎng)絡(luò)連結(jié)技術(shù)部分，包括 802.11ac 等能將HD視頻帶進(jìn)家庭的較高頻寬網(wǎng)絡(luò)標(biāo)準(zhǔn)，受到服務(wù)供貨商、系統(tǒng)業(yè)者與芯片供貨商高度期待；對(duì)此Broadcom CTO Samueli表示，這讓網(wǎng)絡(luò)服務(wù)業(yè)者首度相信他們可以為家庭用戶提供可靠的HDTV節(jié)目。在這種情況下，營運(yùn)商等級(jí)的視頻內(nèi)容牽涉到可將之分享給機(jī)頂盒、筆電與智能手機(jī)的多媒體網(wǎng)關(guān)器。 CEVA CEO Gideon Wertheizer 強(qiáng)調(diào)，802.11ac不只是家庭網(wǎng)絡(luò)標(biāo)準(zhǔn)，也將成為蜂窩通信網(wǎng)絡(luò)的小型基站必備功能：“電信營運(yùn)商希望藉由Wi-Fi來分擔(dān)通信網(wǎng)路流量。” CEVA正在與無線技術(shù)專家Antcor 合作，在其CEVA-XC4000提供以軟件為基礎(chǔ)的多標(biāo)準(zhǔn)Wi-Fi解決方案，讓W(xué)i-Fi接取點(diǎn)、路由器、網(wǎng)關(guān)器與小型基站可支持802.11ac 標(biāo)準(zhǔn)。 本文授權(quán)編譯自EE Times，版權(quán)所有，謝絕轉(zhuǎn)載 編譯：Judith Cheng 參考英文原文：To-do list beyond UHDTV: Audio, voice, connectivity，by Junko Yoshida

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{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.