Speech Interface Concerns
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Vol. 27, No. 9 u hansenreport.com u November 2014 Wireless Device Speech Interface Concerns Charging Not Yet Last month the American Automobile synthetic/computerized voices and pre- Association’s (AAA) Foundation for Traffic recorded natural human voices. Mainstream Safety issued phase two of its report, Mea- u Siri, the natural language interface suring Cognitive Distraction in the Automobile. developed by Apple, “had the lowest rating Wireless device charging was the fourth Among its conclusions are these: of intuitiveness and the highest rating of most-wanted automotive feature in the J.D. u Voice-based interactions in the vehicle complexity of any of the conditions tested. Power 2014 U.S. Automotive Emerging Tech- may have unintended consequences that … [Its] idiosyncrasies resulted in overly nologies Study. Sixty-six percent of U.S. con- adversely affect traffic safety. complex interaction.” The system tested sumers said they “definitely” or “probably u Confirming what was learned in was customized to be completely hands- would” buy a wireless charging station phase one of the study, composing emails and eyes-free. priced at $75 retail. Despite its appeal, or text messages by voice demands a mental wireless device charging is offered on only a workload more than three times greater Texting by Voice Not Recommended few Toyota and Chrysler car models and than the single task of driving. It is clear to everyone that manually on three 2015 Cadillacs: the ATS, CTS u Comparing six OEM voice-based info- texting while driving is a very dangerous and Escalade. tainment systems—five from model year activity, so carmakers have been exploring Wireless charging in automotive has two 2013 and one from model year 2012—re- ways to let drivers text using speech-to-text big hang-ups: The industry has not yet co- searchers found “striking differences in the technology. Nuance, the leading provider alesced around a single charging specifica- cognitive demand incurred through voice of speech interface solutions for carmakers, tion and not enough devices are sold that interactions with different OEM voice- asserts that if texting doesn’t involve visual provide the feature. Qi, the standard devel- based systems.” Of the six systems, Toyota or manual distractions, it is no more dis- oped and promoted by WPC (Wireless Entune was the least cognitively demand- tracting than controlling anything else in Power Consortium), and the PMA (Power ing. Chevrolet MyLink was the most de- the car with speech. But, says AAA, “We Matters Alliance) standard, are the two that manding. (See chart below.) now have evidence to appeal to the public have the most traction among carmakers. u Issuing simple commands such as ad- to not use these voice-to-text features while Both are designed to support inductive justing the climate controls is about as cog- their vehicles are in motion.” charging technology as the means to trans- nitively distracting as listening to an audio Bryan Reimer, a research scientist at the fer energy from the charger to the device book: 1.75 times more distracting than the Massachusetts Institute of Technology via inductive coils. The transmitting coil is single task of driving. AgeLab and a leading authority on the au- part of the charging pad; the receiving coil u Speech technologies have advanced to tomotive speech interface, agrees that text- is part of the smartphone or other device. the point where there is no difference in ing by voice while driving is not a good While both are inductive charging stan- mental workload between listening to idea. “Text messaging or using social media dards, they have their differences. “The is not stuff we need to be differences between WPC and PMA have doing in the vehicle right Cognitive Workload of Six OEM Voice-Based Systems not yet been resolved,” said Jeff Schroeder, now. The problem is, all Compared with Single Task of Driving a portfolio manager for Visteon. “They are the work we have done still in competition. Everybody in the in- with voice interfaces sug- dustry realizes that that is an inhibitor to gests that there are fre- adoption and would like the difference to quently visual demands disappear, but I see no resolution in sight.” associated with the voice Fifty-two phone models from Samsung, interaction. You speak, you Motorola and Nokia, among other makers, look at a display to confirm are Qi Ready, meaning wireless charging your words were under- capability that conforms to the WPC speci- stood. What happens if fication is integrated in the phone. Only you remove that visual two phone models from Kyocera come feedback? All I can tell you with integrated charging that conforms to is with any of the speech the PMA specification. PMA charging is systems I’ve worked with, Baseline Toyota Hyundai Chrysler MyFord Mercedes Chevy done via charging cases or the Powermat Entune Blue Link Uconnect Touch COMAND MyLink even those on our smart- phones that are highly Turn to Charging, page 2 Source: AAA Turn to Speech, page 3 The Hansen Report on Automotive Electronics, www.hansenreport.com Page 1, November 2014 Charging… Continued from page 1 Ring, accessories that are sold separately. multiple devices to be charged at the same Three Competing Standards For example, PMA Duracell Powermat of- time. fers a wireless charging case for the Before it is adopted by the automotive Wireless Power Consortium (WPC), Qi iPhone5. Thus far no industry, a number of issues with magnetic Qi has the widest support among phone makers and carmakers. The CE4A consortium of five iPhones come with integrated charging that resonance charging such as electromagnetic German carmakers recommended this inductive conforms to either specification. compatibility and whether or not the tech- charging standard in September 2013. Toyota, While GM is a strong backer of the nology poses health risks need to be ad- Chrysler and GM offer a few models with wire- PMA standard, Visteon’s wireless charging dressed. The Alliance for Wireless Power less charging based on Qi. Fifty phone models system for Cadillac is compatible with both (A4WP) is promoting a standard based on are Qi Ready, not including Apple iPhones. WPC PMA and WPC standards. “The coil con- magnetic resonance. In February 2014, was the first to issue transmitter specifications. figuration [between the coil in the car that A4WP and PMA agreed to establish in- Power Matters Alliance (PMA) transmits the energy and the coil in the teroperability of these two wireless power The PMA was founded in 2012 by Proctor & device that receives the energy] to support standards. The A4WP’s next spec is due at Gamble and Powermat Technologies. GM is an each standard is similar,” said Sam Khoury, the end of 2014. investor in Powermat Technologies. AT&T, Dura- a business development manager at Vis- Delphi, which is a member of all three cell and Microsoft are members of the PMA. teon. “We are able to detect whether the alliances, A4WP, PMA and WPA, said it is Powermat charging stations are located in Star- device being charged is WPC or PMA com- offering a device charging system that con- bucks and McDonald’s stores. Three 2015 Cadil- lac models offer a wireless charging system patible and apply that software. … The forms to the three specifications. “Reso- based on Powermat, but which also supports Qi RFQs we are receiving from carmakers in- nant technology can enhance the user phone charging. For most devices, a charging dicate that both standards should be sup- experience by offering more positional free- case or other external interface to the phone is ported.” dom,” said George Powell, global product required. PMA is an inductive charging standard. A second approach, magnetic resonance manager for wireless charging at Delphi. charging, which transfers power between “We see a trend toward that technology in Alliance for Wireless Power (A4WP) A4WP is the de facto standard for resonant wire- two inductors that are tuned to the same both the consumer and automotive mar- less charging, which can charge at a greater natural resonant frequency, allows charging kets. In the next couple of years, there is range than inductive charging. A4WP members from a greater distance, offering an alterna- going to be a lot of activity and technology include Samsung, Qualcomm, Broadcom, Intel, tive to non-resonant inductive charging. merging and that will lead to more wide- Renesas, Texas Instrument, Denso, Delphi and More power can be transferred, allowing spread acceptance of our products.” u Visteon. In February 2014 the A4WP and PMA signed an agreement aimed at establishing in- teroperability between their two standards. Good Times for Automotive Electronics Suppliers Serving U.S. Markets © 2014 Paul Hansen Associates, 150 Two of the main components for auto- year. Between 2009 and 2014 they expand- Pinehurst Road, Portsmouth, NH 03801 motive electronics market growth in the ed at 2.9% per year. Given the current USA. Telephone: 603-431-5859; fax: 603- United States—unit sales of light vehicles SAAR (seasonally adjusted annual rate) 431-5791; email: [email protected]. and retail sales prices for those new vehi- projections, U.S. light vehicle sales will All rights reserved. cles—are up significantly. Growth in auto- reach 16.4 million in 2014, an increase of Materials may not be reproduced in motive electronics is constrained by the 9.5% annually since 2009, which was a par- any form without written permission. need to keep new vehicle transaction prices ticularly difficult year for the automotive The Hansen Report on Automotive low enough to attract buyers. From 2000 to industry at the peak of the recession. Electronics is published ten times a year at 2010, retail prices grew at just 2.1% per www.hansenreport.com.