Video: The secret to making hands-free noise-free

 

Explaining a highly technical product to a broad audience is tough. To succeed, you must reach out to people on their own terms, without being condescending. Most people love a good explanation, but everyone hates being talked down to.

Case in point: The QNX Acoustic Processing Suite. This software runs in millions of cars and offers a benefit that everyone can relate to: clear, rich, easy-to-understand hands-free calls. But once you start explaining how the suite does this, it's easy to get mired in technical jargon and to forget the bigger picture — something that even a technical audience wants to see.

So we dropped the jargon and opted for a creative approach. It involves a marching band, a rock guitarist, and, for good measure, an electric fan with a really long extension cord. Seriously.

Intrigued yet? Well, then, grab some popcorn and dim the lights:




Interested in learning more about this technology? Check out the acoustic processing page on the QNX website.

BTW, companies that use the QNX Acoustic Processing Suite in their products include OnStar, whose FMV aftermarket mirror recently won a CES Innovations Design and Engineering Award.

Posted by Paul Leroux
 

Beyond the dashboard: discover how QNX touches your everyday life

QNX technology is in cars — lots of them. But it’s also in everything from planes and trains to smart phones, smart buildings, and smart vacuum cleaners. If you're interested, I happen to have an infographic handy...

I was a lost and lonely soul. Friends would cut phone calls short, strangers would move away from me on the bus, and acquaintances at cocktail parties would excuse themselves, promising to come right back — they never came back. I was in denial for a long time, but slowly and painfully, I came to the realization that I had to take ownership of this problem. Because it was my fault.

To by specific, it was my motor mouth. Whenever someone asked what I did for a living, I’d say I worked for QNX. That, of course, wasn’t a problem. But when they asked what QNX did, I would hold forth on microkernel OS architectures, user-space device drivers, resource manager frameworks, and graphical composition managers, not to mention asynchronous messaging, priority inheritance, and time partitioning. After all, who doesn't want to learn more about time partitioning?

Well, as I subsequently learned, there’s a time and place for everything. And while my passion about QNX technology was well-placed, my timing was lousy. People weren’t asking for a deep dive; they just wanted to understand QNX’s role in the scheme of things.

As it turns out, QNX plays a huge role, and in very many things. I’ve been working at QNX Software Systems for 25 years, and I am still gobsmacked by the sheer variety of uses that QNX technology is put to. I'm especially impressed by the crossover effect. For instance, what we learn in nuclear plants helps us offer a better OS for safety systems in cars. And what we learn in smartphones makes us a better platform supplier for companies building infotainment systems.

All of which to say, the next time someone asks me what QNX does, I will avoid the deep dive and show them this infographic instead. Of course, if they subsequently ask *how* QNX does all this, I will have a well-practiced answer. :-)

Did I mention? You can download a high-res JPEG of this infographic from our Flickr account and a PDF version from the QNX website.



Stay tuned for 2015 CES, where we will introduce even more ways QNX can make a difference, especially in how people design and drive cars.

And lest I forget, special thanks to my colleague Varghese at BlackBerry India for conceiving this infographic, and for the QNX employees who provided their invaluable input.

QNX-powered OnStar FMV drives home with CES Innovation award

Paul Leroux

This just in: The OnStar FMV aftermarket mirror, which brings the safety and security features of OnStar to non-GM vehicles, has won a coveted CES Innovations Design and Engineering Award.

To clinch this award, a product must impress an independent panel of industrial designers, engineers, and trade journalists. Speaking of impressions, it seems that OnStar FMV also made a hit with the folks at CNET, because they've chosen it as one of their Top Holiday Shopping Picks for 2011.

As you may have guessed, OnStar FMV uses QNX Neutrino as its OS platform. It also uses the QNX acoustic processing suite, which filters out noise and echo to make hands-free conversations clear and easy to follow. The suite includes cool features like bandwidth extension, which extends the narrow-band hands-free signal frequency range to deliver speech that is warm and natural, as well as intelligible.

Have time for a video? If so, here's a fun look at FMV's features, including stolen vehicle recovery, automatic crash response, turn-by-turn navigation, hands-free calling, and one-touch emergency calling:


 

Pimp your ride with augmented reality — Part I

The use of electronics is exploding in automotive. Just last week, Intel proclaimed that the connected car “is the third-fastest growing technological device, following smartphones and tablets.”

Ten years ago, you’d be hard-pressed to find a 32-bit processor in your car. Now, some cars have 4 or more 32 bitters: one in the radio, another in the telematics module, yet another in the center display, and still another in the rear-seat system.

Heck, in newer cars, you’ll even find one in the digital instrument cluster — the QNX-powered cluster in the Range Rover, for example. Expect to see a similar demand for more compute power in engine control units, drive-by-wire systems, and heads-up displays.


The Range Rover cluster displays virtual speedometers and gauges, as well as warnings, suspension settings, and other info, all on a dynamically configurable display.

What do most of these systems have in common? The need to process tons of information, from both inside and outside of the vehicle, and to present key elements of that data in a safe, contextually relevant, and easy-to-digest fashion.

The next generation of these systems will be built on the following principles:

• Fully integrated cockpits — Vehicle manufacturers see system consolidation as a way to cut costs and reduce complexity, as well as to share information between vehicle systems. For instance, your heads-up display could discreetly let you know who is calling you, without forcing you to take your eyes off of the road. And it could do this even if the smarts integrating your phone and your car reside in another cockpit component — the telematics module, say.
   
• Augmented reality — With all of the data being generated from phones, cloud content services and, perhaps more importantly, the vehicle itself, presenting the right information at the right time in a safe way will become a major challenge. This is where augmented reality comes in.

Augmented reality is a cool use of cameras, GPS, and data to create smart applications that overlay a virtual world on top of the real world. Here are some of my favorite examples:

AR Starbucks cups — Use your phone to make your coffee cup come alive:



AR Starwars — Blast the rebel alliance squirrels!



AR postage stamp — Add a new dimension (literally) to an everyday object:



And here are a couple more for good measure:

AR ray gun — Blast aliens around the house!

Wikitude AR web browser — Explore the world around you while overlaying social networks, images, video, reviews, statistics, etc.

Stay tuned for my next post, where I will explore how AR could enhance the driving experience for both drivers and passengers — Andrew.
 

Building a hands-free future

The end of my street is governed by a three-way stop. The other morning I was backing out of my driveway when someone rolled past the stop sign and came within inches of hitting me. I stopped, glared at him, and resumed driving. Two stop signs later, the same guy squeezed past my car (in the same lane), completely oblivious to what he was doing.

Why was he driving like this? Probably because he was deeply engrossed in a conversation on his cell phone.

Where I live, using a handset while driving has been illegal for over a year. You cannot talk, you cannot text, you cannot “Facebook”, you cannot Tweet — even if you're stopped at a red light. This makes perfect sense to me. As a driver, your primary responsibility is to control the vehicle. And yet I see people texting on the freeway, talking on their cell phones, and doing who knows what else on an alarmingly regular basis.

The QNX-powered BMW
ConnectedDrive system

Society has become obsessed with mobile devices, and it will take more than legislation to change its behavior. The answer, I think, is to embrace the behavior in a way that makes it possible to interact socially while maintaining control of the car. We’ve seen great progress in hands-free/phone integration, and BMW ConnectedDrive offers an example of how drivers can access email and other smartphone services more safely.

This is the tip of the iceberg. Integrating the handset with the infotainment unit is going to change the way you interact with your car. Intelligently designed apps, combined with multi-modal human machine interfaces, will let you Tweet or update Facebook using speech recognition, keeping your eyes on the road.

Without taking your hands of the wheel, you’ll be able to call a friend and decide that you want to go to dinner, do a local search to find out what’s available, check a restaurant review on Yelp, make a reservation, text your friend back with the time and place, and aim your navigation system at the restaurant. And you’ll be able to do it using natural language. None of this “please say a name” stuff.

Seems futuristic? It’s not. People are working on it today. In fact, QNX-based systems, such as Toyota Entune, already offer a taste of this hands-free and highly personalized future.
 

New release of QNX acoustic processing suite means less noise, less tuning for hands-free systems

Paul Leroux

This just in: QNX has released version 2.0 of its acoustic processing suite, a modular software library designed to maximize the quality and clarity of automotive hands-free systems.

The suite, used by 18 automakers on over 100 vehicle platforms, provides modules for both the receive side and the send side of hands-free calls. The modules include acoustic echo cancellation, noise reduction, wind blocking, dynamic parametric equalization, bandwidth extension, high frequency encoding, and many others. Together, they enable high-quality voice communication, even in a noisy automotive interior.

Highlights of version 2.0 include:

Enhanced noise reduction — Minimizes audio distortions and significantly improves call clarity. Can also reconstruct speech masked by low-frequency road and engine noise.

Automatic delay calculation and compensation — Eliminates almost all product tuning, enabling automakers to save significant deployment time and expense.

Off-Axis noise rejection — Rejects sound not directly in front of a microphone or speaker, allowing dual-microphone solutions to hone in on the person speaking for greater intelligibility.

To read the press release, click here. To learn more about the acoustic processing suite, visit the QNX website.


The QNX Aviage Acoustic Processing Suite can run on the general purpose processor,
saving the cost of a DSP.

 

Wanted: Haunted Vehicles

Halloween is just around the corner, and that reminds me of the haunted room at Lucent Bell Labs. Mind you, it wasn’t really haunted. But for a moment, I was convinced.

Let me explain. As I entered the room, I could hear two of my colleagues talking to each other, and by the sound of their voices, they were both sitting right in front of me. But when I looked, I could see only one person. Creepy, to say the least.

It took a few seconds, but I finally realized what was happening: The other colleague was in a different room, talking over a perfectly tuned prototype of a conference phone. The sense of presence was so real that I couldn’t help but feel we were all in the same room — even after I became aware of the “trick” being played!

It was then that I realized it: We don’t know what we’re missing until we experience it.

Making it real
Current telephone calls don’t sound like face-to-face conversations because the telephone network and terminals band-limit speech from about 50-10000 Hz down to 300-3400 Hz. To make matters worse, the phone’s single channel of audio eliminates spatial information about the sound source. As a result, we perceive most sounds as coming from the same point in space.

But here's the thing: The historical reasons for transmitting these single-channel narrowband speech signals no longer apply. Current technologies — such as wideband speech coders, spatial audio, and VoIP — are enabling speech communications with wider bandwidth speech and greater spatial information.

Many in the industry refer to these next-generation telecommunications systems as telepresence systems. “Telepresence” refers to the degree of realism created by a telecommunications system. Traditional systems have low telepresence while newer systems that use wider bandwidth speech and spatial audio have high telepresence.

Some people believe that a visual display is a must-have for a telepresence system. In reality, a display can decrease telepresence if its quality is poor. Experience shows that an audio-only system can have such high telepresence that people can't distinguish it from face-to-face communications — witness my haunting experience at Lucent Bell Labs.

Until recently, widespread deployment of telepresence systems has hit a roadblock: lack of standardization. Fortunately, the IETF CLUE Working Group and ITU-T Study Groups 16 and 12 are actively developing standards to remedy this situation.

Pimp my ride with telepresence
Telepresence systems have a lot to offer in an automotive environment. For instance, they could:

• reduce driver distraction
• make it easier to understand speech in the presence of vehicle noise
• reduce the fatigue that comes from trying to understand a degraded voice signal

Moreover, a telepresence system makes the talker on the far end of the phone connection sound more like they are in the vehicle; it also makes the talker easier to identify.

Successful deployment of telepresence in an automotive environment depends on several factors:

• attention to the design of vehicle platforms
• use of high-performance acoustic processing algorithms (AEC, NR, etc.), such as those provided by the QNX acoustic processing suite
• the ability to transport telepresence signals between telephony terminals — this is being enabled by increased VoIP availability (via LTE, for instance)

I don't know about you, but I'm looking forward to the day when my vehicle is haunted like that lab in New Jersey!

For additional reading on this topic, download the whitepaper, "Wideband Speech Communications for Automotive: the Good, the Bad, and the Ugly".

 

Attending SAE Convergence? Here’s why you should visit booth 513

Cars and beer don’t mix. But discussing cars while having a beer? Now you’re talking. If you’re attending SAE Convergence next week, you owe it to yourself to register for our “Spirits And Eats” event at 7:00 pm Tuesday. It’s the perfect occasion to kick back and enjoy the company of people who, like yourself, are passionate about cars and car electronics. And it isn’t a bad networking opportunity either — you’ll meet folks from a variety of automakers, Tier 1s, and technology suppliers in a relaxed, convivial atmosphere.

But you know what? It isn’t just about the beer. Or the company. It’s also about the Benz. Our digitally modded Mercedes-Benz CLA45 AMG, to be exact. It’s the latest QNX technology concept car, and it’s the perfect vehicle (pun fully intended) for demonstrating how QNX technology can enable next-generation infotainment systems. Highlights include:

• A multi-modal user experience that blends touch, voice, and physical controls
• A secure application environment for Android, HTML5, and OpenGL ES
• Smartphone connectivity options for projecting smartphone apps onto the head unit
• A dynamically reconfigurable digital instrument cluster that displays turn-by-turn directions, notifications of incoming phone calls, and video from front and rear cameras
• Multimedia framework for playback of content from USB sticks, DLNA devices, etc.
• Full-band stereo calling — think phone calls with CD quality audio
• Engine sound enhancement that synchronizes synthesized engine sounds with engine RPM

Here, for example, is the digital cluster:



And here is a closeup of the head unit:



And here’s a shot of the cluster and head unit together:



As for the engine sound enhancement and high-quality hands-free audio, I can’t reproduce these here — you’ll have come see the car and experience them first hand. (Yup, that's an invite.)

If you like what you see, and are interested in what you can hear, visit us at booth #513. And if you'd like to schedule a demo or reserve some time with a QNX representative in advance, we can accommodate that, too. Just send us an email.

Am I crazy for talking to my car?

Earlier this afternoon, I participated in a connected car panel at SpeechTEK 2012, hosted by our friend Mazin Gilbert from AT&T. The other panelists included Greg Bielby of VoltDelta, Thomas Schalk of Agero, and Hakan Kostepen of Panasonic.

Even though Mazin did a fantastic job, not every panelist had a chance to answer every question. I was itching to answer some, so here are my responses to the questions that I didn't get to answer, or where I feel I could have provided a more complete response.

Have speech technologies matured to the point where they can be used robustly in the car? The general answer to this question from the panel was yes, but I think the real answer is a qualified yes. The technologies exist, but often aren't applied or may need auto-specific adaptations to handle in-cabin noise or other issues. Natural language recognition was an oft-stated driving technology, but a missing piece to the puzzle is hybrid recognition. I don't mean pushing recognition wholesale to the cloud, like Siri does. I mean a true split of the recognition effort, where each part does what it’s best at. Put the front half of acoustic processing in the vehicle to clean up the audio and convert the waveform to frequency-domain data, then send the data to the cloud-based server. The cloud server can then parse and interpret the data, and send back the result.

Hybrid speech rec solves three problems at once: better audio signals (the car can improve audio specific to the in-cabin environment), better cost (frequency data is far more compressed than raw audio, so you pay less for data transfer), and better responsiveness (hybrid rec gives the server time to start working on the response while it's coming in instead of waiting for the whole utterance to finish before starting).

Is driver distraction a major business driver, or is it the "Siri effect"? Currently, the car industry seems to use driver distraction as a reason to push a lot of features into speech. Many of those uses are gimmicky. Personally, I don't care if I can set my climate control system with voice — why would I when I can simply turn a dial? I once had someone ask me about the feasibility of adding voice recognition commands for rolling down the windows. I asked him, "Yes, but wouldn't people just push the window button?"

We shouldn’t implement speech commands just because we can. They may have contributed to excitement in the early adopter crowd, but we're beyond that now. Mind you, there are some seriously useful ways to use voice. For instance, any time you need to pick from a huge number of choices, voice recognition is the natural way to go. Calling contacts ("Call Sarah Potter"), entering destinations ("Go to 3121 South Park Street"), or picking music ("Play Audioslave") are all much easier than using an HMI to enter the same information, and safer to boot. It just has to work consistently and accurately.

Will car makers see more speech moving to the cloud, or will it be a hybrid of cloud and embedded? I disagree with the majority of the panel on this one, and, I think, the majority of people in the industry. Most auto people believe a hybrid between embedded and cloud allows the best of both worlds — good recognition and updatability when connected, and consistent reliability when not. My colleague Andrew Poliak also champions this view with a memorable catch phrase: Zombie Apocalypse. That is, you still want the system to work, albeit partially, when the infrastructure isn't available.

But if you ask me, everyone is missing the point — theirs is a technology-centric point of view. Everyday customer acceptance of a particular technology is notoriously harsh: if it doesn't work well, it gets rejected out of hand. Good cloud solutions beat an embedded solution hands-down; they just need some improvements (see my hybrid bullet above). Once a customer experiences a good solution, they will become frustrated with one that performs poorly. In my opinion, it's better not to offer the service at all, than to try a graceful degradation of capability, because most customers won't understand or care. Spend the effort instead on making sure you always have an acceptable cloud connection — either through multiple redundant mechanisms or a car-based powerful antenna — and you'll be better off. Even when the car knows some data that the cloud doesn't (like a mobile's contact list or music selection), there's no need to handle that on the embedded side. The cloud recognition server is powerful enough to not require the data set a priori. And I think we can predict an eventual migration of phone data to cloud-based data (or cloud-synchronized data) that makes the car's knowledge either easily transferrable or less relevant.

Who makes money, and how, from voice-enabled agents or voice services? This was one of the best questions of the panel, because nobody really knows the exact model, but everybody agreed that customer tolerance is very low. The most likely candidate is ad-based revenue. This doesn't mean reading ads aloud to the driver, but rather, positively influencing search results for either active or temporary situation-based points of interest (POIs). Depending on how valuable the service is to the driver, there will still be an option for service-based payments and high-value apps.

Standards and building mobile apps — will it come? You need standards if you want to build an app platform that will promote application creation and adoption. That's what we're doing with the QNX CAR 2 application platform — creating a way for someone other than the car companies to join the ecosystem and to deploy their apps to the car in a controlled way. But don't forget, you need a standard way to deploy apps for the cloud half of the recognition, too.

To close, let me share two photos. One was taken outside the Marriott Marquis, the hotel hosting the conference just off of Times Square in NYC. The other is from our PR agency, Breakaway Communications. What do they have in common? Wooden water towers. Sorry, I couldn't help myself; I just love those things. They just look so quaint in a city full of glass and brick.

The summer road trip of 2017 – Part II

Lynn Gayowski

Our series looking at how in-car technologies will transform your summer road trip continues with part II. 2017 is around the corner, and between now and then, automakers will introduce a bevy of new features that will make for a safer and more enjoyable summer road trip. In our first part, we looked at your road trip soundtrack, navigation, and mobile device connectivity. This week, we look at safety, acoustics, and autonomous cars as we cruise to the last exit for this blog series.

Staying safe
By 2017, we likely won’t have developed the technology to shrink your mechanic down to a size that allows you to perch one on your dashboard like a bobble-head, but many cars will have a “virtual mechanic.” This application will let you check lights, fluids, tire pressure and other system vitals, all through your center stack, digital instrument cluster, or phone – as seen below. The idea of a safety speedometer is hardly new in concept (see the Plymouth safety speedometer from 1939), but its modern implementation in the cars of 2017 in the form of vision systems performing road sign detection might just mean fewer speeding tickets on your road trip, especially as you cruise through unfamiliar areas. 

Staying in touch
Sometimes you want to take a road trip to get away from the world, but sometimes you still want (or need) to stay connected. Whether it’s phone calls, texts, or emails, all of this information will continue to be seamlessly integrated into your car in 2017. Less fumbling, fewer distractions.

And low-quality, stilted speakerphone calls will be a thing of the past with the emerging crop of acoustic technologies. Driving alone on a stretch of road and miss having your loved ones close by? Advanced duplex technology will make it seem as though the person on the other end of your phone conversation is sitting right beside you in the passenger’s seat.  

Another cool development? You won’t have to struggle to use voice recognition technologies because of your noisy in-car cabin (that’s right, serenely quiet cabins will no longer be exclusive to luxury cars). Vehicles will continue to evolve to meet the strictest CAFÉ and emissions standards, while the negative acoustic side-effects from less damping materials will be countered using software to remove unwanted engine sound. And your engine in 2017 might really sound like purring (or growling, if that’s your preference), as signature sounds are enabled by engine sound enhancement software. So not only will you not feel crazy for talking to your car, you’ll also be less frustrated as you do so cruising down the interstate. 

Beyond 2017: Look ma, no hands!
While it won’t happen quite as soon as 2017, autonomous cars will hit the roads in the relatively near future, forever changing the dynamic of the road trip. Will road trips be more accessible for the elderly and others who can’t physically drive long distances? Will the new meaning of "cruise control" make the road trip more or less enjoyable? All of these considerations are up for discussion. One thing is certain: many of the advanced safety systems of today and 2017 are precursors to cars that could drive themselves. One such example of what the future of autonomous driving will look like is the University of Parma’s DEEVA autonomous car project being developed by the Artificial Vision and Intelligent Systems Laboratory (VisLab).  

How is in-car technology playing a role in your current summer road trip? How do you want it to improve your future road trips? Stay tuned to our QNX_Auto Twitter account and Facebook page for weekly discussions throughout the rest of the summer about 2017 has in store for your road trip.

WIRED Autopia slips into driver's seat of QNX reference vehicle

Chances are, you've seen pictures of the new QNX reference vehicle. You may have even seen the "making of" video that QNX released a few days ago. But have you seen any video of the vehicle in action?

If not, check out this vid by Doug Newcomb of WIRED Autopia. Last week, at Telematics Detroit, Doug met up with Andrew Poliak of QNX for a tour of the vehicle and its various features, including a re-skinnable UI and voice-controlled Facebook integration. The camera was rolling, and here's what it caught:

A cool (and connected) cluster

"The more we get connected,
Connected, connected,
The more we get connected,
The happier we’ll be."

Okay, I'll admit it, that's a little over the top. But even if connectivity can't make you happy, it can still breathe a great deal of enjoyment and productivity into your life. And when you build connectivity into devices that have previously stood alone, you open the door to all kinds of exciting possibilities. Case in point: the new digital instrument cluster for the QNX technology concept car.

Here's the cluster at a glance — click to see a bigger version:



Admit it: you'd love to wrap your hands around that steering wheel. I know I would. The Mercedes CLA45 is a sweet ride, and it inspired the QNX concept team to pull out all the stops when designing the new cluster with our partner Rightware, a specialist in UI tools for cars.

Four-point check
Okay, let's hop in and take a closer look. But before we put the car in gear, did your driving instructor ever tell you to do a four-point check? You know, where you make sure your lights, brakes, and other systems are working properly? You do remember to do that, don't you? The cluster makes the task a little easier by checking lights, tire pressures, fluids, and the HVAC system automatically:



Ease off the pedal, buddy
Time to put the car in gear. But before we do, let me tell you about the Plymouth safety speedometer. Designed to curb speeding, it alerted the driver whenever he or she leaned too hard on the gas. In theory, it was a great idea. In practice, it wasn't. You see, the year was 1939. And given the limitations of 1939 technology, the Plymouth safety speedometer couldn't take driving conditions or the local speed limit into account. So the speedometer always displayed warnings at the same speeds, no matter what the speed limit.

Connectivity to the rescue! Some modern navigation systems include information on local speed limits. By connecting the digital instrumental cluster to the navigation system in the car's head unit, the concept team was able to pull this information and display it in real time on the cluster, creating a modern (and much more useful) equivalent of Plymouth's 1939 invention.

Look at the image below. You'll see the local speed limit surrounded by a thick red circle, alerting the driver that they are breaking the limit — the fulfillment of an idea that has been 75 years in the making. Mind you, this isn't the only information that the cluster pulls from the head unit. It can also display turn-by-turn directions, trip information, album art, and other content normally relegated to the center display:



Should you answer?
Oh, hold on, the cluster is alerting us to an incoming call. You can ignore it, or you can answer by pushing a button on the steering wheel. And because this is the QNX technology concept car, it's no ordinary phone call. The car is equipped with QNX Acoustics for Voice, which supports Wideband Plus speech to deliver almost four times the bandwidth of a standard narrowband call. Translation: The person on the far end of call sounds like they're sitting right next to you.



Looking back
Okay, it's been a great drive, but time to head home. And in this case, home is the QNX garage. The garage doors are pretty narrow, and you need to back in carefully, so it's great to know that the cluster also provides a convenient window for the car's rear-view camera:



Meanwhile, in the real world...
Don't make the mistake of thinking this is a Buck Rogers scenario. Because the same combination of QNX and Rightware technology is already powering innovative systems like the Audi virtual cockpit. If you haven't yet seen the Audi system in action, check it out:

Crisper, clearer in-car communication — Roger that

Tina Jeffrey

Over the years, Telematics Detroit has become a premier venue for showing off advancements in automotive infotainment, telematics, apps, cloud connectivity, silicon, and more. If the breadth of QNX technology being demonstrated at the show this week is any indication, the event won’t disappoint. Among the highlights is our next-generation acoustics processing middleware — QNX Acoustics for Voice 3.0 — which has been architected to deliver the highest-quality audio for hands-free and speech recognition systems, enabling the ultimate acoustics experience in the car.

What is QNX Acoustics for Voice?
QNX Acoustics for Voice 3.0 is the successor to the QNX Aviage Acoustics Processing Suite 2.0. The new product includes a set of libraries — standard and premium — that offer automakers ultimate flexibility for voice processing in the harsh audio environment of the car.

The standard library provides a full-featured solution for implementing narrowband and wideband hands-free communications, operating at 8 kHz and 16kHz sample rates, respectively. It also includes innovative new features for performing echo cancellation, noise reduction, adaptive equalization, and automatic gain control. Perhaps the most valuable feature, especially for systems constrained by limited CPU cycles, is the high efficiency mode, which can process wideband and higher-bandwidth speech with substantially less CPU load. The net result: more processing headroom for other tasks.

The premium library includes all the standard library functionality, plus support for Wideband Plus, which expands the frequency range of transmitted speech to 50 Hz - 11 kHz, at a 24kHz sample rate. The introduction of Wideband Plus fulfills the higher voice quality and low noise requirements demanded by the latest smartphone connectivity protocols for telephony, VoIP services, and speech recognition. Let me recap with a table:

Supported capabilities	Standard library	Premium library
Narrowband audio: 300 – 3400Hz (8kHz sample rate)	✔	✔
Wideband audio: 50-7000Hz (16kHz sample rate)	✔	✔
Wideband Plus audio: 50Hz – 11kHz (24kHz sample rate)		✔
High efficiency mode	✔  (Wideband only)	✔
VOIP requirements for new smartphone connectivity protocols		✔
Cloud-based speech recognition requirements for new smartphone connectivity protocols		✔

---

Why is high-quality speech important in the car?
Simply put, it improves the user experience and can benefit passenger safety. Also, new smartphone connectivity protocols require it. Let’s examine two use cases: hands-free voice calling, and speech recognition.

In a voice call, processing a larger bandwidth of speech and eliminating echo and noise from various sources, including wind, road, vents, fans, and tires, dramatically increases speech intelligibility — and the more intelligible the speech, the more natural the flow of conversation. Also, clearer speech has less impact on the driver’s cognitive load, enabling the driver to pay more attention to the task at hand: driving.

Speech recognition systems are becoming a primary way to manage apps and services in the car. Voice commands can initiate phone calls, select media for playback, search for points of interest (POI), and choose a destination.

Technological advancements in pre-processing voice input to remove noise and disturbances helps speech recognizers detect commands more reliably, thereby achieving higher recognition accuracy. Early speech recognition systems, by comparison, were unintuitive and performed poorly. Drivers became so frustrated that they stopped using these systems and resorted to picking up their smartphones, completely eliminating the safety benefits of speech recognition.

QNX Acoustics for Voice 3.0 is a comprehensive automotive voice solution that includes industry-leading echo cancellation, noise reduction, adaptive equalization and automatic gain control.

If you happen to be at Telematics Update in Novi Michigan this week, be sure to drop by our booth to sit in our latest concept car — a specially modified Mercedes-Benz CLA45 AMG — and experience our acoustics technologies first hand.