cars: Speech interfaces

Showing posts with label Speech interfaces. Show all posts

The ultimate show-me car

The fifth installment in the CES Cars of Fame series. Our inductee for this week: a most bodacious Bentley.

It's one thing to say you can do something. It's another thing to prove it. Which helps explain why we create technology concept cars.

You see, we like to tell people that flexibility and customization form the very DNA of the QNX CAR Platform for Infotainment. Which they do. But in the automotive world, people don't just say "tell me"; they say "show me". And so, we used the platform to transform a Bentley Continental GT into a unique concept car, equipped with features never before seen in a vehicle.

Now here's the thing. This is the same QNX CAR Platform found in the QNX reference vehicle, which I discussed last week. But when you compare the infotainment systems in the two vehicles, the differences are dramatic: different features, different branding, different look-and-feel.

The explanation is simple: The reference vehicle shows what the QNX CAR Platform can do out of the box, while the Bentley demonstrates what the platform lets you do once you add your imagination to mix. One platform, many possibilities.

Enough talk; time to look at the car. And let's start with the exterior, because wow:

The awesome (and full HD) center stack
And now let's move to the interior, where the first thing you see is a gorgeous center stack. This immense touchscreen features a gracefully curved surface, full HD graphics, and TI’s optical touch input technology, which allows a physical control knob to be mounted directly on the screen — a feature that’s cool and useful. The center stack supports a variety of applications, including a 3D navigation system from Elektrobit that makes full use of the display:

At 17 inches, the display is big enough to display other functions, such as the car’s media player or virtual mechanic, and still have plenty of room for navigation:

The awesome (and very configurable) digital instrument cluster
The instrument cluster is implemented entirely in software, though you would hardly know it — the virtual gauges are impressively realistic. More impressive still is the cluster’s ability to morph itself on the fly. Put the car in Drive, and the cluster will display a tach, gas gauge, temperature gauge, and turn-by-turn directions — the cluster pulls these directions from the center stack’s navigation system. Put the car in Reverse, and the cluster will display a video feed from the car’s backup camera. You can also have the cluster display the current weather and current sound track:

The awesome (and just plain fun) web app
The web app works with any web browser and allows the driver to view data that the car publishes to the cloud, such as fluid levels, tire pressure, brake wear, and the current track being played by the infotainment system. It even allows the driver to remotely start or stop the engine, open or close windows, and so on:

The awesome (and nicely integrated) smartphone support
The Bentley also showcases how the QNX CAR Platform enables advanced integration with popular smartphones. For instance, the car can communicate with a smartphone to stream music, or to provide notifications of incoming email, news feeds, and other real-time information — all displayed in a manner appropriate to the automotive context. Here's an example:

The awesome everything else
I’ve only scratched the surface of what the car can do. For instance, it also provides:

Advanced voice rec — Just say “Hello Bentley,” and the car’s voice recognition system immediately comes to life and begins to interact with you — in a British accent, of course.
Advanced multimedia system — Includes support for Internet radio.
Video conferencing with realistic telepresence — Separate cameras for the driver and passenger provide independent video streams, while fullband voice technology from QNX offers expanded bandwidth for greater telepresence.
LTE connectivity — The car features an LTE radio modem, as well as a Wi-Fi hotspot for devices you bring into the car.

Moving pictures
Okay, time for some video. Here's a fun look at the making of the car:

And here's a run-through of the car's many capabilities, filmed by our friends at TI during 2013 CES:

A Porsche you could talk to

The third installment in the CES Cars of Fame series. Our inductee for this week: a very connected Porsche 911.

Paul Leroux

I have a confession to make. The day before QNX Software Systems unveiled this technology concept at car at 2012 CES, I leaked the news on the On Q blog. Mind you, the leak was unintentional. I had been editing a post that described the car and, instead of hitting Save, I hit Publish by mistake. Dumb, I know.

I immediately took down the post and informed my colleagues of the error. Fortunately, my RSS feed didn't give me away, and the launch, which had been strictly under wraps, went ahead as planned. But boy, did I feel stupid.

Now that I've got that off my chest, let's see what the hubbub was about. The car, based on a Porsche 911 Carrera, came equipped with an array of features built by the QNX concept team, including one-touch smartphone pairing, high-definition hands-free calls, rear-seat entertainment, and a digital instrument cluster.

So, you ready for a tour?

The car
Let's start with the exterior. Because man, what an exterior:

The instrument cluster
Once you got behind the wheel, the first thing you saw was the instrument cluster. But
this was no ordinary cluster. It could dynamically reconfigure itself — in response to voice commands, no less. It could even communicate with the navigation system to display turn-by-turn directions. And it was designed to honor the look-and-feel of the stock 911 cluster:

The head unit
To your right, you could see the head unit. Here is the unit's main screen, from which you could access all of the system's key functions:

And here's another screen, showing the system's media player:

The front-seat control of backseat infotainment
The Porsche also showcased how a head unit could offer front-seat control of backseat entertainment — perfect for when you need to control what your kids are watching or listening to:

The voice recognition
The Porsche was outfitted with cloud-based voice recognition, which let you enter navigation destinations naturally, without having to use artificial grammars. Check out this Engadget clip, taken at an AT&T event in New York City:

The car also included features that neither words nor pictures can capture adequately. But let me try, anyway:

One-touch Bluetooth pairing — Allowed you to pair a phone to the car simply by touching the phone to an NFC reader embedded in the center console; no complicated menus to wade through.

Text-to-speech integration — Could read aloud incoming emails, text messages, and BBM messages.

High-definition voice technology — Used 48KHz full stereo bandwidth for clear, high-fidelity hands-free calls.

The car also ran a variety of apps, including TCS hybrid navigation, Vlingo voice-to-text, Poynt virtual assistant, Weather Network, and streaming Internet radio from Pandora, Nobex, Slacker, and TuneIn.

The point
The point of this car wasn't simply to be cool, but to demonstrate what's possible in next-gen infotainment systems. More specifically, it was designed to showcase the capabilities of the QNX CAR Platform for Infotainment. In fact, it did such a good job on that count that the platform took home the 2012 CES Best of Show award, in the car tech category:

Pimp your ride with augmented reality — Part II

Last week, I introduced you to some cool examples of augmented reality, or AR, and stated that AR can help drivers deal with the burgeoning amount of information in the car.

Now that we’ve covered the basics, let’s look at some use-cases for both drivers and passengers. Remember, though, that these examples are just a taste — the possibilities for integrating AR into the car are virtually endless.

AR for the driver
When it comes to drivers, AR will focus on providing information while reducing distraction. Already, some vehicles use AR to overlay the vehicle trajectory onto a backup camera display, allowing the driver to gauge where the car is headed. Some luxury cars go one step further and overlay lane markings or hazards in the vehicle display.

Expect even more functionality in the future. In the case of a backup camera, the display might take advantage of 3D technology, allowing you to see, for example, that a skateboard is closer than the post you are backing towards. And then there is GM's prototype heads-up system, which, in dark or foggy conditions, can project lane edges onto the windshield or highlight people crossing the road up ahead:

AR can be extremely powerful while keeping distraction to a minimum. Take destination search, for example. You could issue the verbal command, “Take me to a Starbucks on my route. I want to see their cool AR cups”. The nav system could then overlay a subtle route guidance over the road with a small Starbucks logo that gets bigger as you approach your destination. The logo could then hover over the building when you arrive.

You'll no longer have to wonder if your destination is on the right or left, or if your nav system is correct when it says, “You have arrived at your destination.” The answer will be right in front of you.

AR for the passenger
So what about the passenger? Well, you could easily apply AR to side windows and allow passengers to learn more about the world around them, a la Wikitude. Take, for example, this recent video from Toyota, which represents one of the best examples of how AR could make long road trips less tedious and more enjoyable:

What if…

Imagine if your car could help you become more connected to friends and family — and to the road ahead. Enter a new video that peers into the not-so-distant future.

It blows my mind, but some people still see connectivity in the car as the enemy. They think that, the more connected the car, the more distracting and dangerous it will be. But you know what? Responding to their concerns is easy. I simply ask them what if.

For instance, what if connectivity helped you drive with greater situational awareness? What if it helped you sidestep traffic jams and axle-busting pot holes? What if it helped you detect a stop sign hidden behind a tree? And what if it helped you become more connected to the people important to you, as well as to the road and the cars around you?

When we talk connectivity at QNX, that’s the kind of connectivity we envision. It isn’t just about Bluetooth or Wi-Fi or LTE — that’s only the plumbing. Rather, it’s about keeping you in tune and in sync with your car, your environment, your business, your friends. Your life.

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.

Speech interfaces: UI revolution or intelligent evolution?

Speech interfaces have received a lot of attention recently, especially with the marketing blitz for Siri, the new speech interface for the iPhone.

After watching some of the TV commercials you might conclude that you can simply talk to your phone as if it were your friend, and it will figure out what you want. For example, in one scenario the actor asks the phone, “Do I need a raincoat?”, and the phone responds with weather information.

A colleague commented that if he wanted weather information he would just ask for it. As in “What is the weather going to be like in Seattle?” or “Is it going to rain in Seattle?”.

Without more conversational context, if a friend were to ask me, “Do I need a raincoat?”, I would probably respond, “I don’t know, do you?” — jokingly, of course.

Evo or revo?

Are we ready to converse
with our phones and cars?

Kidding aside, systems like Siri raise an important question: Are we about to see a paradigm shift in user interfaces?

Possibly. But I think it will be more of a UI evolution than a UI revolution. In other words, speech interfaces will play a bigger role in UI designs, but that doesn't mean you're about to start talking to your phone — or any other device — as if it’s your best friend.

Currently, speech interfaces are underutilized. The reasons for this aren't yet clear, though they seem to encompass both technical and user issues. Traditionally, speech recognition accuracy rates have been less than perfect. Poor user interface design (for instance, reprompting strategies) has contributed to the overall problem and to increased user frustration.

Also, people simply aren't used to speech interfaces. For example, many phones support voice-dialing, yet most people don't use this feature. And user interface designers seem reluctant to leverage speech interfaces, possibly because of the additional cost and complexity, lack of awareness, or some other reason.

"Relying heavily on speech can lead
to a suboptimal user experience..."
As a further complication, relying heavily on speech as an interface can lead to a suboptimal user experience. Speech interfaces pose some real challenges, including recognition accuracy rates, natural language understanding, error recovery dialogs, UI design, and testing. They aren't the flawless wonders that some marketers would lead you to believe.

Still, I believe there is a happy medium for leveraging speech interfaces as part of a multi-modal interface — one that uses speech as an interface where it makes sense. Some tasks are better suited for a speech interface, while others are not. For example, speech provides an ideal way to provide input to an application when you can capitalize on information stored in the user’s head. But it’s much less successful when dealing with large lists of unfamiliar items.

Talkin' to your ride
Other factors, besides Apple, are driving the growing role of speech interfaces — particularly in automotive. Speech interfaces can, for example, help address the issue of driver distraction. They allow drivers to keep their “eyes on the road and hands on the wheel,” to quote an oft-used phrase.

So, will we see a paradigm shift towards speech interfaces? It's unlikely. I'm hoping, though, that we'll see a UI evolution that makes better use of them.

Think of it more as a paradigm nudge than a paradigm shift.

Distracted driving — the stats are alarming

I was driving to work the other day when I heard something on the radio that almost made me drop my smartphone. The Ontario Provincial Police (OPP) announced that, for the first time, deaths attributable to driver distraction outnumber those caused by impaired driving. So far this year, on roads patrolled by the OPP, distraction has led to 47 deaths, while impaired driving has led to 32.

This stat drives home the need for dramatically better head-unit integration of services that drivers would otherwise use their phones to access. This isn't anything new to QNX. We've been working with our partners to provide all the necessary elements to enable this integration through technologies such as HTML5, Qt, iPod out, MirrorLink, and Bluetooth. All these technologies can help create systems that minimize driver distraction but they represent only part of the solution. Pushing buttons on your head unit, combined with smart HMI design, does help, but it's not a panacea.

To truly help drivers keep their eyes on the road we have to minimize the time they spend looking at the infotainment display. Multi-modal HMIs built from the ground up with the assumption that high-quality speech recognition and text-to-speech are available will drastically change the way drivers interact with their infotainment systems. For instance, such HMIs could read your texts and emails aloud to you; they could even let you dictate responses at the appropriate time. But really, the possibilities are endless. And on the topic of talking to your car, we're constantly working with our partners to enrich the speech capabilities of the QNX CAR Platform. But more on that in an upcoming post.

By the way, I wasn't really using my smartphone while I was driving. That's illegal here. Not to mention incredibly dumb.

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.

In-car displays you hear, rather than see

We still have a lot in common with our caveman ancestors. (Yes, I know, they didn't all live in caves. Some lived in forests, others in savannahs, and still others in jungles. But I'm trying to make a point, so bear with me!)

Take, for example, our sense of hearing. At one time, we used auditory cues to locate prey or, conversely, avoid becoming prey. If a cave bear growled, getting a fix on the location of the growl could mean the difference between life and death. At the very least, it helped you avoid running directly into the bear's mouth.

Kidding aside, the human auditory system has a serious ability to fix the location, direction, and trajectory of objects, be they cave bears or Buicks. And it's an ability that's been honed from time immemorial. So why not take advantage of it when creating user interfaces for cars?

Which brings us to spatial auditory displays. In a nutshell, these displays allow you to perceive sound as coming from various locations in a three-dimensional space. Deployed in a car, they can help you intuitively identify voices and sources of instructions, and help pinpoint the location and relative trajectory of danger. They can also improve reaction times to application prompts and potentially hazardous events.

Interested in this topic? Learn more in Scott Pennock's ECD article, "Spatial auditory displays: Reducing cognitive load and improving driver reaction times."

I know, that's a lot to take in. So let's look at an example.

Locating the emergency vehicle, without really trying
Have you ever been cruising along when, suddenly, you hear an ambulance siren? I don't know about you, but I often spend time figuring out where, exactly, the ambulance is coming from. And I don't always get it right. That's called a location error.

Such errors can occur for a variety of reasons. For example, if the ambulance is approaching from the right, but your left window is open and a building on the left is reflecting sound from the siren, you might make the mistake of thinking that the ambulance is approaching from the left. Your mind realizes, quite correctly, that the sound is coming from the left, but the environment is conspiring to mask where the sound is actually coming from.

A spatial auditory display can help address this problem by controlling the acoustic cues you hear. The degree to which the display can do this depends, in part, on the hardware employed. For example, a display based on a large array of loudspeakers can provide more location information than one based on two loudspeakers.

In any case (and this is important), the display can help you determine the location more quickly and with less cognitive load — which means you may have more brain cycles to respond to the situation appropriately.

Helping the driver locate and track an emergency vehicle

A slight right, not a sharp right
I'm only scratching the surface here. Spatial auditory displays can, in fact, help improve all kinds of driving activities, from engaging in a handsfree call to using your navigation system.

For example, rather than simply say "turn right", the display could emit the instruction from the right side of the vehicle. It could even use apparent motion of the auditory prompt to convey a slight right as opposed to a sharp right.

But enough from me. To learn more about spatial auditory displays, check out a new article from my colleague Scott Pennock, whose knowledge of spatial auditory displays far surpasses mine. The article is called Spatial auditory displays: Reducing cognitive load and improving driver reaction times, and it has just been published by Embedded Computing Design magazine.

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.