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Hardware Review: Phoenix Audio MT107A Array Microphone Car Kit

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by , 02-03-2012 at 09:14 AM (15946 Views)

What is it?

The Phoenix Audio Technologies MT107A is a USB-powered array microphone kit with echo and noise cancellation technology.

The Verdict:

The Phoenix Audio Technologies MT107A is the most ideal solution for hands-free operation with a car PC. The technology built into the kit allows for clear communication whether using the device for voice commands or phone calls through compatible Bluetooth phone systems. It's flexibility in installation is a well-considered feature which means the microphone position and accuracy can be optimized regardless of vehicle type.



What’s in the box?

The MT107A comes with a stereo microphone, the noise cancellation processor and its stand, a USB cable, and an instruction manual.


Description:

Throughout the existence of the in-car entertainment genre, a perfectly working voice recognition solution has been one of the primary systems to attempt to integrate. Unfortunately, OEMs and hobbyists alike have found it is an incredibly difficult task. Road noise, vehicle attenuation, and user individualism each add their own set of issues to tackle when considering the installation of a true hands-free voice solution. The Phoenix Audio Technologies MT107A microphone car kit does the best job yet for hobbyists of mitigating these issues and more.

The immediate question any potential installer will ask about this stereo microphone bundle is "how well does it work?" The answer I'd reply with is "darn well". In fact, I was so enamored with how well my voice replayed back through the windows audio capture utility that I decided to attempt to type these two introductory paragraphs using nothing but the MT107A and the Windows 7 built-in speech recognition program, all while traveling down the loud and crowded streets of the Washington DC metropolitan area.


Minor grammatical errors aside, the MT107A did the job without any issue. Of course, most car computer users are not going to be using this microphone bundle to type reviews or even respond to an email. The primary use of most in-car microphone setups is clearly the use of voice commands and hands-free phone calls.

Before proceeding to anymore bragging, I will discuss a bit more of the hardware installation of the MT107A. Most people realize that compared to most devices, installing a microphone is pretty much a breeze in the car, and the MT107A definitely falls in that notion. Simply connect the USB cable to the microphones control box and processing core, then run your stereo microphone to the location of your choice. The primary benefit the MT107A has over competing devices is the fact that the stereo microphone comes with easy to use clips, allowing the microphone to be installed anywhere from the rear-view mirror or the sun shades in any vehicle today. In short, these clips allow you to have the microphones as close to your mouth as possible without interfering with driver view or personal comfort. Even if your microphone installation isn't as ideal, Phoenix Audio has a host of SDK applications on their website that can be used to tune the MT107A to your liking.


Wires connected and tucked, a small configuration in Windows sound manager gets you off and running with using the MT107A as your primary means of voice control in the car. Once configuration is completed, its up to the user to decide how to utilize the MT107A DSP based sound management systems. In testing, I loaded up the RideRunner front end with the DFXVoice plugin. Having previously having a lot of frustration from this software and my Andrea array microphone, I can say that it now works perfectly with the MT107A. Voice commands spoken at normal volumes get picked up and processed right away.

The more extensive test of an in-car hands-free solution is its use during a phone call via Bluetooth. In trying a few calls with a few different smartphones I received mixed results. My Motorola Droid Bionic worked rather well. Call participants reported no echoing or artifacts during the call, and the bi-directional communication flowed as well as any speakerphone based call would. My wife's LG smartphone however did have some echoing with the MT107A. Callers reported that they could hear themselves talking prior to hearing my response. These results were duplicated in many different scenarios; in my car parked, in my car while driving, and in my wife's minivan under the same conditions. The discovery in all of this testing was the MT107A can do the job of providing clear and precise voice fidelity... provided your phone manufacturer and bluetooth stack are doing their respective jobs.

In the end, I don't have a problem replacing the Andrea microphone I have "somewhat" used over the last 3 years with the Phoenix Audio Technologies MT107A. The MT107A control box, despite being fairly larger than the Andrea's, does a better job of allowing me to control my experience with my voice in the end.

The Positive:

• High fidelity voice capture
• Flexible installation of microphone
• SDK available to tune to personal preference
• Can be used with 2 sets of stereo microphones
• USB bus powered



The Negative:

• Sound processor housing is rather large
• Microphone wiring could stand to be longer to accommodate more installs without extensions
• Isn't the all-in-one solution for all Bluetooth phone calls




The Verdict:

The Phoenix Audio Technologies MT107A is the most ideal solution for hands free operation with a car PC. The technology built into the kit allows for clear communication whether using the device for voice commands or phone calls through compatible Bluetooth phone systems. It's flexibility in installation is a well considered feature which means the microphone position and accuracy can be optimized regardless of vehicle type.

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