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Voice Tracker II Array Microphone

SKU: VAM201
Price: $496.80
$444.36

Replacement Wall Power Supply:   YES (Add $15.18)
USB Adapter - 102A:   YES (Add $24.84)
25 Foot Audio Extension Cable:   YES (Add $22.08)
6 Foot Audio Cable:   YES (Add $13.80)
DB 9 Connector Cable:   YES (Add $15.18)
3.5mm Stereo Splitter:   YES (Add $13.80)
Qty: - +
   - OR -   

Voice Tracker II Array Microphone

Automatic electronic steering of “listening beam” to talker location 
Two stage noise reduction (spatial filtering and noise reduction processing) 
Built in High Quality Acoustic Echo Cancellation. 
6 element, 10 inch long mic array for long range 
Mute Mode 
5 element “in range” light to indicate location of chosen talker and sufficiency of signal 
Talker location signal thru DB 9 jack (cable optional) 

Compatible with a variety of operating systems including

Apple/Macintosh: Mac OS, Mac OS X, Mac OS X 10.11
Microsoft: Windows 3.x, Windows 95,Windows 98,Windows NT, Windows 2000,Windows ME, Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10
Linux

Since the Voice Tracker array microphone can pick up talker throughout the entire room, it has often been used for conferencing application

It became clear from customer feedback that incorporation of a high-quality acoustic echo cancellation (AEC) algorithm would broaden the Voice Tracker’s application by enabling full duplex VoIP based conferencing at a fraction of the cost of conventional conferencing systems.

The addition of a high-quality AEC algorithm to our internal DSP is the main differentiating feature of the Voice Tracker II Array Microphone, but it has several other attributes as well.

Turns inexpensive VoIP based telephony systems like Skype and Adobe Connect into Conferencing tools.

A crucial audio requirement for conferencing is the elimination of acoustic echo (sound from the far end talker picked up by the open mic and sent back). The Voice Tracker II Array Microphone’s internal AEC algorithm provides performance that rivals or exceeds that of AEC boxes costing several thousand dollars.

Connect the Voice Tracker II Array Microphone to your PC based VoIP software and eliminate the need to use headphones; all the near end talkers will be heard, even if they talk softly or are far away from the mic, and the far end talker will hear no echo.

Audio Spectrums for AEC

Audio Spectrums for AEC
Acoustic Echo occurs when an open mic picks up a far end talker (from the loudspeaker) and sends it back to the far end talker (as an echo). In the above charts, the bottom chart shows the audio from near end and far end talkers transmitted by the Voice Tracker II with acoustic echo cancellation off. The top chart shows a similar audio transmission with the AEC turned on.

Output recording of the Voice Tracker II with AEC Off

Output recording of the Voice Tracker II with AEC On

Improved Portability

The Voice Tracker II is significantly smaller than the Voice Tracker I. The Voice Tracker II’s primary audio output is USB and it is powered by its USB connection, eliminating the need to be connected to wall power. Not only does this remove the need to carry the wall power converter, it eliminates the need to have different wall power converters for different countries.

Voice Tracker II User Instructions

Electronically Locates & Automatically Steers Toward The Talker

Freedom of Movement

• Works at long range
• Suppreses Interfering Sounds
• Headset Quality WIthout the Headset 

The combination of these innovations allows the Voice Tracker to have extremely long pick up range. The ability to “hear” talkers throughout an entire room results in a strong economic advantage over the alternative of using several conventional microphones, coupled together through a mixer.

Automatically steers towards the talker

Freedom of Movement

• Works at long range
• Suppreses Interfering Sounds
• Headset Quality WIthout the Headset

The combination of these innovations allows the Voice Tracker to have extremely long pick up range. The ability to “hear” talkers throughout an entire room results in a strong economic advantage over the alternative of using several conventional microphones, coupled together through a mixer.

The addition of a high-quality AEC algorithm to our internal DSP is the main differentiating feature of the Voice Tracker II Array Microphone, but it has several other attributes as well.

Turns inexpensive VoIP based telephony systems like Skype and Adobe Connect into Conferencing tools.

Electronically Locates & Automatically Steers Toward --The Talker

A crucial audio requirement for conferencing is the elimination of acoustic echo (sound from the far end talker picked up by the open mic and sent back). The Voice Tracker II Array Microphone’s internal AEC algorithm provides performance that rivals or exceeds that of AEC boxes costing several thousand dollars.

Connect the Voice Tracker II Array Microphone to your PC based VoIP software and eliminate the need to use headphones; all the near end talkers will be heard, even if they talk softly or are far away from the mic, and the far end talker will hear no echo.

Audio Spectrums for AEC

Acoustic Echo occurs when an open mic picks up a far end talker (from the loudspeaker) and sends it back to the far end talker (as an echo). In the above charts, the bottom chart shows the audio from near end and far end talkers transmitted by the Voice Tracker II with acoustic echo cancellation off. The top chart shows a similar audio transmission with the AEC turned on. 

Improved Portability

The Voice Tracker II is significantly smaller than the Voice Tracker I. The Voice Tracker II’s primary audio output is USB and it is powered by its USB connection, eliminating the need to be connected to wall power. Not only does this remove the need to carry the wall power converter, it eliminates the need to have different wall power converters for different countries.

Talker Location Signal

Since the Voice Tracker automatically and electronically steers a listening beam to the active talker, it knows the location of the talker. In the Voice Tracker™ II this information is made available outside the DSP as a RS 232 serial word through a DB-9 Jack. A sophisticated customer can use this information to point a camera, or turn the head of a robot toward the talker. Note that Acoustic Magic does not provide any algorithms for the use of the location information.

VoIP conferencing in small rooms/huddle rooms

There are two value proposition for the Voice Tracker II in conferencing applications. The first is its ability to pick up talkers as far as 20 feet away from the microphone, with a 360° field of view. Conventional conferencing systems like the Polycom really use only one microphone at a time and have limited pickup range.
The second is acoustic echo cancellation (AEC). In a conferencing application, acoustic echo cancellation is vital. Acoustic Echo occurs when the far end talker's voice is picked up from the loudspeaker in the near end and sent back to the far end as an echo. Some VoIP products have good AEC, and in those cases you can use a Voice Tracker I. But if they do not have a robust AEC, the Voice Tracker II, which has its own internal high-performance AEC, remedies the problem.
1. https://www.acousticmagic.com/about-us/user-comments/#hnorton
2. https://www.acousticmagic.com/about-us/user-comments/#price

Telemedicine

The value proposition is similar to that for conferencing. Often the Voice Tracker two is connected directly to a camera, which has no AEC capability, so the AEC feature is even more important.
1. https://www.acousticmagic.com/about-us/user-comments/#mhaxton

Automatic speech recognition

EMR for doctors important application for automatic speech recognition. The microphone most used for this application is a Phillips speech mic, which is a handheld device. Many doctors (and lawyers) want to be hands-free (or headset free). In those cases the Voice Tracker II is ideal. It does not take up much space on the table and it's very effective for recognition accuracy at ranges up to a few feet.
1. https://www.acousticmagic.com/about-us/user-comments/#psingh
2. https://www.acousticmagic.com/about-us/user-comments/#moollan

Assistive applications

Because the Voice Tracker II is so portable (it is relatively small and could be powered by the USB in the laptop) it can be used by deaf students to get translations (by sign language) in classrooms.
1. https://www.acousticmagic.com/about-us/user-comments/#ldeichsel

For additional application ideas, scan our user comments page.

Voice Tracker II Specifications

Range

20+ feet for meeting recording (depends on acoustic characteristics of the room).

AEC Performance

G.167 Compliant
80 db of echo cancellation in single talk
40 db of echo cancellation in double talk
160 ms of echo tail length
14 dB of background noise reduction
Convergence time of less than 100ms
Sample rate: 48KHz

Primary audio output

USB

Secondary audio output

Mic level or Line level (switch controlled) 3.5mm mono jack
6ft male/male audio cable (optional) 500 ohm output impedance

Talker location signal accuracy

5 degrees

Frequency Response

100Hz - 11,250 Hz

Physical Dimensions

Length: 11.5″
Height: 1.5″
Weight: 0.75lbs

Power Equipment

Powered by USB (wall-powered converter optional)
5V DC
400 ma

Compatible with a variety of operating systems including

Apple/Macintosh: Mac OS, Mac OS X
Microsoft: Windows 3.x, Windows 95,Windows 98,Windows NT, Windows 2000,Windows ME, Windows XP, Windows Vista, Windows 7, Windows 8
Linux

NOTE: For the voice Tracker II to work on a mac you have to use a USB audio output adapter.  There is nothing special about the USB adapter. Just connect the analog audio signal to the pink Jack and the USB plug to the PC or Mac.

Acoustic_Magic_Certifications

Using the Voice Tracker Array Microphone as an External Microphone to an iPhone

People use our Voice Tracker array microphones to record meetings, or for conferencing, because of its long pickup range (20 to 30 feet) and 360° field of view. 

Our Voice Tracker array microphones are designed to be connected to PCs or other devices either through a 3.5 mm analog audio connection (through a soundcard) or a USB connection. The Voice Tracker I has only an analog output, but can he be easily converted to USB using a USB adapter like our part 102A. The Voice Tracker II has both an analog audio output and a USB audio output. 

Their analog outputs are at mic level, with low impedance, and work well with sound cards. The boost in the soundcard is designed to bring the output up to usable levels. High levels of boost can be employed because of the good signal-to-noise ratio in the microphones. 

From time to time we have received inquiries about connecting the Voice Tracker microphones to an iPhone (or other smart phones). Initially, this couldn’t be done because the iPhone required a very specific output impedance from the external microphone. If the impedance didn’t match what the iPhone was looking for, it would default to the built-in microphone. 

Fortunately, impedance matching connectors have become available to eliminate this roadblock. 

We have tested an “ iPhone 1/8 inch microphone adapter to 3.5 mm four conductor TRRS male” adapter from KV connection (part number code KM-iPhone-mic), and it works just fine. Similar adapters are available from other manufacturers. Rode has told us that their adapters also match the iPhone’s impedance requirement, but we have not tested one. 

Note that when the KV connection adapter was connected to the iPhone, we lost the speaker output. 

This can be corrected by first connecting a” 3 .5 mm 4 pin to 2 x 3 pin 3.5 mm headset splitter adapter” to the iPhone. This adapter is available from companies like StarTech. The arm labeled microphone was connected to the Voice Tracker, and the arm labeled headset was connected to our PC speaker to create a long-range speakerphone with the Voice Tracker I as the mic and the PC speaker as the speaker.

Source

Consequently, the Voice Tracker can pick-up questions from the class as well as lecture from the professor, enabling more than 350 schools and universities to choose the Voice Tracker I for lecture recording.

Or, it can pick up questions from the audience in town meetings or comments around a board room conference table for meeting recording. The long pickup range and wide field of view make the Voice Tracker ideal for conferencing applications as well. The Voice Tracker I can be used as an auxiliary microphone with conventional conferencing systems that have a good AEC. The Voice Tracker II has its own built in AEC, and consequently can be used with VoIP systems that do not have a robust AEC. 

Voice Tracker Array Microphones can also be used for a hands-free/headset free automatic speech recognition with full vocabulary dictation products like Dragon NaturallySpeaking. The Voice Tracker’s long range make it ideal for home automation applications where a whole room has to be covered for command-and-control recognition.

Our Certifications

GRUNDIG Business SystemsDragon Naturally SpeakingZoom

PANPTOHomeSeer technologiesMacSpeech

SONICLEARecho active learningGoToMeeting

BlueJeans


 

Bruce M on 12/25/2008 08:07am
I have used Dragon NaturallySpeaking on a daily basis in my work as a securities litigator for at least a dozen years. During that time I have experimented with many microphones looking for the optimal combination of accuracy and comfort. I have at last found that optimal combination in the Acoustic Magic microphone array. In an office environment where external noises can be excluded (such as by closing a door) Acoustic Magic is as accurate as the best wired headset microphones (and better than wireless headsets), but without the inconvenience and discomfort of wearing something on your head/ear. I heartily endorse Acoustic Magic for any serious user of voice recognition software in such an environment.
Bruce M

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