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Acoustic Magic Voice Trackers - Voice Tracker I and Voice Tracker II

The Voice Tracker Array Microphones are cost-effective, user-friendly and provide high-quality recording, making them ideal for recording meetings, capturing lectures or conferences and accommodating speech recognition applications.

These array microphones scan 360O to electronically locate and automatically steer towards the talker, ensuring that no audio is missed.  While the digital signal processor creates a listening beam which focuses on the talker and spatially filters noise from other directions, proprietary noise reduction algorithms filter out background noise.  With their eight "always on" array elements and their two stage noise reduction algorithms, the microphones have an extremely long pickup range (10+ metres for the Voice Tracker I and 7+ metres for the Voice Tracker II) there is no need for multiple microphone/mixer setups, cumbersome headsets or hand held microphones, which can be expensive and require expert installation and management.  With the built in ceiling mount you can there is no need to clutter of the table with microphones.

The unique electronic automatic steering technology comes with selectable steering limits (90O and 180O) for Speech Recognition and Meeting Recording modes.  The wide angle mode is useful if you wish to listen to an entire room while the narrower scanning range helps to reduce the impact of undesired talkers and noise sources outside the region of interest.  The Voice Tracker does pick up sound from behind, giving it a full 360O field of view but it is more sensitive in the forward direction.

Another great feature is the selectable LDS (Location Dependent Squelch), which de-sensitizes the microphone to sounds coming from pre-selected directions thus reducing annoying interference of additional people speaking during Speech Recognition or feedback during teleconferencing.  If the LDS switch is on, the Voice Tracker will turn off during periods of silence and when the sound source is located outside the array's reception regions as determined by the Field switch.  The array turns on again very quickly when the user resumes talking.  When used together with the narrow field of view, the LDS can be employed to ignore unwanted sounds making it useful when teleconferencing.  If the incoming talker's speech is played through loudspeakers positioned outside the narrow field, the array will turn off when only the far-end talker is active.  This will minimize the echo effect.

The microphones have a tilt capacity to facilitate desktop, monitor top, ceiling or wall mounting and a five element "in range" light to indicate the location of the chosen person speaking and the sufficiency of the signal being received.

Powered by a wall power converter there is no risk of loss of performance when batteries run out and a USB adapter is an available option for use with MAC's and laptops with low performance sound cards.

The microphones are compatible with a variety of operating systems including MS Windows 3.x, Windows 95, Windows 98, Windows NT, Windows 2000, Windows ME, Windows XP, Windows Vista, Windows 7 and Mac OS and Mac OS X.

While the Voice Tracker I can be used in conventional conferencing systems that have AEC (Acoustic Echo Cancellation), the Voice Tracker II was designed for conferencing systems that need the AEC built into the microphone itself.  Acoustic Echo occurs when an open microphone picks up a far end talker (from the loudspeaker) and sends it back to the far end talker (as an echo).  The Voice Tracker II incorporates a sophisticated and effective acoustic echo cancellation technology which makes picking up the speech of people located throughout the entire conference room even simpler.  VoIP-based telephony systems like Skype and Adobe Connect become easily-utilised and inexpensive conferencing tools with the Voice Tracker II.

The Voice Tracker II is significantly smaller than the Voice Tracker I, making it more compact and more portable and it is powered by a USB connection meaning that there is no need for access to wall power or for voltage converters.

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 (Digital Signal Processor) as a RS 232 serial word through a DB-9 jack.  This information can be used to point a camera, or turn the head of a robot, toward the talker by a sophisticated user who has independent access to algorithms for the use of the location information.  Acoustic Magic does not provide such algorithms.