Acoustic Magic Voice Tracker Talimatlar

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INSTRUCTIONS

General Setup

Connect the power and audio cables to their appropriate

jacks on the back of the Voice Tracker

Figure 1). Plug the power adapter into a standard 110

volt wall outlet and connect the other end of the audio

cable to the "Line In" input on your computer's sound

card. The adapter supplies 6V DC power to the

microphone.

Figure 1 – Audio and Power Cable Connections

The Voice Tracker

Array may be used as the audio

input device for a variety of speech and multi-media

applications.

Many of the software packages which

utilize a speech input have setup tools which allow you

to specify that you are using the "Line In" connection on

your soundcard and to adjust the sound level (volume)

automatically. Please refer to your specific application

software for details.

selection manually on a Windows PC, see the Adjusting

Your

Soundcard section at the end of these

instructions.

Positioning

Aim the array in the direction of the desired talker(s).

When properly positioned, the talker will be able to see

all 5 green position indicators (see Figure 2).

Figure 2 – Voice Tracker

The Voice Tracker

can be tilted up or down to facilitate

mounting on the desktop (tilted up) or on the monitor

(tilted down). For speech recognition applications, the

desktop position will exhibit slightly better performance.

If you mount it on top of the monitor, makes sure it is

secured so it doesn't fall off.

Mode Switches

The Voice Tracker

has 4 operational modes, selected

by two switches:

the Field switch and the Location

Dependent Squelch

(LDS

Array (see

To adjust the volume or input

Array Front View

) switch (see Figure 3).

Figure 3 – Field and LDS

The Field switch determines the scanning range of the

array. In the wide-angle mode, the Voice Tracker

scan +/- 90 degrees. This is useful if the user desires to

listen to an entire room. In the narrow-angle mode, the

array will scan +/- 45 degrees. The narrower scanning

range helps to reduce the impact of undesired talkers

and noise sources outside the region of interest.

When the LDS

switch is set to On, the Voice Tracker

will turn off during periods of silence and when the sound

source is located outside the array's reception region as

determined by the Field switch.

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.

Once the talker pauses and the Voice Tracker

off, the array will only turn on again when sounds come

from within the +/- 45 degree listening area (see Figure

4).

Figure 4 – Listening Area

For speech recognition applications, when the limited

scan range and LDS

spurious words or commands from sources outside the

listening area will be reduced. The user should decide

whether this feature improves performance in their

particular noise environment.

Using a narrow field of view and LDS

useful when teleconferencing. If the incoming talker's

speech is played through loudspeakers positioned

outside the +/- 45 degree listening area, the array will

turn off when only the far-end talker is active, thereby

minimizing echo in the channel.

Switches

The array turns on

are on, the generation of

can also be

will

turns