Customer Support
Troubleshooting
The Voice Tracker™ has no audio output.
- Check that there is power to the unit. The green LEDs should be lit, and track the talker as you move around.
- Check that your PC has selected the Voice Tracker™ as the recording device. In most cases, this is the problem.
For Windows XP, go to Control Panel (category view). Click on Sounds Speech and Audio Devices. Click on Sounds and Audio Devices. Select the audio tab. In the Sound Recording box:- For the Voice Tracker™ I, select the sound card.
- For the Voice Tracker™ I USB, select VXI USB 7.02.
- For the Voice Tracker™ II USB, select Voice Tracker™ II
- For the Voice Tracker™ II analog, select the sound card
- For the Voice Tracker™ I USB and the Voice Tracker™ II USB, be sure that the sound card is selected for sound playback.
The Voice Tracker™ analog audio output is too low.
Be sure that mic boost is engaged in Windows. See 2. above
The Voice Tracker™ II audio output is too low.
Set the output level switch to the line level position.
The Voice Tracker™ II audio output is too strong.
Set the output level switch to the mic level position
There is an “underwater sound superimposed” on the audio.
In addition to the spatial filtering provided by the beamforming of the microphone array, the Voice Trackers have a background noise subtraction algorithm, which filters out stationary noise (like fan noise and air ducts). If that noise is too loud, the background noise subtraction algorithm can cause artifact (the underwater sound). If you are experiencing this, move the Voice Tracker™ away from the source of the stationary noise. You should be able to do this and still pick up the talker because of the Voice Tracker's long-range.
There is a Hum in the audio.
A hum might be caused by a ground loop through the wall power connection. This can be tested by running the PC on battery if you can. If there is a ground loop hum, isolate the power connection.
There is feedback through the PCs speakers.
In the sound playback box in Windows, make sure that the mute box volume control is checked. To get to the sound playback box, see 2. Above.
The Voice Tracker™ II has insufficient acoustic echo cancellation.
Check to be sure that the sound playback level is set around the middle of the range. Control the output of the loudspeaker through its volume control, not the PC volume control. If you are using a preamp, be sure it is not nonlinear.
Also, check to be sure the Voice Tracker™ II is selected as the computer’s recording device. Some computers have built-in microphones, and if it is selected instead of the Voice Tracker™ II, there will be no AEC capability.
Can two Voice Tracker™s be used together to provide increased group coverage?
Two Voice Tracker Is can be combined using a simple Y or a mixer.
Two Voice Tracker IIs can also be combined, but if you are using the acoustic echo cancellation feature, you must provide loud speaker reference samples to both units.
Noise in the analog audio output of the Voice Tracker™ II
The Voice Tracker™ II should be powered by an external USB wall power supply (like our part 202) when used in the analog mode. PC provided USB power adds noise.
Suggestions for use with Dragon NaturallySpeaking
With the Voice Tracker™ I, make sure the switches are set to LDS off and narrow field of view.
With the Voice Tracker™ I, the USB adapter provides better sound quality than the soundcard in many laptops.
With the Voice Tracker™ II, the USB audio output is probably better. Be sure the switch is in the mic level position.
