User`s manual

HEADSPEAKER – 5.1 HEADPHONE SYSTEM
6. Additional Information
6.1 G en eral
HeaDSPeaker system can be connected to a computer with an USB port. This enables
personal configuration using dedicated software application. When the device detects the
USB connection, USB audio mode is automatically activated. All PCM audio formats are
supported, from 1.0 (mono) up to 7.1.
All computing and signal processing takes place inside the HeaDSPeaker's DSP unit
(utilizing two VSDSP signal processors), thus freeing the host PC system from any
computational stress.
When the device is connected to mains output using USB power adapter, analog audio
input mode is automatically enabled. In this mode, special DSP-logic takes care that
surround-encoded stereo signal is decoded to full 5 channels.
When head tracking is active, ensure that the tracking sensors have an unobstructed
line-of-sight with the transmitter. A short blackout period (for example, a moving
person/object crossing the line) doesn't significally cause interference. Sound playback
will never be stopped, however, the directional information may momentarily get
distorted. Tracking system recovers from such situations automatically, when a clear
line-of-sight is restored.
The operational range of the head tracker is ca. 5-6 meters, slightly depending on
acoustic properties of the room. Typically tracking is reliable when the angle difference
between the sensors and the transmitter is within ca. ±45 degrees, never more than
±70 degrees.
If head tracking suffers from frequent interference, try enhancing the positioning of the
transmitter. A horizontally higher position can be better. Any reflecting surfaces in the
proximity of the transmitter should be eliminated if possible.
6.2 U sin g M ultiple H e a D S P eaker S y stem s
It is possible to use more than one HeaDSPeaker system within the same area. Each
headphone must be equipped with DSP unit of their own to allow individual auralization
processing. However, only one of the units may act as transmitter. This means that other
devices' transmitters must be blocked. The easiest way is to cover the transmitter, for
example adhesive tape can be used for this purpose.
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