The ISDN Module |
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The ISDN module transforms
the Matrix into a lightweight yet powerful ISDN codec with integrated
|
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terminal adapter. |
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The codec engine includes
3 different algorithms. ISO/MPEG Layer III and G.722 are implemented
for |
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maximum industry compatibility,
and Turbo G.722 yields 15 kHz, very low delay audio transmission.
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The terminal adapter is designed
to work with virtually all international ISDN switch protocols
and is |
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available with either an
“S/T” or a “U” interface. |
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GSM Module |
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The GSM Module includes a
GSM wireless phone and software designed to transmit 7 kHz audio |
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over a standard 9600 baud
GSM connection. |
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TelCell Module |
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The TelCell module connects
to the Matrix Portable Codec adding the ability to send and
receive audio |
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through the handsfree port
of many mobile phones or standard telephone lines. |
| |
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Although this module does
not add any audio enhancement to the wireless or land line phone
call, |
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it makes a useful back-up
tool. Adding professional microphones will often improve audio
quality. |
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Calls can be placed to regular
telephone hybrids with this module |
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(no Matrix is required on
the receiving end of the call). |
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The Battery Kit |
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The battery kit includes
a NiMH (Nickel Metal Hydride) battery, a charger and mounting
bracket. |
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The battery may be used as
a primary power source to run the unit for up to 7 hours, |
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or it can be used as an optional
backup should AC power be interrupted during a broadcast. |
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The Audio Interface |
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The Matrix includes two mic
inputs (one is mic/line switchable), one headphone output and
one line |
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level output on XLR, providing
direct connection to mics and headphones or a mixer. |
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An additional -10 dbu tape
input allows connection to a minidisc or DAT player. |
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Phone Line Feature |
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The Matrix adds several utilities
which aid in ease of use and reliability on difficult phone
lines. |
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The unit automatically detects
the optimal data rate and delivers the best audio possible.
|
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A MaxRate (Maximum Data Rate)
can be set prior to connection, giving further assurance of
stability. |
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A quick rate drop feature
sets a new MaxRate for reliability with only a 2 second loss
of audio. |
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Renegotiation can be disabled,
preventing drop outs at inconvenient times. |
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A quick rate drop or a full
renegotiation can be performed at any chosen time by pressing
a single |
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button at either end of the
call. |
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Error correction is available.
And even at 14.4 kb/s, the Matrix will deliver 7 kHz audio |
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(see frequency response chart
on page 4). |
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Comrex has implemented every
tool possible to aid you in delivering a seamless and uninterrupted
|
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broadcast. |
Delivers 15 kHz full duplex audio on a single, standard telephone
line via an integrated V.34 modem 
Connections