ÅäÅ©¼î, ½ºÆ÷Ã÷ Áß°è, À½¼º ÇÁ·Î±×·¥, AM ¹æ¼Û¿¡ ¸Å¿ì ÀûÇÕÇϸç, ¾ç¹æÇâ ¼Û¼ö½Å ¹æ½ÄÀ» ä¿ëÇϰí ÀÖ´Ù. |
ȸ¼±ºñ¿ëÀÌ Àú·Å (ÇϳªÀÇ ISDN ȸ¼± - 2DB+D)Çϸç, TA(´Ü¸» Á¤ÇÕÀåÄ¡), NT(ȸ¼± Á¢¼Ó ÀåÄ¡)
³»ÀåÀ¸·Î º°µµÀÇ |
| |
Àåºñ°¡ ºÒÇÊ¿äÇØ ȸ¼± ±¸¼ºÀÌ ¸Å¿ì °£´ÜÇϸç,
Ãß°¡ ºñ¿ëÀÌ µéÁö¾Ê´Â´Ù. |
ISDN¶Ç´Â DATA LineÀÇ ¿î¿ëÀÌ °¡´ÉÇÏ´Ù. |
Line ¶Ç´Â MIC ÀÔ·ÂÀÌ °¡´ÉÇϸç Level Á¶Á¤ÀÌ °¡´ÉÇÏ´Ù. |
Turbo G.722 ¹æ½ÄÀ¸·Î Àü¼Û Áö¿¬ÀÌ ¾ø´Ù. |
LCD Menu drive ¹æ½ÄÀ¸·Î Á¶ÀÛÀÌ °£´ÜÇϸç, ´ÜÃà ´ÙÀ̾ó ±â´ÉÀÌ ÀÖ´Ù. |
¼ÒÇüÀÌ°í °¡º¿ì¸ç, ÈÞ´ë¿¡ Æí¸®Çϰí, ¼¼°è ÃÖÀú °¡°ÝÀÌ´Ù. |
Applications |
 |
The Nexus provides
a cost saving alternative to satellite feeds or dedicated circuits.
|
| |
It is ideal for applications
requiring high quality (7.5 or 15 kHz) mono audio. |
| |
This codec is the best choice
for remotes involving live programming such as talk, news, and
sports, |
| |
where real-time cueback is
essential. |
| |
Also, since G.722 is an international
telephony standard, the Nexus provides compatibility with a |
| |
large established base of
users worldwide including the DXR.1 and DXP.1 made by Comrex. |
About the Algorithm |
| |
The G.722 algorithm is an
international ITU standard which uses Adaptive Pulse Code Modulation
(ADPCM) to achieve a 4:1 data reduction, allowing more audio
information (or wider bandwidth) to be sent along a voice grade
digital channel. |
| |
The Nexus incorporates 64X
oversampled Sigma Delta A to D and D to A converters. The algorithm
is run on a single ADSP-2181 DSP and uses a statistical synchronization
technique which is continually updated by the decoder. When
used in ancillary data mode, H.221 synchronization is used.
Audio is sampled and reconstructed at 16 kHz (7.5 kHz mode)
or 32 kHz (15 kHz mode) with 16 bit quantization. The Nexus
automatically adapts to 56, 64, 112, or 128 kb/s. |