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F e a t u r e s & S p e c i f i
c a t i o n s . . . |
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S
T L - I P - 1 6
and
S T L - I P - 8
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AudioTX
STL-IP-16 and STL-IP-8 provide for live audio transmission
over IP networks with transmission grade audio quality &
robustness and extremely low delays - as low as 5ms!
AudioTX
STL-IP-16 acts as a sophisticated IP Audio Multiplexer. You
can setup the system to use multiple ‘TX Channels’
(up to 20), each of which will send live audio from any of
the inputs to one or more remote destinations. If you wish,
you can send the same audio to multiple destinations, using
the same or different audio formats (mono/stereo, compression
settings etc) and whether using multicast or multiple point-to-point
(unicast) connections. The RX Channels allow you to receive
multiple audio channels from remote locations, limited only
by the 16 (or 8) physical outputs on the unit.
- Up
to 16 audio inputs and outputs. Choice of Professional Balanced
Analog or AES digital inputs and outputs.
- Each
input (mono, or paired stereo inputs) can be treated as
a separate TX channel and can be sent separately to one
or more remote units. Multiple audio channels can be sent
between devices in a single connection and optionally with
Syncho-Lock guaranteeing sample level timing accuracy between
channels for applications such as 5.1 or 7.1 surround etc.
- RX
channels can be received from multiple remote units simultaneously
and output on separate audio outputs.
- IP
Codec for live audio: Transmit
and receive audio using point-to-point UDP or TCP/IP, and
point-to-multipoint UDP Multicast network protocols over
ANY IP Network - including private networks (LAN/WAN), Satellite,
Wireless networks, T1/E1, ATM or the Internet.
- Each
TX channel can transmit audio on up to six simultaneous
connections, each using different network protocols if required.
Using Multicast, audio can be sent to an unlimited number
of destination units. Audio is received independently from
transmission.
- AudioTX
STL –IP works with Linear (Uncompressed) audio at
up to 24 bits and 96kHz sample rate, or compressed audio
via built-in Professional Grade MPEG Layer 2 or MPEG Layer
3 coding/decoding, J.41, G.722 or our extra Low-Bitrate
speech codec.
- Optional
Forward Error Correction (FEC) and network jitter compensation
where required.
- Synchronous
transmission of serial ancillary data and/or contact closures
(TTL & GPIO).
- Built-in
silence and audio overload detectors.
- Monitor
and control via web-browser control interface, SNMP traps
and queries, E-mail alerts, Telnet style IP remote control
interface (using simple text commands and responses), included
software and logic level status outputs.
- Compatibility
between AudioTX STL-IP-16, STL-IP-8 and STL-IP units allows
you to build a flexible system taking account of the needs
of each location or site in your 'audio network'.
- Incredibly
flexible and cost-effective solution.
The
AudioTX STL-IP range can send live audio using any combination
of UDP, TCP/IP or UDP Multicast (to an unlimited number of
destinations for each UDP Multicast connection). The IP Codec
system can receive audio from one location.
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AUDIO
SPECIFICATIONS AND PROTOCOLS |
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Summary:
Choice
of Professional-grade analogue balanced Stereo audio inputs
and outputs or AES/EBU digital audio in/outputs, external wordclock
input. Audio in/out at up to 24 bit, 96 kHz sample rate |
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| Mono/Stereo
audio transmit/receive using Linear (uncompressed) audio, Broadcast
Quality MPEG Layer 2, Layer 3, J.41, G.722, LB-1 (extra low
bitrate for speech), Mono, Stereo, Joint-Stereo, Dual-Mono operation
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Detailed
specification: |
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Linear
(uncompressed) audio: |
Uncompressed audio at 8kHz to 96kHz sample rate, 16 or 24 bit.
Mono or Stereo modes. |
Full-bandwidth
linear audio with a 5ms delay. |
| MPEG
Layer 2 coded audio: |
Professional
MPEG Layer 2 coded audio at between 16 and 48 kHz sample rate,
16 bit, Mono, Stereo, Joint-Stereo and dual-mono modes. |
Provides
full-bandwidth broadcast quality stereo audio at bitrates between
128kbps and 384kbps. Mono audio from 64kbps. 45ms delay. |
| MPEG
Layer 3 coded audio: |
Professional
MPEG Layer 3 coded audio at between 16 and 48 kHz sample rate,
16 bit, Mono, Stereo, Joint-Stereo and dual-mono modes. |
Provides
full-bandwidth broadcast quality stereo audio at bitrates between
128kbps and 384kbps. Mono audio from 64kbps. 125ms delay. |
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| J.41: |
High-grade
audio compression for professional audio, 32kHz sample rate,
Mono or Stereo. |
Mono
audio at 384kbps, Stereo at 768kbps. 5ms delay. |
| G.722: |
Good
quality algorithm for speech/voice with a 7.5kHz audio bandwidth.
Runs at 16kHz sample rate. |
Mono
audio at 64kbps. 5ms delay. |
| LB-1: |
Extra
Low-Bitrate speech codec offering 7.5kHz audio bandwidth. Runs
at 16kHz or 24kHz sample rate and a range of bitrates determine
quality. |
Mono
audio from 12kbps. 40ms delay. |
| Source
audio selection: |
User-selectable
channel inputs to audio transmission modules - Left channel,
Right Channel, Stereo or MonoMix (L+R).
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NETWORK CAPABILITIES AND SPECIFICATIONS |
MONITORING/CONTROL |
| Supports
all IP networks including Telco, MPLS, Private/Dedicated circuits,
LAN/WAN, Satellite, Wireless (incl. WiFi), ATM, T1/E1 and
The Internet for IP codec operation.
Network modes: UDP, TCP/IP, UDP Multicast modes
Audio transmit/receive bitrates between 24 kB/s and 4.6 mB/s
per audio channel.
Optional transmission of ancillary serial data at up to 57600
bps, up to 4 in / 4 out GPIO (contact closures)
Optional use of FEC (forward error correction) and/or network
jitter compensation/safety buffer configurable in 1ms increments
from zero to 5 seconds per audio channel
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Monitoring
and control via:
-
Web-browser control interface
- SNMP
traps and queries
- E-mail
alerts
- Telnet
style IP remote control interface (using simple text commands
and responses)
- Included
software
- Logic
level (TTL) status outputs
Built-in
silence and audio overload detectors. |
AUDIO,
NETWORK & DATA CONNECTIONS |
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Analog
audio inputs: |
Stereo
balanced inputs, up to 16x XLR (F) |
-18db
nominal signal level. +18db at analog inputs = 0dbFS (digital
full scale). |
| Analog
audio outputs: |
Balanced
Stereo outputs, up to 16x XLR (M) |
-18db
nominal signal level. 0dbFS (digital full scale) = +18db at
analog inputs. |
| Digital
audio input: |
AES/EBU
digital input, up to 8x XLR (F) |
Input
accepts both AES/EBU and SPDIF type of signals. |
| Digital
audio output: |
AES/EBU
digital output, up to 8x XLR (M) |
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| Clock
input: |
Wordclock
input, BNC. |
System
clock-source is user-selectable: internal clock, wordclock input
or use clock from incoming AES/EBU source. |
| GPIO: |
TTL
level inputs (4) and outputs (4) plus an additional 4 status
output signals, D-Sub 25 pin connector. |
GPIO
TTL inputs & outputs provide end-to-end transmission of
signals from transmitting to receiving units. |
| Ancillary
Data: |
RS-232
serial connection for ancillary data in and out, D-Sub 9 pin
connector. |
Serial
data can be transmitted/received alongside audio at up to 57600
bps. |
| Network
Connection: |
Neutrik
Ethercon RJ45 connector, accepts standard RJ45 connector or
locking Ethercon cable.
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10/100/1000
Ethernet connection for TX, RX audio and web-management interface. |
AC
Power: |
96-264
VAC, 50-60Hz autosensing for worldwide operation.
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