User manual

2 SCOOP STUDIO - User manual 55 000 033 – Ed. D
This document is the property of AETA AUDIO SYSTEMS and can not be duplicated without authorisation March 2006
2. Introduction
2.1. Functions
The Scoop Studio is designed to enable radio broadcasters to conduct high quality live
two-way remote broadcasts, or two way commentaries with return cue, via ISDN or
POTS lines.
1
2.1.1. Algorithms
The Scoop Studio contains a mono audio compressor/de-compressor (Codec) that
performs all necessary ISDN and POTS algorithms.
In ISDN mode, the user can select one of four operational audio standards:
1. Phone mode (G.711, 3,5kHz)
2. Live speech ( G.722, 7kHz, low delay )
3.
Music CD quality (Layer II, 20kHz)
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4. Live concert (4SB-ADPCM,15kHz, proprietary low delay )
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In POTS mode, the user has only live speech mode ( CELP , 7kHz )
One outstanding feature of Scoopy codec is the 5A System
®
on receiving an incoming
ISDN call, the unit can automatically detect the coding algorithm and parameters of the
calling codec, and then adjust itself in a compatible configuration so that the connection
succeeds regardless of the initial configuration and that of the remote unit.
2.1.2. Audio interfaces
The Scoop Studio contains one audio input, one audio output and one headphone for
monitoring
2.1.3. Transmission
Using an ISDN line, transmission bit-rate is either 64kbps or 128kbps
2
. Using a POTS
line, transmission bit rate depends on the telecommunication network quality with a
maximum bit-rate of 33.6 kbps. The Scoop Studio transmits data at a minimum rate of
12.000 bits and at a maximum of 24.000 bits of information a second
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Depending on configuration version
2
On the 15kHz ISDN version
®
5AS = Aeta Audio Advanced Automatic Adjustment System