Technical data

General

What are Audio Codecs?

Audio Codecs are used for Audio transmissions over

different networks like ISDN (dial-up connections and

ISDN leased lines), LAN, E1 and X.21.

Dial-up connections are especially used for temporary

connections like reporting applications but also for stu-

dio programme contribution. Furthermore, ISDN or

LAN Audio Codecs are needed as back-up solutions for

the distribution of the Audio signals to terrestrial trans-

mitters.

In comparison to an analogue Audio transfer, Audio

Codecs offer a much higher transmission quality,

because there are less disturbing signals due to digital

transmission channels. When digital transmission chan-

nels are available, the powerful Audio coding algo-

rithms, which require no further error protection, can be

used. Standardised multiplexing procedures offer an

interworking of units from different suppliers. In addi-

tion to the Audio signals, data signals can be transmitted.

Due to the processing power of digital signal process-

ing components (DSPs) small and compact units can be

realised. Besides, there is no cooling necessary (no fan is

required).

What do the systems offer?

• Speech coding

• Interworking with all telephone subscribers

• High-quality Audio coding according to PCM,

ISO/MPEG Layer 2/3, apt-X and ACC-LD

• Use of standardised multiplexing procedures

• Analogue and AES/EBU Audio interfaces

• Headset interface for reporting

•Integrated Software Mixer

• Data transmission

• ISDN Monitoring functionality

• Remote Control functionality

• Easy operation and control

• Operation without fan

• 19" mounting

Audio Codecs in general