Dialog4 SOUNTAINER V1.0c Manual - Page 4

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The MPEG Technology

The ISO/MPEG technology (Layer II and III) developed by the

"Institut für Rundfunktechnik" and the Fraunhofer Institute allows music

signals (also in larger quantities) to be recorded by means of data

reduction without any considerable loss of quality.

The principle of audio data reduction is based on the frequency

dependent sensitivity of the human ear. The objective auditory prop-

erties and subjective habits of the ear means that the ear ignores

certain sounds and concentrates on the most essential: The message.

This contrasts with purely electronic techniques which hear every-

thing, even the non-essential.

The MPEG audio technology utilises the difference between ear and

electronic measuring equipment when reducing data. By masking all

superfluous noise, a reduction ratio is achieved which is necessary in

order to store large amounts of real time data in recording compo-

nents. The data is compressed and subjected to A/B comparison and

then the ear hears only what is should.

No more and no less.

Some examples of data compression rates achieved with ISO/MPEG:

1 : 1 : 1 : 1 : 1 : 4 4 4 4 4

at Layer I with 384 kbps, stereo

1 : 1 : 1 : 1 : 1 : 6...

6...1 : 1 : 1 : 1 : 1 : 8 8 8 8 8

6...

at Layer II with 192...256 kbps, stereo

6...

1 : 1 : 1 : 1 : 1 : 10...

10...1 : 1 : 1 : 1 : 1 : 12 12 12 12 12

10...

at Layer III with 112...128 kbps, stereo.

10...

Update

This feature ensures that your MP3 player always offers you the latest

in technology. Almost all functional components are stored in the

Flash EPROMS. Further software updates, manuals and technical

information can be called up at all times over the Internet at:

http://www

http://www.dialog4.com

http://www

Before starting an upload / download ensure that your SOUNTAINER

is in the STOP mode. Confirm the safety query with OK and follow

the instructions on your PC screen.

Interruption of the connection or switching off the computer will result

in an unsuccessful update and the update procedure will then have to

be repeated. It may happen you are not able to switch the

SOUNTAINER

off after an update. In such case, please remove the

batteries.

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