BMW ONBOARD COMPUTER Betriebsanleitung PDF herunterladen (Seite 77)

76n

Diversity function Dolby DSP

To ensure the best possible reception,

this radio also has an RDS diversity

function, i.e. it is equipped with two

separate FM receivers. One of these

supplies the selected station, the other

searches continuously for other fre-

quencies which are transmitting the

same station, and for RDS stations

which can be received.

If the reception quality of the selected

station deteriorates, but no alternative

frequency can be found, the frequency

last selected appears on the display.

Many private radio stations transmit at

very low power and therefore have only

a limited range; furthermore, if they only

operate on a single frequency, RDS and

diversity will be unable to find a signal

offering higher-quality reception.

Dolby B and C are a noise suppression

system for cassette replay.

High frequencies are raised during re-

cording and suppressed during replay.

As audio hiss consists mainly of high

frequencies and occurs above all during

replay, it is reduced in this way.

Dolby and the symbol are regis-

tered trade marks of Dolby Laboratories

Licensing Corporation.

Only switch on when playing cas-

settes recorded using Dolby, as

reproduction will otherwise sound

dull.c

Digital Sound Processing

A sound system which fascinates the

listener with its tremendously natural,

precise sound reproduction. Satellite

units containing sub-woofers, mid-

range speakers and dome-pattern

tweeters produce a spacious but subtle

sound quality. A 6-band equalizer is

provided for individual adjustment of

the frequency range. It can also simu-

late the acoustics of three different en-

closed spaces: a concert hall, a jazz

club and a cathedral. Three control set-

tings can be stored: tone, reverberation

and equalizer.

In order to take changing condi-

tions during a car journey into ac-

count, the acoustic image is varied au-

tomatically to suit road speed and the

ambient noise level.c

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