E85 Information/Communication
- 31 -
- System comparison - linearity
A frequency response as linear as possible is the prerequisite
for sound reproduction true to the original.
Fig. 23: E85 Linearity comparison of the audio systems: Stereo, HiFi and Top-HiFi
The illustration above shows the permissible range within which
a defined test signal can deviate from the zero line.
- Advantages of the systems
Advantages compared to previous BMW developments
The following advantages characterize the 3 new audio
systems:
- Compared to the E36/7, distinct improvements in the low
frequency range have been achieved.
- Due to the dynamically set parameters (adaptive filters) of the
Top-HiFi amplifier, the sound impression is adapted to the
driving noise characteristic of a roadster.
- The HiFi and Top-HiFi audio systems can be combined with
virtually all radios (exception: radio CD).
Index Explanation
1 Top-HiFi
2 HiFi
3Stereo
KT-10039
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