Interior Features; Audio System- Page 277

5–19

Interior Features

Audio System

  Multipath  noise

    Since FM signals can be refl ected by 
obstructions, it is possible to receive both 
the direct signal and the refl ected signal 
at the same time. This causes a slight 
delay in reception and may be heard as a 
broken sound or a distortion. This problem 
may also be encountered when in close 
proximity to the transmitter.

Reflected wave

Direct

  Flutter/Skip  noise

    Signals from an FM transmitter move in 
straight lines and become weak in valleys 
between tall buildings, mountains, and 
other obstacles. When a vehicle passes 
through such an area, the reception 
conditions may change suddenly, resulting 
in annoying noise.

  Weak  signal  noise

    In  suburban  areas,  broadcast  signals 
become weak because of distance from the 
transmitter. Reception in such fringe areas 
is characterized by sound breakup.

  Strong  signal  noise

    This occurs very close to a transmitter 
tower. The broadcast signals are extremely 
strong, so the result is noise and sound 
breakup at the radio receiver.

  Station  drift  noise

    When a vehicle reaches the area of two 
strong stations broadcasting at similar 
frequencies, the original station may be 
temporarily lost and the second station 
picked up. At this time there will be some 
noise from this disturbance.

Station 2 
88.3 MHz

Station 1 
88.1 MHz

/C\FCA&('#*A'FKVKQPKPFD

/C\FCA&('#*A'FKVKQPKPFD