Toyota PRIUS 2012 Navigation System Owner's Manual page 186

DSP CONTROL
1
Press the "AUDIO" button.
2
Touch .
3
Touch the "DSP" tab to display this
screen.
4
Touch the desired items to be set.
5
Touch "OK".
AUTOMATIC SOUND
LEVELIZER (ASL)
The system adjusts to the optimum vol-
ume and tone quality according to ve-
hicle speed to compensate
increased vehicle noise.
1
Touch "Automatic Sound Levelizer".
2
Touch "On" or "Off".
1. AUDIO/VIDEO SYSTEM OPERATION
SURROUND FUNCTION
This function can create a feeling of
presence.
1
Touch "Surround".
2
Touch "On" or "Off".
TONE AND BALANCE
TONE
How good an audio program sounds is
largely determined by the mix of the
treble, mid and bass levels. In fact, dif-
ferent kinds of music and vocal pro-
grams usually sound better with
different mixes of treble, mid and bass.
BALANCE
A good balance of the left and right ste-
reo channels and of the front and rear
sound levels is also important.
Keep in mind that when listening to a
stereo recording or broadcast, chang-
ing the right/left balance will increase
the volume of 1 group of sounds while
decreasing the volume of another.
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