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How to operate the Sound Adjustment Mode
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XII
For example, when adjusting the HPF, frequencies that are lower than the specified frequency are
progressively dampened, rather than simply not being played back at all. The "slope" adjustment
function is the function that is used to adjust these dampening characteristics.
The slope characteristics of a filter are such that with larger slope values (for example 12 dB/oct),
the slope becomes steeper, and so the amount of sound mixing in with neighboring bands becomes
less so that only the target band is played back. However, it also causes the merging of sound
between speakers to become poorer and can result in greater distortion.
• The crossover function is a filter that allocates the specified frequency bands.
• A high-pass filter (HPF) is a filter that cuts out frequencies that are lower than the specified
frequency (bass range) and allows higher frequencies (treble range) to pass through.
• A low-pass filter (LPF) is a filter that cuts out frequencies that are higher than the specified
frequency (treble range) and allows lower frequencies (bass range) to pass through.
• The slope is the signal level at which frequencies that are one octave higher or one octave lower
are dampened.
This system supports the basic speaker systems which comprise front speakers, rear speakers and
an added sub-woofer if necessary. In such cases, the crossover can be used to apply the HPF to the
front and rear speakers and the LPF to the sub-woofer so that the sound from all speakers merges
properly.
20Hz 20kHz
63-200Hz
Bass range
(woofers)
Medium range (Front and rear speakers)
HE.2(*2(