Yamaha DSP-AX861SE - Manual (Page 104)

PARAMETRIC EQUALIZER INFORMATION
102
En
This unit employs Yamaha Parametric Room Acoustic
Optimizer (YPAO) technology to optimize the frequency
characteristics of its parametric equalizer to match your
listening environment. YPAO uses a combination of the
following three parameters (Frequency, Gain and Q factor)
to provide highly precise adjustment of the frequency
characteristics.
■ Frequency
This parameter is adjustable in one-third octave
increments between 32 Hz and 16 kHz.
■ Gain
This parameter is adjustable in increments of 0.5 dB
between –20 and +6 dB.
■ Q factor
The width of the specified frequency band is referred to as
the Q factor. This parameter is adjustable between the
values 0.5 and 10.
YPAO adjusts frequency characteristics to suit your
listening requirements using a combination of the above
three parameters (Frequency, Gain and Q factor) for each
equalizer band in this unit’s parametric equalizer. This unit
has 7 equalizer bands for each channel.
The use of multiple equalizer bands enables more precise
adjustments of frequency characteristics (as in Figure 2).
This is not possible using only a single equalizer band (as
in Figure 1).
Figure 1
Figure 2
Parametric equalizer information
Gain
Frequency
Original frequency
characteristic
Band 1
Frequency
characteristic after
correction
Gain
Frequency
Band 1
Band 2
Frequency
characteristic after
correction
Original frequency
characteristic