Upconversion setting display: upconv, D/a converter digital filter setting display: df, About the d/a converter digital filters – Teac K-07 User Manual
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Upconversion setting
Display: UPCONV>***
o
This setting can be made for each input.
o
During Super Audio CD playback, the DSD signal is sent directly to
the D/A converter.
ORG (original)
The original input signal is sent directly to the D/A converter without
upconversion.
2Fs
32kHz, 44.1kHz and 48kHz sources are upconverted to double val-
ues of 64 kHz, 88.2 kHz and 96 kHz, respectively, and then sent to
the D/A converter.
4Fs
32kHz, 44.1kHz, 48kHz, 88.2kHz and 96kHz sources are upconverted
to double or quadruple values of 128 kHz, 176.4 kHz or 192 kHz and
then sent to the D/A converter.
DSD
The signal is converted to DSD digital format, and then sent to the
D/A converter.
D/A converter digital filter setting
Display: DF>***
o
This setting can be made for each input.
o
During Super Audio CD playback or during conversion to DSD for-
mat, this is automatically set to the dedicated DSD filter.
OFF
No digital filter is used by the D/A converter.
o
Using this setting, high-frequency harmonic components will be
output. If noise occurs because of cross modulation from high-
frequency harmonic components, for example, set “DF” to “FIR” or
“S_DLY” instead.
FIR1
The cutoff frequency of the FIR-type filter varies according to the
input sampling frequency.
FIR2
Regardless of the input sampling frequency, a FIR-type filter with a
cutoff frequency of about 80 kHz is used.
S_DLY1
The cutoff frequency of the S_DLY-type filter varies according to
the input sampling frequency.
S_DLY2
Regardless of the input sampling frequency, an S_DLY-type filter
with a cutoff frequency of about 80 kHz is used.
About the D/A converter digital filters
FIR-type digital filters
This type of filter has an established reputation for sound quality
and features tonal quality with both dense, rich sound reverbera-
tions and crisp sound transients.
S_DLY-type digital filters
This type of filter has no pre-echo in the impulse response and fea-
tures natural sound attack and reverberation for a tonal quality that
is close to the original.