TEAC NT-505 Owners Manual English Francais Espanol - Page 22

Settings continued, Upconversion, PCM digital filter

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Settings (continued) Upconversion Use to activate the upconversion circuit when receiving PCM signals. oo See page 13 for the relationships between input sampling fre- quencies and sampling frequencies after upconversion. oo During MQA playback, 4× Fs upconversion will be used regard- less of the setting. MENU UPCONVERT OFF OFF The original input signal is sent directly to the D/A converter without upconversion. 2× Fs If the input audio signal is less than 2× a standard sampling frequency, it is upconverted 2× and then sent to the D/A converter. 4× Fs If the input audio signal is less than 4× a standard sampling frequency, it is upconverted 4× and then sent to the D/A converter. 8× Fs If the input audio signal is less than 8× a standard sampling frequency, it is upconverted 8× and then sent to the D/A converter. DSD 256 DSD 512 The input source is converted to DSD digital format, and then sent to the D/A converter. PCM digital filter This sets the type of digital filter used when converting PCM signals from digital to analog. MENU DIGITAL FILTER(PCM) OFF Sharp roll off An FIR filter with a steep roll-off is used to sharply cut signals outside the audio band. Slow roll off An FIR filter with a slow roll-off is used to gently cut signals outside the audio band. Short Delay Sharp A short delay filter with a steep roll-off is used to sharply cut signals outside the audio band. Short Delay Slow A short delay filter with a slow roll-off is used to gently cut signals outside the audio band. Low dispersion A short delay filter with low dispersion that improves lag characteristics in high frequencies is used. OFF No digital filter is used. oo When receiving signals at 352.8 kHz, 384 kHz, 705.6 kHz or 768 kHz, the digital filter will be disabled during playback regardless of this setting. oo During MQA playback, the PCM digital filter setting is disabled and Short Delay Slow is used. Note about the digital filter during PCM playback FIR-type digital filters This type of filter has an established reputation for sound quality and features tonal quality with both dense, rich sound reverberations and crisp sound transients. Short Delay-type digital filters This type of filter has no pre-echo in the impulse response and features natural sound attack and reverberation for a tonal quality that is close to the original. 22

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22
Settings (continued)
Upconversion
Use to activate the upconversion circuit when receiving PCM signals.
o
See page  13 for the relationships between input sampling fre-
quencies and sampling frequencies after upconversion.
o
During MQA playback, 4× Fs upconversion will be used regard-
less of the setting.
MENU
UPCONVERT
OFF
OFF
The original input signal is sent directly to the D/A converter
without upconversion.
2× Fs
If the input audio signal is less than 2× a standard sampling fre-
quency, it is upconverted 2× and then sent to the D/A converter.
4× Fs
If the input audio signal is less than 4× a standard sampling fre-
quency, it is upconverted 4× and then sent to the D/A converter.
8× Fs
If the input audio signal is less than 8× a standard sampling fre-
quency, it is upconverted 8× and then sent to the D/A converter.
DSD 256
DSD 512
The input source is converted to DSD digital format, and then sent
to the D/A converter.
PCM digital filter
This sets the type of digital filter used when converting PCM signals
from digital to analog.
MENU
DIGITAL FILTER(PCM)
OFF
Sharp roll off
An FIR filter with a steep roll-off is used to sharply cut signals out-
side the audio band.
Slow roll off
An FIR filter with a slow roll-off is used to gently cut signals out-
side the audio band.
Short Delay Sharp
A short delay filter with a steep roll-off is used to sharply cut sig-
nals outside the audio band.
Short Delay Slow
A short delay filter with a slow roll-off is used to gently cut signals
outside the audio band.
Low dispersion
A short delay filter with low dispersion that improves lag charac-
teristics in high frequencies is used.
OFF
No digital filter is used.
o
When receiving signals at 352.8 kHz, 384 kHz, 705.6 kHz or 768 kHz,
the digital filter will be disabled during playback regardless of this
setting.
o
During MQA playback, the PCM digital filter setting is disabled
and Short Delay Slow is used.
Note about the digital filter during PCM playback
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.
Short Delay-type digital filters
This type of filter has no pre-echo in the impulse response and
features natural sound attack and reverberation for a tonal qual-
ity that is close to the original.