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I FRONT PANEL FACILITIES I
I DigitaI-NR
The DigitaI-NR is a noise reduction system developed originally by
PIONEER. It is an innovative system capable of reducing almost all
hiss noise regardless of how the tape being played was recorded.
*(This system can reduce noise based on operations during playback
only.)
When a tape is played by selecting Dolby NR, the Dolby NR circuit
reduces hiss noise then the DigitaI-NR circuit eliminates residual hiss
noise remaining after the Dolby processing, thereby achieving a very
high S/N.
Though this system has been set so that it is activated every time a
tape is played, it is also possible to cancel its operation by the proce-
dure described below.
• Sufficient NR effect may not be obtained in case the level of
noise recorded in the tape is higher than the hiss noise level.
<How to cancel DigitaI-NR>
To cancel the DigitaI-NR, press the DECK 1TIME/COUNT button and
DECK II TIME/COUNT button simultaneously while the power is
ON. (The DIGITAL indicator on the center of the front panel should
turn off,)
To activate the DigitaI-NR again, perform the same operation as
above again. The DigitaI-NR cannot be turned ON/OFF in record-
pause mode. Also note that the DigitaI-NR is always ON in the initial
condition after turning the power from OFF to ON.
DIGITAL FLEX SYSTEM (Except for U.S. model
of CT-W606DR)
• DIGITAL FLEX system: DIGITAL Frequency Level ,_.,_ander sys-
tem.
(hereafter abbreviated to FLEX system)
This system automatically compensates high and low frequency
DIGITAL SUPER AUTO BLE XD (Except for
U.S. model of CT-W606DR)
• With commercially available cassette tapes, sensitivity and fre-
quency characteristics might differ slightly from one another,
even though the same sound adjustment is set for them.
To utilize tape characteristics to the maximum possible and real-
ize an ideal recording which reproduces the source exactly, opti-
mum recording level (sensitivity) and equalizer values must be set
accordingly for each tape. In many conventional tape decks, stan-
dard values are fixed for standard tapes, thus nullifying the subtle
differences between individual tapes. Perfect tuning by ear
through use of fine adjustment controllers for bias and sensitivity
is difficult and requires a lot of effort. It is especially difficult with
a 2-head deck where the recording sound cannot be monitored,
The AUTO BLE on this unit automatically adjusts bias, level and
equalizer by using a microprocessor to set the optimum recording
characteristics accordingly for each tape.
• AUTO BLE XD (XD: eXtended Dynamic range)
This function enables recording with expanded dynamic range in
the high range by combining our unique bias control technology
with conventional AUTO BLE.
After adjusting the above bias, level, and equalization (BLE), this
system checks the tape's recording capability by using relatively
high level high-range test signals. During recording, AUTO BLE
XD controls the bias to maximize the tape's recording capability.
This makes possible a more faithful recording of sources having a
wide dynamic range in the high range.
• You can switch between AUTO BLE and AUTO BLE XD. Refer to
page 13 for the switching procedure.
• Since this system controls the quality of recording itself, the clar-
ity of the sound will be maintained even when the tapes are
played back on another cassette deck.
I DIGITAL TDNS SYSTEM I
level balance above 1 kHz according to the 1/f curve during play-
back.
Generally, the envelope line of sound energy distribution of Hi-Fi
sounds corresponds statistically with the 1/f curve.
The 1/f curve indicates that if the frequency doubles, the leve de-
creases by approx. Half of the original frequency level
• During playback, the FLEX system automatically compensates
tapes with poor sound quality at high frequency levels of 1 kHz
and over, based on the appropriate auditory characteristics.
The FLEX system is designed to improve high frequency repro-
duction in thelO kHz range be up to about 10 dB (max.), particu-
larly in tapes with peer sound cladty and sound presence at high
frequency levels, If the playback tape sound matches the 1/f
curve, the FLEX system defeats compensation adjustment auto-
matically.
• When you press the FLEX button to turn the FLEX system on and
start playback, the FLEX indicator flashes and compensation ad-
justment begins.
Compensation adjustment takes within approximately 3-5 sec-
onds to complete, depending on the music source. The indicator
changes from a flashing to a steadily lit condition when the ad-
justment is completed.
• When the FLEX system is engaged, each music selection isauto-
matically adjusted during playback. System operation status is
indicated by the FLEX indicators (flashing or steadily lit.)
NOTE:
• Whenatapehasbeenrecordedatahighfrequencylevelabove
the compensation/eve/, the FLEX system operation is automati-
cal/y defeated during p/ayback.
8
<RRB1176>
€_
DIGITAL TDNS system: Iape Duplication Noise Supresser system
(hereafter abbreviated to TDNS)
Ordinary tape copy contains much noise due to the hiss noise of the
copy source master tape and the noise due to tape recording bias,
The TDNS is a system which allows to copy tape by reducing the
noise. It reduces the hiss noise in the master tape by applying Oigi-
taI-NR processing and the bias noise by decreasing the recording
bias amount while the played music signal is in the no-signal condi-
tion. (As s result, the noise in the middle of music is equivalent to the
master tape and the noise between music can be reduced,)
• The TDNS copy may not be effective with a master tape in which
the noise between music and music signal are hardly distinguish-
able. In such a case, use the normal-speed or high-speed copy
function,
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