Bedienungsanleitung Onkyo TA-RW255 (Seite 9 von 16) (Englisch)

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Recording

Making good sound recordings

Dolby Noise Reduction System

Dolby B NR is the system used in most cassette tape decks to

reduce the background noise that is inherent in all cassette tapes.

Dolby Laboratories then developed an even more effective noise

reduction system, Dolby C NR, in response to the demand for

increasingly better sound quality from cassette tapes.

Both Dolby noise reductions systems operate by boosting signals

during recording that fall below a certain input level.

Dolby B and C NR operate on the higher portions of the fre-

quency spectrum using what is called a “sliding band” technique.

This is because tape hiss is most prominent during the quiet, high

frequency portions of a recording. These same signals are then

reduced back to their original strength during playback, thereby

reducing the background noise by the same amount. In order to

operate only when necessary, the Dolby NR system has a varying

effect depending on the input level and frequency of the material

being recorded.

Dolby C NR is capable of reducing tape hiss by 10 dB more than

Dolby B NR. In addition to its noise reducing function,

Dolby C NR has an anti-saturation network that lowers high

input levels before recording them and returns the signals to their

original strength during playback. This raises the high-frequency

saturation level of cassette tapes to allow you to record signals

that would normally cause distortion. This system raises the max-

imum output level of cassette tapes by more than 4 dB at 10 kHz.

Setting the Proper Recording Level

The recording level has an important effect on the sound quality a

tape will have when it is played back. A recording level that is

too high will cause distortion while one which is too low will

lower the signal-to-noise ratio resulting in a tape with excessive

“hiss noise.” It is particularly important to set the recording level

correctly with cassette tapes since they have a much thinner mag-

netic coating than open reel tapes. The thin coating gives the tape

a comparatively low saturation level which can easily be sur-

passed if the recording level is set too high.

The recording level indicators feature a peak-hold function for

the indicators from -6 dB through +6 dB. This can come in handy

when setting the recording level.

CD Synchro Recording System

Once the TA-RW255 is connected to a CD player bearing the

mark (see page 12), press the

button of the CD player will

cause recording to start automatically on the TA-RW255.

1. Insert a cassette with the side to be recorded facing out.

2. Start the CD player.

3. Press the

button to place the unit in the recording

standby mode. Adjust the input level. When the recording

level has been set, stop the CD player.

4. Start the CD player again, and recording will begin simulta-

neously.

Notes:

1. Even if the CD player is stopped during recording, the cas-

sette deck will continue recording.

2. If the cassette deck is in the recording standby mode when

the CD is put in play, the deck will begin recording. When

setting recording levels, always start the CD ﬁrst.

DUBB.STOP

9. Put the source component into record-

ing standby status.

•Temporarily stop CD (or LP) play.

•Rewind the tape to the portion you

wish to start playback.

10. Press the ss

button on this unit and

begin playing the source component.

You can also use the CD Synchro

Recording function if this unit is prop-

erly connected to an Onkyo CD player

bearing the

symbol.

Press the e button.

Press the tt

button.

Stopping recording

Interrupting recording brieﬂy

TA-RW255_En.book Page 9 Tuesday, April 19, 2005 4:36 PM

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