Glossary

26 Dolby noise reduction system

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Dolby noise reduction system

The Dolby noise reduction system was developed to reduce the tape hiss noise generated during playback.

The optimum effect of the Dolby NR system is obtained when the same type NR system is used for both recording and playback. If a different type NR system is used, playback is not performed correctly. Make sure that the same type noise reduction system is used for both recording and playback.

Dolby B NR

The most popular noise reduction system used in home audio components. Usually, Dolby NR system corresponds to B NR.

Dolby C NR

Dolby C NR offers improved noise reduction performance over that of the Dolby B NR. It features a superior noise reduction effect, use Dolby C NR to record or playback with this unit.

It is recommended that tapes recorded with the Dolby NR system be marked “B” or “C”, so that they can easily be distinguished.

DPSS (Direct Program Search System)

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The DPSS detects non-recorded blanks of 4 seconds or more between music and enables the following four types of simple playback operations according to the instructions given by pressing operation keys. (It is not possible to perform DPSS operations simultaneously on the two decks.)

1.

Skip play

: By specifying a tune located several tunes beyond (or behind) the tune being played, skips tunes between the current tune

 

 

and the selected tune and starts playback from the beginning of the selected tune. Up to 16 tunes can be skipped in Skip

 

 

Search.

2.

Single-tune repeated

 

playback

: One single tune is played back repeatedly up to 16 times.

Recording with Dolby HX Pro

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What is Dolby HX Pro?

In ordinary recording using high-frequency biasing, the high-frequency bias current, which should be constant, is increased with some recording sources due to the high-frequency component contained in the music, etc. This increase affects the recording characteristics with distorted high frequencies and degraded dynamic range and frequency response.

The Dolby HX Pro circuit detects the high-frequency component contained in the music source being recorded, and reduces excessive bias current to make it constant. As a result, the recording characteristics of high frequencies are drastically improved, and the improved high-frequency reproduction can also be enjoyed even when the tape is played on tape decks which are not equipped with circuit.

Auto-bias function

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The auto-bias function automatically adjusts the tape's bias value to ensure optimum recording performance with each and every tape.

CCRS (Computer-controlled CD Recording System) ¡

When connected with a KENWOOD amplifier,CD player provided with " " marking through the system control cord, this unit allows to use the CCRS, which starts recording automatically after setting the optinum recording level for the CD and tape to be used in recording.

1.The CD starts to be played, and the peak value is sampled from the levels of the signals on the CD.

2.The optimum recording level for the specific CD is determined and set based on the peak value sampled.

3.The recording preparation steps above take about 20~200 seconds, after which the actual recording starts.

4.After recording (when the CD player is stopped or when the tape has run out), both the cassette deck and CD player stop.

Cassette deck

CCRS

 

Automatic recording level setting.

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CD player