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DIGITAL

DYNAMICS

PROCESSOR

D02

OPERATIONS MANUAL

rev. 3.1

Justus-von-Liebig-Straße 7, 12489 Berlin, Germany
Telefon: (030) 67 77 21 - 0 Fax: (030) 67 77 21 – 46

www.junger-audio.com

Содержание d02

Страница 1: ...DIGITAL DYNAMICS PROCESSOR D02 OPERATIONS MANUAL rev 3 1 Justus von Liebig Stra e 7 12489 Berlin Germany Telefon 030 67 77 21 0 Fax 030 67 77 21 46 www junger audio com...

Страница 2: ...e of the processing noises typical for dynamic range prossesors such as pumping breathing or signal discolouration The unit is easy to operate and requires only a limited selection of settings All oth...

Страница 3: ...unit 2 4 Setting the Digital Reference Level 3 Control and display elements 12 4 Functional description 18 5 Application notes 23 23 23 24 25 26 26 5 1 Presets 5 2 Processing signals containing emphas...

Страница 4: ...so be achieved 1 1 Basic Functions 1 In addition an analog stereo signal output is available which operates with 20 bit D A converters and enables a rapid acoustic monitoring The increase of signal de...

Страница 5: ...k and release times which have to be adjusted manually by the user An optimal setting of all parameters for dynamic range processing with as little disturbance as possible must be determined by listen...

Страница 6: ...The gain control circuit has time to preview the signal and become active before it reaches the output This is particularly important for the limiter which provides a precisely leveled output signal...

Страница 7: ...range of the input signal to match the dynamic range of the storage or of the transmission system is partly achieved by increasing the level of low level signals the lowest of which might otherwise b...

Страница 8: ...gain max 10 dB parameter ratio 50 40 30 20 10 0 50 40 30 20 10 0 input level dBFS output level d02 dBFS off 5 dB 10 dB 15 dB static characteristics compressor compression gain max 15 dB parameter com...

Страница 9: ...verter with 18 or 20 bit resolution is used It is therefore more important than noise shaping or other dither techniques to use primarily the maximum of available digital dynamic range because this im...

Страница 10: ...2 1 Power Supply 2 2 Connections 2 POWER INPUT IEC mains input connector 230 V 50 Hz UK 240 V 50 Hz JAPAN 100 V 60 Hz USA 127 V 60 Hz with integrated fuse REMOTE for optional serial remote interface R...

Страница 11: ...AES EBU data stream With the digital dynamics processor d02 it is possible to transmit this information without changing or to set these information defined Sometimes it is helpful to change the chan...

Страница 12: ...l mastering and transmission the output level should be the maximum i e the digital reference level should be 0dBFS When working with analog inputs it is very important not to overload the A D convert...

Страница 13: ...frequency at which the A D converter operates is generated internally When ANALOG EXT LED is lit the unit uses the same analogue input audio signal as when ANALOG INT is selected but now the sampling...

Страница 14: ...erence level setting mode The PRESET and the GAIN display flashes and and the GAIN display shows the digital reference level The STEREO 2 CHANNEL mode can now be changed pressing the SELECT button Wit...

Страница 15: ...1 1 1 1 3 1 1 6 1 or 2 1 There is also a compressor off position where the compressor function is turned off In this case none of the ratio LEDs will be lit Compression is partly achieved by increasi...

Страница 16: ...turned off The limiter works with a look ahead time signal delay of approx 2 ms This delay time is present even when the limiter is turned off Two different reference levels can be set one reference l...

Страница 17: ...es overloads which are already present in the input signal When viewing the OUTPUT level the clipping LED does not light since the limiter is ON and ensures that the maximum output signal level can no...

Страница 18: ...few seconds and the unit will enter internal digital reference level setting mode The GAIN display flashes and shows the digital reference level Setup selections using display key The maximum output l...

Страница 19: ...ured input signal sampling frequency is one of the standard frequencies 32kHz 44 1kHz or 48kHz then a corrresponding LED will light yellow in the input section on the units front panel Continuous ligh...

Страница 20: ...sable analog input level without clipping when the unit is supplied is 15dBu Both analog inputs are converted into digital audio signals which can then be processed by the internal digital dynamics pr...

Страница 21: ...dth of 32 bits The use of 32 bit digital audio sample length in calculation ensures that there is no deterioration in signal quality even if AES EBU digital audio data with the maximum word length of...

Страница 22: ...prox 2 ms is built in This delay makes it possible to arrange the algorithm of the limiter in such a way that the control mechanism is activated before maximum level is reached Within the rise time of...

Страница 23: ...o 9dBFs 9dB below the maximum possible level that can be represented digitally then the actual maximum digital level that will be received by the D A converter will be 9dB below the maximum possible d...

Страница 24: ...nd the basic Multi loop principle of the J nger Audio dynamics processors please refer to chapter 1 2 Fixed presets containing optimised parameters for different types of programme signal are used bec...

Страница 25: ...will change to red The static characteristics of the d 02 see also fig 2 usually refers to the digital reference level 0 dBFS dB Full Scale This is useful for most applications of the dynamics process...

Страница 26: ...o signal before changing it That is the signal curve can be changed before maximum level is reached For further details see chapter 1 This delay must be considered before attempting to mix signals pro...

Страница 27: ...imiter which means that the limiter then reduces the signals continually and again reduces the additionally applied amplification The display for Limiter Gain Reduction should be in the region of 0 6...

Страница 28: ...e to more than 110 dB To make this quality audible the CD must of course be played back with appropriate monitoring equipment D A converter amplifier for 20 bit quality noise shaping The disadvantage...

Страница 29: ...n and ADR studios adjusting dynamic range and loudness level of individual takes maximum recording level without clipping A D converter free of overload for general use high performance 24 Bit ADC in...

Страница 30: ...INK A D converter stereo 24 Bit oversampling dynamic range 112 dB RMS 114 dB A weighted input level 12 22 dBu for 0 dBFS adjustable input XLR floating balanced 10 kOhm optional transformer balanced D...

Страница 31: ...a two year warranty on the digital dynamics processor MODEL d02 If the unit has to be serviced please send it ideally in the original box to J NGER AUDIO Studiotechnik GmbH Justus von Liebig Str 7 D 1...

Страница 32: ...tion of the laws of the Member States relating to electromagnetic compatibility Zur vollst ndigen Einhaltung dieser Richtlinie n wurden folgende Normen herangezogen To fully comply with this these Dir...

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