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Summary of Contents for junger d01
- Page 1 digital dynamics processor release 4.0...
- Page 3 INTRODUCTION The digital dynamics processor model d 01 is a professional studio device that processes the dynamic range of digital , as well as analog audio signals. The Digital Dynamics Processor model d 01 is a professional studio device that processes the dynamic range of digital audio signals.
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Page 5: Table Of Contents
CONTENTS The design of the device ..........1.1. Basic functions ............1.2. The Jünger Audio dynamics processor principle ..1.3. A/D-conversion with digital full scale level ....Installation ................. 2.1. Power supply .............. 2.2. Connections ..............2.3. Setting the Digital Reference Level ......Control and display elements .......... -
Page 7: The Design Of The Device
1. THE DESIGN OF THE DEVICE THE DESIGN OF THE DEVICE The d 01 digital dynamics processor can be used to process digital audio signals. The device is primarily designed for use with stereo signals. 1.1. Digital input signals can be connected in the AES/EBU standard format (including S/PDIF) and in the SDIF-2. - Page 8 1. THE DESIGN OF THE DEVICE traditional compressor Traditional compressor and limiter designs only have one control circuit and limiter designs with corresponding attack 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 listening and comparing.
- Page 9 1. THE DESIGN OF THE DEVICE fig. 1: Multi - Band Multi - Loop basic principles of dynamic range processors delay Figure 1 shows the basic principles of dynamic range processors. compressor The compression of the programme signal takes place evenly over the entire range and not only at the upper end above a certain threshold level.
- Page 10 1. THE DESIGN OF THE DEVICE fig.. 2: static characteristics: compressor static output level d01 (dBFS) characteristics: compressor 2.0 : 1 1.6 : 1 1.3 : 1 1.1 : 1 input level (dBFS) compression gain: max. 10 dB parameter: ratio static characteristics: compressor fig.
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Page 11: Installation
2. INSTALLATION INSTALLATION 2.1. The digital dynamics processor d01 is a device under the safety category Schutzklasse 1 in keeping with the VDE 0804 standards and Power Supply may only used with power supply installations built according to regulations. Check the voltage details printed at the rear panel are the same as your local mains electricity supply. -
Page 12: Setting The Digital Reference Level
2. INSTALLATION DEEMPH Switch for manually setting the deemphasis filter. If the filter is switched on Input LED is lighting red. ANALOG OUTPUT Analog output from 24bit D/A-converter Output electronically balanced, XLR connector male adjustable level ( +6...+22 dBu for digital full scale) 2.3. -
Page 13: Control And Display Elements
3. CONTROL AND DISPLAY ELEMENTS CONTROL AND DISPLAY ELEMENTS All functions of the digital dynamics processor d 01 are activated by buttons. The front panel shows easily recognizable function groups. input By pressing the button in the input section the required input signal can be selected. - Page 14 3. CONTROL AND DISPLAY ELEMENTS preset Press the PRESET button to select the one of the four operating programs of the unit which best corresponds to the kind of audio programme material which is being processed. Each operating program has optimum values of dynamic control characteristics (such as attack and release times etc.) for a different type of programme material.
- Page 15 3. CONTROL AND DISPLAY ELEMENTS The expander THRESHOLD can be changed upward or downward with two expander buttons and is visible on the LEDs above them. Four expander thresholds (-60 dB, -50 dB, -40 dB, -30 dB) can be selected. The threshold level is related to the choosed digital reference level.
- Page 16 3. CONTROL AND DISPLAY ELEMENTS limiter The limiter limits the maximum output signal level of the d02 precisely to the set digital reference level. (see also 2.4., and, for details of setting the digital reference level, see under "display"). The limiter should be always active to ensure that output level of the d02 never exceeds the preset digital reference level.
- Page 17 3. CONTROL AND DISPLAY ELEMENTS The two channel LED display has three display modes (input level, output display level and gain change). Press the button in the display section to change the display mode. The selected display mode is indicated by the lighting of the appropriate LED above the display button and to the left of the display meters.
- Page 18 3. CONTROL AND DISPLAY ELEMENTS The DISPLAY button has a second function in addtion to changing the Setup selections display mode. It is used for setting the internal digital reference level, which is using display key the maximum output level which the limiter will allow to be output by the unit. Hold down the display button continuously for a few seconds and the unit will enter internal digital reference level setting mode.
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Page 19: Functional Description
Continuous lighting yellow of an LED also indicates that the digital input signal is a valid AES/EBU digital audio signal which the d01 can synchronise to properly. If the d01 can not synchronise properly to a supplied input signal Digital input signals - AES/EBU... - Page 20 (see also chapter 3.). compression One main task of the digital transmission processor d01 is the compression of low signal levels. The compression- RATIO expresses the effects of a change of the input signal in dB on the change of the output signal in dB.
- Page 21 4. FUNCTIONAL DESCRIPTION The expander becomes effective when the signal level falls below an expander adjustable expander threshold. It is possible to select four thresholds from -60 dB...-30 dB. If the level falls below the threshold , the gain is steadily decreased up to -15 dB.
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Page 23: Application Notes
5. APPLICATION NOTES APPLICATION NOTES possible choose one of eight different control characteristics for the dynamics processor. Each the four 5.1. different sets of control characteristics provides ideal dynamics Presets control for a different type of programme signal as follows: stereo mode 2-channel-mode 1 - universal... -
Page 24: Working With Headroom
The adjustment of the device to this reference level is achieved with pushing DISPLAY and GAIN buttons at the same time (see also chapter 2.4. and 3.). fig. 5: static characteristics: compressor Static output level d01 (dBFS) characteristics: Compressor/ Limiter with -9dBFS Headroom 9 dB Digital Reference 2.0 : 1... -
Page 25: Selection Of Parameters To Increase Loudness
5. APPLICATION NOTES 5.4. The audio signal delay through the dynamics processor is approx. 2ms due to delaying of the audio signal using internal memory. A Influence of signal small delay is deliberately introduced to the audio signal in order to allow delay time limiter and compressor algorithms which 'preview' the... -
Page 27: Applications
APPLICATIONS - mastering of CD, DCC, MD maximum recording level without clipping increased programme density and loudness - digital recording and mixing increased loudness level (compressor, limiter) eliminating noise signals (expander) - FM-Broadcast, TV-Sound signal conditioning matching dynamic range of different programme signals increasing signal loudness level - limiter for digital or analog transmission links always digital full scale signal, without clipping... -
Page 29: Technical Specification
TECHNICAL SPECIFICATION sample rate : 30 kHz ... 50 kHz digital audio data format : 24-bit (AES/EBU) input / output 24-bit (A/D-,D/A-converter) AES/EBU level : 5 Vpp / 110 Ohm, balanced connector : input format : AES professional, AES consumer output format : same as input S/PDIF... -
Page 31: Warranty And Service Information
WARRANTY AND SERVICE INFORMATION JÜNGER AUDIO grants a two-year warranty on the digital dynamics processor MODEL d01 If the unit has to be serviced, please send it, ideally in the original box, to: JÜNGER AUDIO - Studiotechnik GmbH Justus-von-Liebig-Str. 7... - Page 33 KONFORMITÄTSERKLÄRUNG DECLARATION OF CONFORMITY Geräteart: Digital Filter Processor Type of equipment: digital filter processor model d01 Produkt / Product Das bezeichnete Produkt stimmt mit den Vorschriften folgender EU-Richtlinie(n) überein: The aforementioned product complies with the following Europaen Council Directive(s): 89/336/EWG (geändert durch 91/263/EWG und 92/31/EWG)
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