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WEISS GAMBIT DS1-MK2, Руководство по эксплуатации

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OPERATING  INSTRUCTIONS  FOR  GAMBIT  DE-ESSER/COMPRESSOR DS1-MK2

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  Weiss Engineering Ltd., Florastr. 42, CH-8610 Uster

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 +41 1 940 20 06    

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 +41 1 940 22 14    

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 http://www.weiss.ch    

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 [email protected]

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Graphic 2: Display Elements

Graphic 1: Front Panel Elements

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Содержание GAMBIT DS1-MK2

Страница 1: ...audio weiss engineering ltd Florastrasse 42 8610 Uster Switzerland 41 1 940 20 06 2 41 1 940 22 14 8 http www weiss ch http www weiss highend com GAMBIT DS1 MK2 OPERATING MANUAL Software Version 0S 2 0 DSP 2 0 ...

Страница 2: ...E ESSER COMPRESSOR DS1 MK2 FRONT PANEL Weiss Engineering Ltd Florastr 42 CH 8610 Uster Page 2 of 29 41 1 940 20 06 2 41 1 940 22 14 8 http www weiss ch weiss weiss ch FRONT PANEL Graphic 2 Display Elements Graphic 1 Front Panel Elements ...

Страница 3: ...hic 1 Front Panel Elements Ê Menu and softkeys p 6 Ë Snapshot keys p 13 Ì Preset keys p 13 Í Gain Data controller p 7 Î Crossover controllers p 11 Ï Envelope follower controllers p 9 Ð Ñ Non linear transfer curve controllers p 10 Display Refer to Graphic 2 Display Elements Gain value p 7 Crossover setting frequency selective mode only p 11 Non linear transfer curve and signal metering p 10 Status ...

Страница 4: ...er operation combine speed and ease of use with complete control over audio process ing This and the ability to remote control parameters and snapshots makes the DS1 MK2 the perfect tool for the recording and mastering engineer Processing 24bit digital input internal 40bit floating point arithmetic dithered output for 16bit 20bit or 24bit wordlengths Transparent phase linear crossover for frequenc...

Страница 5: ...MK2 v1 3 The main new enhancement is the parallel com pressor option To read about operating and op tions of the parallel compressor turn to p 12 This way of using a compressor was motivated by Bob Katz here is what he says about it on the Mastering Webboard You want a patch that compresses without stomping on the attacks at all preserves tran sients but gives you great inner detail You have one c...

Страница 6: ...ins a peak hold and an over hold for each channel To reset these values press key B twice Peak Hold The numeric peak value is measured relative to 0dBFS digital full scale Use this value to set the optimum gain for a spe cific session Reset it for every session by pressing key B twice Over Hold Whenever an over is encountered the boxes to the side of the peak hold values are marked The functions o...

Страница 7: ...ner of the icon is inverted For details on dither refer to chapter Dither p 13 Overall Gain There are two gains one pre limiter and one post limiter as depicted in Graphic 4 Graphic 4 Output section When touching the gain controller Í the re quired gain can be selected from a menu To change the output gain press softkey D If an arrow appears inside the output gain window the output gain can be adj...

Страница 8: ...d to gener ate the gain control signal The audio passing through the mainchain is delayed by a fixed amount of time determined by the overall de lay By branching the signal out of the delay line the sidechain sees the signal before it reaches the output thus allowing look ahead compared to the mainchain The resulting corrected output signal has no overshoots no leading edge distor tion or other si...

Страница 9: ...velier sound In this case engage the safety limiter see p 7 to catch the resulting overs Experimenting will be necessary for best results Release and Average The input signal is moni tored with two different methods peak amplitude and RMS value The peak amplitude is the pro gramme portion we don t perceive as very loud however which can easily cause overloads The RMS value of the programme materia...

Страница 10: ...setting to compensate for the overall gain that the expander causes This can potentially cause overs for loud signals in the expanded band it is therefore good practice to engage the safety limiter see below The expander can only amplify gain differ ences This means that it cannot create a dynamic signal if there was no initial gain difference as is the case in computer gener ated music or with ex...

Страница 11: ...ame amount used as delay in the compressor stage see Graphic 5 p 8 This mode is completely transparent if no gain reduction is applied A special feature of this mode is the monitor function Pressing this key allows you to listen directly to the processed band ideal for zooming in on of fending material and listening to the effect of the compressor stage If monitor is active the output peak hold an...

Страница 12: ...the compressed signal can be filtered before com pression Using the monitor function one can listen to the filtered signal for optimal crossover setup Why parallel compression Read this quote from Bob Katz from the Master ing Webboard You want a patch that compresses without stomping on the attacks at all preserves tran sients but gives you great inner detail You have one control one control only ...

Страница 13: ...lectable is Auto Blacking If auto blacking is activated by marking the 0 IN à 0 OUT option dither will be turned off if the input signal is zero As soon as the input signal changes dither will be turned on again This en sures that pauses between programmes are still digital zero even if dither is activated Snapshots Snapshots are copies of the DS1 MK2 parameter settings This allows recalling compl...

Страница 14: ...ot sets to be backed up Press the menu key then choose the Snap shots and then the Backup option to arrive at the backup display Graph 14 Graph 14 Backup Display Select Create 1 to save the current snapshots to bank 1 Select Restore 1 to overwrite the current snapshots with bank 1 ditto for bank 2 A backup will overwrite safe snapshots Reset To reinstall the factory snapshots you must press the me...

Страница 15: ...etely bypassed with the green bypass key below the mains switch If the bypass key is lit the DS1 MK2 is absolutely transparent making the output signal bit equal to the input signal However the overall delay see chapter Delay is still active While bypass is active key is lit the DS1 MK2 works in preview mode This allows you to change parameters without actually affecting the audio signal Remote Co...

Страница 16: ...ter Page 16 of 29 41 1 940 20 06 2 41 1 940 22 14 8 http www weiss ch weiss weiss ch Software Information Press the menu key then select the Sys tem and the About option This displays a screen with all the relevant information on your DS1 MK2 and how to reach us Have this page ready when you want to report a problem ...

Страница 17: ... AES EBU Channel Status Data The DS1 MK2 allows to convert the incoming Channel Status Data as follows From Consumer to Professional From Professional to Consumer Transparent mode i e Channel Status Data is fed forward to the output without any conversion one exception see below The following tables describe how the Channel Status Data bits are generated in the various con version modes Output sel...

Страница 18: ... max sample length 24bit Bits 3 4 5 101 24 bit word length Bits 6 7 00 Input Consumer format Output Byte 0 Bit 0 1 professional Bit 1 0 audio Bits 2 3 4 Preemphasis according to input Bit 5 0 source fs locked Bits 6 7 Sampling Frequency according to input Byte 1 Bits 0 1 2 3 0001 two channel mode Bits 4 5 6 7 0000 no user bit encoding Byte 2 Bits 0 1 2 001 max sample length 24bit Bits 3 4 5 101 24...

Страница 19: ...1 5 1 4 1 3 1 2 1 1 1 0 0 9 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 0 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 2 3 4 3 6 3 8 4 0 4 2 4 4 4 6 4 8 5 0 5 2 5 4 5 6 5 8 6 0 6 5 7 0 7 5 8 0 8 5 9 0 9 5 10 0 Bandwidth All numbers are fractions of octaves 1 6 1 3 2 3 5 6 1 11 6 1 1 3 1 1 2 3 1 5 6 21 6 2 1 3 2 2 2 3 2 5 6 31 6 3 1...

Страница 20: ...0 1 4 25 1 4 20 1 4 15 1 4 10 1 4 05 1 4 00 1 3 95 1 3 90 1 3 85 1 3 80 1 3 75 1 3 70 1 3 65 1 3 60 1 3 55 1 3 50 1 3 45 1 3 40 1 3 35 1 3 30 1 3 25 1 3 20 1 3 15 1 3 10 1 3 05 1 3 00 1 2 95 1 2 90 1 2 85 1 2 80 1 2 75 1 2 70 1 2 65 1 2 60 1 2 55 1 2 50 1 2 45 1 2 40 1 2 35 1 2 30 1 2 25 1 2 20 1 2 15 1 2 10 1 2 05 1 2 00 1 1 95 1 1 90 1 1 85 1 1 80 1 1 75 1 1 70 1 1 65 1 1 60 1 1 55 1 1 50 1 1 45...

Страница 21: ... 06 2 41 1 940 22 14 8 http www weiss ch weiss weiss ch Dither Dithering algorithm is implemented using the POW R set of algorithms Graph 15 shows the three algo rithms at 44 1kHz and 88 2kHz sampling rates each Graph 15 Output spectrum with 80dBFS 1kHz sine wave dithered to 16 Bits using the three POW R algorithms at 44 1kHz and 88 2kHz respectively ...

Страница 22: ...dwidth Control Change 1011 cccc 00000001 01 cccc Channel No 0vvv vvvv vvvvvvv New Value 0 36 Filter Mode Control Change 1011 cccc 00000010 02 cccc Channel No 0vvv vvvv vvvvvvv New Value 0 limiter 1 Bandpass 2 Lowpass 3 Hipass Preview Delay Control Change 1011 cccc 00000011 03 cccc Channel No 0vvv vvvv vvvvvvv New Value 0 32 Attack Control Change 1011 cccc 00000100 04 cccc Channel No 0vvv vvvv vvvv...

Страница 23: ...cc 00001110 0E cccc Channel No 0vvv vvvv vvvvvvv New Value 0 127 Output Gain Control Change 1011 cccc 00001111 0F cccc Channel No 0vvv vvvv vvvvvvv New Value 0 127 Safety Limiter Control Change 1011 cccc 00010000 10 cccc Channel No 0vvv vvvv vvvvvvv New Value 0 1 Parallel Compressor Control Change 1011 cccc 00010001 11 cccc Channel No 0vvv vvvv vvvvvvv New Value 0 1 Bypass Control Change 1011 cccc...

Страница 24: ...ge number 0 7F Data 9 0nnnnnnn scale set number 10 24 0nnnnnnn 15 Bytes of Snapshot data 25 0ccccccc Checksum without byte one F0 Sysex Command Checksum 26 F7 EOS EOS Dump request Bytecount Value Description 1 F0 Sysex Header 2 00 Manufacturer s ID 3 30 Manufacturer s ID 4 5A Manufacturer s ID 5 08 Model ID 8 Gambit DS1 MK2 6 0000nnnn Device ID Midi channel number 7 00000010 message dump request M...

Страница 25: ...acturer s ID 5 08 Model ID 8 Gambit DS1 MK2 6 0000nnnn Device ID Midi channel number 7 00000100 message send version Message Type 4 8 00000100 OS Version data 9 00000100 DSP Version 10 00000100 Scale Version 11 00000100 Coeff Version 12 F7 EOS EOS PC programming mode Bytecount Value Description 1 F0 Sysex Header 2 00 Manufacturer s ID 3 30 Manufacturer s ID 4 5A Manufacturer s ID 5 08 Model ID 8 G...

Страница 26: ... in the DS1 DS1 MK2 manual to have a proper understanding of the sidechain process The test signal is a repeating sine wave burst with a certain on and a certain off level The frequency of the sine wave is above 10kHz period less than 100 s so there is no influence of the sine wave frequency on the timing behaviour The table below shows the timing parameters set on the DS1 For the static parameter...

Страница 27: ... of the burst As the sidechain reacts to the input signal slowly because of the long attack time the level of the burst is brought to the anticipated level Fig 3 Fig 4 Fig 3 The preview time is now about three times the attack time which gives the sidechain a headstart on the audio signal The result is a proper limiting without overshoot Fig 4 As useful the preview facility in Fig 3 is it can have...

Страница 28: ...h while in Fig 6 there is no release influence visible anymore Fig 7 Fig 8 The following figures show the effect of the automatic release time algorithm and the Average parameter Fig 7 A very short burst duration like a short peak in the music The Release Fast Average and Release Slow parame ters are set to typical values Fig 7 shows that after a short peak the Release Fast time is chosen so that ...

Страница 29: ...longer causing a longer Release Slow portion Fig 10 Still longer burst with even longer Release Slow portion Fig 11 Fig 12 Figs 11 to 14 For these figures the Average time is relatively short causing the average measurement value to follow the peak measurement more quickly than with Fig 7 to 10 The effect is that depending on the burst length there is not that much of an influence of the Release S...

Страница 30: ... INSTRUCTIONS FOR GAMBIT DE ESSER COMPRESSOR DS1 MK2 TECHNICAL DATA Weiss Engineering Ltd Florastr 42 CH 8610 Uster Page 30 of 29 41 1 940 20 06 2 41 1 940 22 14 8 http www weiss ch weiss weiss ch Fig 13 Fig 14 ...

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