Meridian Digital Audio Processor Meridian 518 Manual de usuario Pagina 1

MERIDIAN 518 USER MANUAL© 1992, 1993, 1995

Overview of 518 10518 User GuideOverview as Resolution Enhancement Processor(Type 1)There are a wide number of applications for this mode of 518: thre

Overview of 518 11518 User Guide562 518CD PlayerLaserDiscDATLPTunerDSPSpeakerDSPSpeakerUsing 518 with DSP LoudspeakersAs the diagram shows, a 518 can

Overview of 518 12518 User GuideOverview as Mastering Processor (Type 2)Using 518 as a Mastering Processor518 RecorderADCDATRecorderMixerThe 518 is cl

Overview of 518 13518 User Guide• De-jittering. This is vital to getting good sound when recording orplaying back from a computer-based sound storage

Using 518 in Hi Fi Systems 14518 User GuideStarting off with 518CheckingBefore turning on the power, check once again that you have made all theconnec

Using 518 in Hi Fi Systems 15518 User GuideNote 518 can be used with or without other Meridian equipment. When itis used as the main system control u

Using 518 in Hi Fi Systems 16518 User GuideThe numbers indicate the number of output bits. C and P represent thechoice of consumer and professional ch

Using 518 in Hi Fi Systems 17518 User GuideShape C uses flat dither and a 9th-order shaper optimised to MAF.Shape D uses high-pass dither and a 9th-or

Using 518 in Hi Fi Systems 18518 User Guide20C16 67Input/output choice and gain setting, (This example indicates 20 bits ofinput and 16 bits of output

Using 518 in Hi Fi Systems 19518 User GuideMuting the soundThe mute facility cuts off the sound by setting the volume level to zero.To mute the sound1

2518 User GuideContentsSales and service in the UK...4Sales and service in the USA...4Designed & manufactured in the

Operation summary 20518 User GuideMemoryIn Resolution Enhancement mode, 518 maintains a continuous memory ofthe DSP, Dither, Gain, In and Out settings

Customising 518: overview 21518 User GuideCustomising 518, an overview518 is a very sophisticated device with a huge number of options to allowyou to

Customising 518: overview 22518 User Guide• whether or not the Bypass DSP option is available.2• whether or not a blank display option is allowed.• wh

Customise 518 using Type 23518 User GuideCaution Some power amplifiers are very susceptible to small surges thatmay result from the process of switch

Customise 518 using Type 24518 User Guide• Source-Logo-input mapping as shown below.Source Logo Type 0InputType 1InputType 2InputCommstypeCD CD D1 D1

Customising 518 using Config 25518 User GuideSelecting the controller modeIn Config mode:1. Press Display until you see a display like:2. Use the and

Customising 518 using Config 26518 User GuideSetting the Blank display option for 518In Config mode:1. Press Display until you see a display like:This

Customising 518 using Config 27518 User GuideThe gain of 518 can either be displayed in absolute dB in the range -99dBto +12dB, or as a Meridian volum

Customising 518 using Config 28518 User Guide3. Use the and Volume keys until the correct logo is indicated – seethe list above.4. Make changes fo

Connecting 518 29518 User GuideConnectionsThere are three types of connection that need to be made to the 518.• power, see page 14.• digital audio, se

3518 User GuideSimple rules for using 518...40Additional technical information...42Specification...

Connecting 518 30518 User GuideCommunications connectionsCommunications connections are only made to other Meridian equipment.The following sections d

Using 518 for Mastering and Multimedia 31518 User GuidePart 2Mastering ProcessorThe Meridian 518 Digital Audio Processor has been designed to allowthe

Using 518 for Mastering and Multimedia 32518 User GuideDescriptionThe Meridian 518 Digital Audio Processor is a general-purpose digital-domain DSP eng

Using 518 for Mastering and Multimedia 33518 User GuideMemoryIn Mastering Processor mode, 518 maintains a continuous memory of theDSP, Dither, Gain, I

Using 518 for Mastering and Multimedia 34518 User Guide20C16 +2Input/output choice and gain setting, (This example indicates 20 bits ofinput and 16 bi

Using 518 for Mastering and Multimedia 35518 User Guide• Out set to the number of bits in the recorder.Transfer to editorCase 5. The recording and edi

About the Noise Shapers 36518 User GuideNoise shaper characteristicsEach noise shaper presents a different degree of subjective noisereduction – we ca

Additional technical information 37518 User Guide518 Operating BackgroundTransparency in digital systemsDigital audio gives a unique opportunity to de

Additional technical information 38518 User GuideUnfortunately, although this process is generally understood, it is notcommon practise to employ corr

Additional technical information 39518 User Guidesource, the average and peak spectrum level declines with frequencyabove a few kHz. Best use is there

4518 User GuideSales and service in the UKMeridian Audio LtdStonehillHuntingdonCambs. PE18 6EDEnglandTel (0) 480 52144Fax (0) 480 459934Sales and serv

Additional technical information 40518 User Guidethe dynamic range of the signal itself. A typical application may be a full-range DSP volume control,

Support information 41518 User GuideHelp!Standby point not litCheck the following:1. There is AC power connected to the socket on the rear of the 5182

Support information 42518 User GuideFCC WARNING: This equipment generates and can radiate radio fre-quency energy and if not installed and used correc

Appendix 1 – Noise Shapes 43518 User GuidePart 3Appendix 1 – Noise ShapesThe graphs in this appendix show the relative noise spectra in dB for thediff

Appendix 1 – Noise Shapes 44518 User Guide0Hz 5kHz 10kHz 15kHz 20kHz 25kHz-30dB-20dB-10dB0dB10dB20dB30dB40dBNoise SpectrumFrequencyAbove: noise spectr

Appendix 1 – Noise Shapes 45518 User Guide0Hz 5kHz 10kHz 15kHz 20kHz 25kHz-30dB-20dB-10dB0dB10dB20dB30dB40dBNoise SpectrumFrequencyAbove: noise spectr

Appendix 2 – Hints on Mastering 46518 User GuideAppendix 2 – Hints on Mastering with noise-shapingThere are a few difficulties associated with employi

Appendix 2 – Hints on Mastering 47518 User Guidedynamic range is extended. Implicit in this theory is the fact that the digitalchannel has near-infini

Appendix 3 – RS232 48518 User GuideAppendix 3 – RS232The 518 may be operated via its RS232 interface.Set the communication settings as follows:• Baud

Appendix 4 –Resolution Enhancement 49518 User GuideAppendix 4 –Resolution EnhancementResolution enhancement in 518 depends on six techniques.1. De-jit

Installation 5518 User GuideIntroductionThe Meridian 518 Digital Audio Processor is part of the 500 Series ofadvanced high-fidelity equipment.In purch

Appendix 4 –Resolution Enhancement 50518 User GuideThe block diagram on page 7 shows the twin phase-lock-loop which 518uses to smooth out the digital

Appendix 4 –Resolution Enhancement 51518 User GuideFigure 3. Showing the audibility of noise in the LP system forcomparison with digital channels.Dyna

Appendix 4 –Resolution Enhancement 52518 User Guideare boosted. This boost process is called pre-emphasis. Now, in thechannel, the energy is more even

Appendix 4 –Resolution Enhancement 53518 User Guidesuch converters are used. Meridian has always used correct analogue de-emphasis in its designs.By w

Appendix 4 –Resolution Enhancement 54518 User Guide10Hz 100Hz 1kHz 10kHz-20020406080100dB splSBMShape CShape DFigure 6. Showing the effect on audibili

Index 55518 User GuideIndex500-Series, 5562, 9565using with, 11Acknowledgements, 4AES/EBUdigital audio connections, 29Analogue sources, 9Autoconfigure

Index 56518 User GuidePre-emphasis explained, 38Programming. see CustomisingRadio interference, 41Recording, 34Remote control, 18Repacking 518. see Un

Notes 57518 User GuideNotes

Notes 58518 User Guide

Installation 6518 User GuidePart 1Unpacking the 518On opening the carton, you should have found the following parts:• Meridian 518 Digital Audio Proce

Overview of 518 7518 User GuidePlanning setup of 518Firstly, the 518 is a product for enthusiasts! We designed it for audio andmultimedia enthusiasts,

Overview of 518 8518 User GuideOverview as Preamp (Type 0)Conventional analogue systems use a 'preamp' or control unit to gathertogether the

Overview of 518 9518 User GuideWhat about analogue sources?562 518CD PlayerLaserDiscDATLPTunerUsing 518 with a 562Analogue sources need to be converte