Meridian America Meridian 518 manual Emph +2, ShpB +2

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Using 518 for Mastering and Multimedia

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Memory

In Mastering Processor mode, 518 maintains a continuous memory of the

DSP, Dither, Gain, In and Out settings for each source.

So, if you had determined that, e.g. D1 is an 18 bit source that should always use Gain 0dB but that D2 is 16 bit and can always use Emphasis and +2dB, then 518 will remember these and automatically reconfigure itself for each source as you switch between them.

DSP

1.Press DSP to select the primary processing mode. The display will show:

Bypass 0

Bypass transmits all 24 bits on the input to the output without any processing.

Note When Bypass is chosen, all the other front panel keys are disabled.

1.Press DSP again. The display will show:

Gain 0

Gain has a flat frequency response, but the level of the signal level is adjusted using a precision dithered multiplication. All the front panel keys are available to specify processing.

1.Press DSP again. The display will show:

Emph 0

Emphasis ensures that the output of 518 is always pre-emphasised according to the 50/15µs CD standard. 518 uses precision DSP to pre- emphasis the signal providing the incoming signal is not already pre- emphasised. If the incoming signal is pre-emphasised the red Emph light indicates this.

or:

De-Emph 0

De-Emphprovides the CD de-emphasis function to very high precision

– providing the incoming signal is emphasised (Emph light on).

Note Gain functions in Emphasis and De-Emphasis, and all the front panel keys are available to specify processing.

Display

1.Press Display key to select between the following display formats

Emph +2

Pre-emphasis option and gain setting, or

ShpB +2

Dither mode and gain setting, or

CD +2

Source and gain setting, or

518 User Guide

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Contents 1992, 1993 Contents Simple rules for using Appendix 4 -Resolution EnhancementAppendix 2 Hints on Mastering Sales and service in the USA Sales and service in the UKDesigned & manufactured in the UK by AcknowledgementsAbout this manual IntroductionAbout the 500 Series Conventions used in this manualGeneral precautions Installing yourUnpacking ConnectionsWhats inside a 518? Planning setupOverview as Preamp Type What else do I need to know? What about analogue sources?Overview as Resolution Enhancement Processor Type CD or LaserDisc playback improvementMeridian DSP speaker improvement Meridian Surround improvement Overview as Multimedia Processor Type Overview as Mastering Processor Type∙ Normal ∙ Standby ∙ Type ∙ Config Customising featuresStarting off with Switching onBasic operation StandbyOperating 518 as a Control Unit Type Adjusting the volumeSelecting a source OutFlat DitherShape a Shape BDisplay Advanced operation using the Remote Control Volume control Operating 518 as Resolution Enhancer TypeMuting the sound Menu KeysWith the Remote Control Operation summaryMemory Config an overview Restoring default settingsConfig control settings Customising 518, an overviewCustomising, general procedure How to customiseConfig sources and inputs How to change to Type or ConfigHow to change back to Normal Customising using TypeMaking changes to an existing setup Setting Type ControllerHow to use Config Customising using ConfigConfig Selecting TypesSetting the system address for Selecting the controller modeSetting the product address for Setting the Standby mode forSetting the Emphasis option for Setting the Blank display option forSetting the Volume mode for Setting the Volume displaySetting up sources Choosing source logosVol. dB Changing the input for a source Choosing the Comms type for a source productChoosing the address of a source product Digital audio connections ConnectionsDigital input connections Digital output connectionCommunications connections Connecting to Meridian Digital speakersTo connect to other Meridian 500 Series equipment ConMastering Processor PartAs a Mastering or Multimedia Processor Type DescriptionMeridian 500 Comms warning D1 +2ShpB +2 Emph +2Making Recordings Transfer to the final carrier Transfer to editorShaper Advantage 44.1kHz 48kHz Normal Pre-emphasis Noise shaper characteristicsTransparency in digital systems Operating BackgroundDigital Audio and Quantisation DitherNoise Shaping with dither Dynamic RangePre and De-emphasis Step-down in sample word size Simple rules for usingNo change in sample size Step up in dynamic rangeAdditional technical information SpecificationHelp Maintenance & Service CleaningNoise Part Appendix 1 Noise ShapesAbove noise spectrum for Shape B at 44.1kHz 0Hz 5kHz 10kHz 15kHz 20kHz Audible results of digital errors and editing Vulnerability of the signalAppendix 2 Hints on Mastering with noise-shaping Requirements for D/A conversionAppendix 2 Hints on Mastering Appendix 3 RS232 Handset FunctionsGoTo Functions Jitter and de-jittering Appendix 4 -Resolution EnhancementFrequency Dynamic-rangeDynamic-range optimisation with Pre-emphasis Dynamic-range optimisation with GainShowing CD pre- and de-emphasis curves Dynamic-range optimisation with Noise-shaped Dither DAC or channel enhancement by word-length matching DAC enhancement by using high-frequency ditherIndex ContentsIndex User Guide User Guide