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Meridian Audio 565 manual Logic DSP presets, Pro Logic

Models: 565

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Logic DSP presets

Logic DSP presets

DSP presets

The digital surround processor provides five DSP presets specifically designed for reproducing stereo film soundtracks. Three of these presets, Pro Logic, THX Cinema, and TV Logic, are designed for Dolby Surround encoded material. Most films, and many TV programmes and series, are encoded using Dolby Surround, and it is increasingly being used to encode music.

The 565 Digital Surround Processor follows the Meridian philosophy of performing all the signal processing digitally, and the Dolby Surround decoding operates purely in a digital mode. This gives it a far higher performance and a better subjective sound than other analogue-based decoders.

The remaining two Logic presets, Mono and Academy, are designed for films with mono soundtracks.

Pro Logic

Dolby Surround is an encoding system based on a phase- amplitude matrix whose output can be decoded by a very simple passive matrix. Such a decoder gives quite a poor separation.

The Pro Logic system uses psychoacoustically optimised directional enhancement to increase the separation in both left- right and front-back directions. It does this by continuously calculating the position and degree of the currently-dominant sound. This sound is then steered to a greater or lesser extent to that position in the arriving sound. This technique is very successful for cinema and other dramatic programmes.

Further refinements in the Pro Logic decoder include the filtering and delay of the rear surround signal to reduce any tendency for the surround signals to divert attention or become dominant.

The Pro Logic decoder also uses a modified digital Dolby noise- reduction process in the surround signal. Since Dolby Surround material is encoded with this in mind the noise-reduction is permanently operating in this mode.

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Meridian Audio 565 manual Logic DSP presets, Pro Logic

Contents

Meridian 565 Digital Surround Processor Preface Sales and service in the UKSales and service in the USA Designed and manufactured in the UK byIntroduction ContentsUsing the digital surround processorPreface DSP presetsService and guarantee Introduction Introduction500 Series communications The Meridian 500 SeriesProfessional features IntroductionFive-channelsurround system Sample configurationsThree-channelstereo system IntroductionIntroduction THX systemMeridian Analogue Theatre M60C M2500DSP6000 Digital Loudspeakers Meridian Digital Theatre usingMeridian Digital Theatre IntroductionIntroduction A complete multimedia surround systemAn AC-3LaserDisc system LaserDiscIntroduction Specification and accessoriesSpecification Introduction Available accessoriesPCM, 7.1, and MLP versions Introduction DSP presetsMulti-channeldigital sources Dolby DigitalTHX versions IntroductionMPEG Surround Music versionsTHX Cinema IntroductionTV Logic AmbisonicSuper Stereo IntroductionTrifield Music LogicUsing the digital surround processor Using the digital surround processorFront panel Using the digital surround processorTo switch on from standby Switching on and offTo switch to standby Using the digital surround processorTo select a source Selecting a sourceUsing the digital surround processor Musicdigital surround processor Adjusting the volumeUsing the MuteUsing the digital surround processor Changing the DSP presetTo change the DSP preset Music Changing the displaythe digital surround processor MusicUsing the digital surround processor Customising the digital surround processor Customising the digital surround processorCustomising Locking and unlocking the menusprocessor LockedTo change a DSP parameter Changing the DSP parametersUsing a Meridian DSP Loudspeaker Standard parametersCustomising the digital surround processor Standard parametersThese parameters apply to all DSP presets Phase Changing treble, bass, or phasethe current bass setting for example Customising the digital surround processorChanging the listening position Academy presetsCustomising the digital surround Changing the integration of the centreprocessor Press or until the display showsR Delay Changing the spaciousness of the soundStereo, Mono, or Academy presets Customising the digital surround processorTo change the position of the on-screendisplay Changing the lip sync and on-screendisplayTo adjust the lip sync Customising the digital surround processorMusic Changing the DSP preset for a sourceCustomising the digital surround processor TrifieldUser Defining your own presetsCustomising the digital surround processor FootballCustomising the digital surround processor To clear a user-definedpresetPreset Clear StoredDSP presets DSP presetsPro Logic Logic DSP presetsDSP presets THX Cinema Pro Logic and THX Cinema DSP preset parametersDSP presets TV LogicDSP presets TV Logic DSP preset parametersMono and Academy DSP preset parameters Mono and AcademyMusic Music DSP presetsDSP presets TrifieldTrifield only Music and Trifield DSP preset parametersDSP presets Super Stereo DSP presetsAmbisonic DSP presets Ambisonic and Super Stereo DSP preset parametersMusic Logic DSP preset parameters Music LogicStereo and Direct DSP presetsMPEG Music MLP MLP version onlyDolby Digital 5.1 Movie DSP presetsDSP presets MPEGDSP presets 5.1 Movie DSP preset parametersUsing dynamic range control †Dolby Digital and Dolby Digital THX onlyUsing peak-levellimiting DSP presetsService and guarantee Service and guaranteeService and guarantee ServiceGuarantee Glossary Layout Surround PresetSource Steered surroundsType A standard configuration of the digitalresets any configuration and calibration changes GlossaryIndex IndexIndex Index Meridian Lossless PackingIndex