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Содержание Meridian 565

Страница 1: ...Meridian 565 Digital Surround Processor u s e r g u i d e...

Страница 2: ...rporation Canadian patent 1 037 877 Lucasfilm Ltd US patents 5 043 970 5 189 703 5 222 059 Trifield Productions Ltd and Nimbus Records Ltd Dolby Pro Logic AC 3 and the double D symbol are trademarks o...

Страница 3: ...SP parameters 23 Standard parameters 24 Changing treble bass or phase 25 Changing the listening position 26 Changing the integration of the centre 27 Changing the spaciousness of the sound 28 Changing...

Страница 4: ...rvicing your digital surround processor Glossary 47 Index 51 DSP presets 33 Gives technical information about each of the DSP presets with details of the special parameters available for each one Logi...

Страница 5: ...ressively realistic and exciting reproduction of music and cinema sound with support for all the current two channel and multi channel audio formats These include PCM Dolby Digital AC 3 DTS and MPEG a...

Страница 6: ...ing a simple and intuitive control interface 500 Series communications The Meridian 500 Series includes a sophisticated communications link to ensure that any configuration of units will work together...

Страница 7: ...surround processor takes advantage of the additional speaker to create a more realistic and stable three dimensional image of the original recorded sound for outstanding music and cinema reproduction...

Страница 8: ...o provide a complete five speaker surround system The 500 Compact Disc Transport provides an ideal addition to the system for music listening 565 M60C 555 M2500 556 556 A THX system is designed to rec...

Страница 9: ...from the 565 and uses twin digital signal processors for remarkably distortion free performance and a breathtakingly realistic sound DSP5000 565 DSP5000C DSP5000 DSP5000 DSP5000 M2500 The Meridian Dig...

Страница 10: ...ideo switching for composite and S VHS signals such as from a satellite receiver LaserDisc player or video recorder LaserDisc 519 565 Optical RF Optical The digital surround processor can be upgraded...

Страница 11: ...g at 60MHz 7 1 version Z3 card based on an additional Motorola DSP running at 88MHz Precision Digital input output up to 22 bits Internal precision maintained using 24 and 48 bit arithmetic Analogue o...

Страница 12: ...M 7 1 and MLP versions The 565 Digital Surround Processor is available in two versions a PCM version which decodes Stereo Trifield Ambisonic and Dolby Surround materials and a 7 1 version which also s...

Страница 13: ...endations for the best preset to choose for different types of material Multi channel digital sources The 565 Digital Surround Processor supports the three alternative multi channel digital formats cu...

Страница 14: ...red on a DVD without losing any information It can also be used to store four channel audio on a standard CD without any loss of quality Multi channel sources encoded onto two channels Several systems...

Страница 15: ...surround processor can also accept a conventional two channel source such as music on compact disc or a video soundtrack and by analysing the information in the signal separate the two channel recordi...

Страница 16: ...ing Special DSP presets The digital surround processor also includes the following special DSP presets for specific applications Mono and Academy The Mono and Academy presets are designed for reproduc...

Страница 17: ...hapter provides a summary of the functions of the digital surround processor to identify the controls which you use to operate the unit It also provides step by step instructions for operating the dig...

Страница 18: ...splayed on the front panel 4 menu left Selects the previous DSP parameter 5 V menu down Decreases the currently displayed parameter 6 A menu up Increases the currently displayed parameter 7 menu right...

Страница 19: ...of electricity but ensures that the components of the digital surround processor operate at maximum efficiency from the moment you start If you are not going to use the digital surround processor for...

Страница 20: ...e the display will show CD 56 Then after a short delay the display shows the currently selected DSP preset For example M u s i c 5 6 By default the following 12 sources are available CD Radio LP TV Ta...

Страница 21: ...of the rotary volume control on a conventional preamplifier A setting of 87 corresponds to THX reference gain the level at which film soundtracks are mixed For normal to high level listening you shou...

Страница 22: ...e stored for the appropriate audio format Each source has a set of DSP presets associated with it one for each of the alternative audio formats two channel PCM Dolby Digital DTS MPEG and MLP When you...

Страница 23: ...play will step between the options shown in the table opposite In addition the following symbols on the front panel display indicate which of the DSP processing modes are operating Symbol What it mean...

Страница 24: ...Using the digital surround processor 20...

Страница 25: ...und processor provides a sophisticated range of more advanced adjustments for each DSP preset to allow you to tailor the sound This chapter explains how to change these parameters and gives detailed i...

Страница 26: ...menus so that the parameters cannot be accessed To display or change the DSP presets or to define your own presets you first need to unlock the digital surround processor menus To lock the menus Pres...

Страница 27: ...r more information about doing this see Defining your own presets page 31 Standard parameters All DSP presets except Mono and Direct provide the standard parameters shown on the next page Individual D...

Страница 28: ...to 5ms 0 0 The relative delay of the centre Rear 30dB to 10dB 0dB The relative level of the rears Sides 30dB to 10dB 0dB The relative level of the sides R Delay 15ms to 30ms 0 0 The relative delay of...

Страница 29: ...er these menus appear on the speaker menus For more information see the speaker user guide To change the treble Press or until the display shows the current treble for example T r e b l e 1 5 Press A...

Страница 30: ...or Academy presets A conventional stereo system provides a single balance control which changes the relative loudness of the two speakers The 565 Digital Surround Processor provides a more sophistica...

Страница 31: ...centre speaker Press or until the display shows the current centre level for example Centre 0 Press A or V to change the relative level of the centre speaker You can change the relative level by 3dB...

Страница 32: ...e relative delay of the rear or side speakers Press or until the display shows the speaker s you want to adjust For example R Delay 15 Press A or V to change the relative delay of the speakers You can...

Страница 33: ...adjust the lip sync The LipSync parameter is a unique feature of the digital surround processor which allows you to adjust the delay between the sound and the video image by up to one video frame Mos...

Страница 34: ...the Source key on the front panel or the appropriate source button on the remote eg CD If necessary select a signal in the appropriate format For example to change the DSP preset used for DTS compact...

Страница 35: ...layed Press A or V to select the preset you want to modify Change the preset parameters to the values you want to store see To change a DSP parameter page 23 Press Store twice The display shows the ne...

Страница 36: ...ote or Function Clear if you are using a Meridian DSP Loudspeaker For example you could change the name to L a S c a l a When you have entered the name you want to use press Store The display shows S...

Страница 37: ...ach of the DSP presets built in to the digital surround processor It explains the processing performed by each DSP preset and gives details of the types of material you should use with each preset It...

Страница 38: ...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 psychoacousti...

Страница 39: ...d Controller this decorrelation is optimised to give spacious surround sound that has no artefacts disturbing to music or other sensitive sounds in the mix The time synchronisation between loudspeaker...

Страница 40: ...t channels for use when different languages or material are carried on each channel A combined version of the two input channels for use if the material was originally mono and has been conveyed on a...

Страница 41: ...d technique Trifield As for the Music DSP preset the Trifield preset extracts the mono and surround components of the original recording It then calculates the signals for the front left centre and ri...

Страница 42: ...by Surround encoded An advantage over the Music DSP preset is that the front stereo image is more focused and the width of the image can be adjusted Music and Trifield DSP preset parameters Parameter...

Страница 43: ...dio LP or CD The digital surround processor uses accurately matched frequency dependent phase amplitude matrices to decode the signal and construct the signals for each speaker feed The fundamental di...

Страница 44: ...y Ambisonic only Music Logic Music Logic is a music DSP preset with user adjustable steering designed to provide an exciting experience with many types of studio produced music Music Logic DSP preset...

Страница 45: ...or front left and right subwoofers continue to be used With the Direct preset only the left and right main speakers are used There are no special DSP preset parameters MLP MLP version only MLP Meridia...

Страница 46: ...lly high bass levels that Dolby Digital can produce DTS DTS is unusual among the compressed surround formats in that it can deliver high quality music at high bit rates CDs and LaserDiscs are currentl...

Страница 47: ...gital format it allows dynamic range control without the distortion involved in analogue methods The Compress parameter can be set to one of the following options Option Description Off No compression...

Страница 48: ...e subwoofers the parameter is named Max SPL and it sets the peak level limit for the LFE channel If your loudspeaker layout contains no subwoofer the parameter is named Limit and it sets the peak leve...

Страница 49: ...Service and guarantee 45 Service and guarantee...

Страница 50: ...d Guarantee The 565 Digital Surround Processor is guaranteed against defects in material and workmanship for 2 years from the date of purchase The guarantee is void if the 565 Digital Surround Process...

Страница 51: ...right surround and an additional Low Frequency Effects LFE channel which is band limited to 120Hz Dolby Surround The encoding system used for the majority of movies on video and many TV broadcasts Dol...

Страница 52: ...LFE channel Menus The flexible system for choosing options and configuring settings in Meridian products On the 565 the menus are controlled by the A and V keys on the front panel or the MSR MLP MLP...

Страница 53: ...the 12 source keys on the MSR In the 565 you can choose the logo displayed for each source and the input used for it SPL Sound Pressure Level a physical measurement of the level of sound at a particu...

Страница 54: ...Glossary 50 Type A standard configuration of the digital surround processor Selecting a Type resets any configuration and calibration changes...

Страница 55: ...24 27 Digital DSP preset 9 42 dynamic range control 43 Direct DSP preset 12 41 Display changing 19 options 19 Dolby Digital DSP preset 9 42 dynamic range control 43 Dolby Digital encoding 9 Dolby Digi...

Страница 56: ...anging 27 Introduction 1 L LFE DPS parameter 43 Limit DPS parameter 43 44 Lip sync changing 29 LipSync DSP parameter 24 Listening position moving to the left or right 26 Locking the menus 22 Logic DSP...

Страница 57: ...ng the sound 17 Roll DSP parameter 36 40 S S Delay DSP parameter 24 28 S Filter DSP parameter 38 40 Sample configurations AC 3 LaserDisc system 6 five channel surround system 3 Meridian Analogue Theat...

Страница 58: ...U UHJ format 39 Unlocking the menus 22 User defined presets 31 editing the name 31 Using the digital surround processor 13 V Volume adjusting 17 muting 17 W Width DSP parameter 38 40 Y Yaw DSP paramet...

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