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R o o m

c o r r e c t i o n

3 9

To change the axes

• Click the

Axes…

button in the

Plot measurement

window.

The

Set axes

dialogue box allows you to set the range of the x, y,

and z (waterfall plot only) axes:

• Click the

Update

button to update the axes.

To repeat measurements

You can repeat measurements for one or more channels;

for example, if an external sound interfered with an existing

measurement.

• Click with the right mouse button on the measurement you want

to repeat, then click

Speakers…

on the context menu:

The following dialogue box allows you to select which channels

you want to repeat:

• Select the channels you want to repeat, or click the

Toggle

button to swap the set of selected channels.

• Click the

button to confirm your selection.

The following dialogue box warns you that the existing

measurements will be overwritten:

• Click the

Yes

button to continue, or the

button to retain the

existing measurements.

• Click the

Measure…

button to measure the specified channels.

Содержание Configuration Program

Страница 1: ...Meridian Configuration Program Guide...

Страница 2: ...4 7111 Fax 1 404 346 7111 Developed in the UK by Meridian Audio Ltd http www meridian audio com Copyright 2003 Meridian Audio Ltd Boothroyd Stuart Meridian Meridian Meridian Digital Theatre Meridian L...

Страница 3: ...oducts Adding a controller 7 Products Inserting a source 10 Products Adding speakers 14 Soft keys 17 Bass management 18 Speaker distances 20 Pre calibration store 21 Post calibration fetch 22 Speaker...

Страница 4: ...C o n t e n t s i v...

Страница 5: ...to designing audio products and presents a graphical representation of your whole system It allows you to create a single configuration file representing the settings of each product in your system a...

Страница 6: ...preset and other names using the keyboard You can edit the G Series soft keys If your controller is a digital surround controller you can take advantage of Meridian Room Correction You can set up mul...

Страница 7: ...s area Tabs to add new products Resource Bar Controller Sources Speakers G e t t i n g s t a r t e d 3 The Meridian Configuration Program window The following illustration shows the key features of th...

Страница 8: ...ram Insert the Meridian Configuration Program Installation CD ROM The Setup program should be run automatically when the CD ROM is inserted If not locate setup exe on the CD ROM and run it The Setup p...

Страница 9: ...ridian Configuration Program is to click the links in the Breadcrumb trail and Information bar at the top of the window for example The Breadcrumb trail shows a sequence of hyperlinks to pages you hav...

Страница 10: ...eadcrumb trail The Products page will then be displayed This allows you to define the products in your system and indicate how they are connected together Getting help For more detailed information ab...

Страница 11: ...specify the type of controller Select G68ADV from the drop down list and click the OK button to add the product You will then be asked whether you want to fetch an existing configuration from the cont...

Страница 12: ...the computer Connect a serial cable between the product and your PC Follow the instructions in Post calibration fetch page 22 Performing other actions Click with the right mouse button on most objects...

Страница 13: ...her than a drop down list If you have changed the value of a property an is shown after its name Restoring a property to its default value Click the property with the right mouse button and click Reve...

Страница 14: ...Program will use a set of connections which match the back panel screening of the controller to make wiring up straightforward Click the Finish button to make the recommended connections The connecti...

Страница 15: ...up to five characters to identify it on the front panel display Click the source with the right mouse button then click Rename on the context menu The following dialogue box allows you to enter a new...

Страница 16: ...controller that you want to connect When you release the mouse button the cable will be connected If the connectors are incompatible a stop cursor will be displayed Removing a connection Drag from on...

Страница 17: ...source For example if your satellite receiver includes a digital coax output you can add a connector for this Click one of the source s existing connectors with the right mouse button point to Connect...

Страница 18: ...ndling or Small otherwise Click the OK button to add the speakers The speakers will be added to the appropriate points in the layout and the connections will automatically be made between the speakers...

Страница 19: ...n Click G57 on the Amplifier type drop down list and click the OK button to add the amplifier The G57 will automatically be connected up to the appropriate analogue output on the digital surround cont...

Страница 20: ...or help in wiring up the system On the View menu click Review Pages Additional Speaker connections and Controller connections pages will be available in the Breadcrumb trail Click Speaker connections...

Страница 21: ...and click Rename Source on the context menu All occurrences of the source in the soft key sets will be changed Clearing a soft key Click the soft key with the right mouse button and click Remove on t...

Страница 22: ...bass is handled in the system for each of the three speaker layouts The settings are automatically set to recommended values and can be ignored for a simple configuration Click the Next link in the B...

Страница 23: ...er option allows you to set the crossover frequency for the subwoofers This is disabled if the subwoofers are only handling the LFE The Meridian digital surround controllers provide very high quality...

Страница 24: ...e so the loudspeakers neatly fit in the screen Q u i c k t o u r 2 0 Speaker distances The Speaker distances page gathers information about the relative positions of the speakers in your system and th...

Страница 25: ...ies of listening tests To connect the serial cable Connect one end to the RS232 connector on the back panel of the controller in your system Connect the other end to one of the serial ports on your co...

Страница 26: ...ion fetch page fetches the calibrated settings from the digital surround controller so you can complete the configuration Click the Start button to start the fetch When the fetch is complete Click the...

Страница 27: ...r type in the new number or select the appropriate value from the drop down list Q u i c k t o u r 2 3 Speaker properties The Speaker properties page allows you to check or edit the calibration of the...

Страница 28: ...Room Correction procedure This is optional and you can skip this stage by clicking the Next link in the Breadcrumb trail For information about running the Room Correction procedure see the chapter Roo...

Страница 29: ...me Restoring a preset to its default value Click the preset with the right mouse button and click Revert to Default on the context menu The menu option shows the default value For full information abo...

Страница 30: ...nt to be used for the default on the drop down list Q u i c k t o u r 2 6 Preset mapping The Preset mapping page allows you to specify the default DSP preset selected for each source and each audio fo...

Страница 31: ...his page stores the settings to the G68 Connect the serial cable For more information see Pre calibration Store page 21 Click the Start button to store the settings When the store has completed Click...

Страница 32: ...iguration It is recommended that you save a copy of the final configuration document on your PC with an appropriate name so that you can refer to it again at a later date if necessary On the File menu...

Страница 33: ...the room such as the position of large items of furniture or with curtains open or closed How room correction profiles are calculated Calculating a room correction profile is a time consuming and mat...

Страница 34: ...f parallel facing walls and unfortunately these are the ideal conditions for low frequency resonances within the room The wavelength of low frequency sounds is relatively large so even bookcases and c...

Страница 35: ...Store button on the Room Correction store page After successfully storing the configuration to the surround controller the MRC set up wizard will be displayed Click the Next button to continue The nex...

Страница 36: ...indicated by the reading going above 0dB into the red range of the meter and on others by the word high appearing on the display The MRC set up wizard will then indicate whether the test was successfu...

Страница 37: ...the automatic room correction process Click the Start button to begin A countdown dialogue box will give you time to leave the room The Room Correction program will then present a test tone to each lo...

Страница 38: ...ill then be given the option of saving the settings Click the Yes button to save the settings and return to the Meridian Configuration Program All the room correction settings and measurements will be...

Страница 39: ...pplies to eg MusLog or MusLogMov What next You have now completed the Auto set up which creates a recommended set of room correction profiles In most situations this is all you need to do in order to...

Страница 40: ...hown in bold The Measurements panel gives you the option of viewing or comparing the measurements You can also repeat the measurements for individual speakers for example if an external noise interfer...

Страница 41: ...t after time zero and then decays rapidly depending on the amount of reverberation in the room Any additional peaks in the response indicate resonances set up by the initial impulse Low frequency resp...

Страница 42: ...at the corresponding frequency The room correction profile aims to identify the strongest resonances and to reduce the decay time of each strong resonance to the average decay time for the room To co...

Страница 43: ...urement Click with the right mouse button on the measurement you want to repeat then click Speakers on the context menu The following dialogue box allows you to select which channels you want to repea...

Страница 44: ...account of different configurations of the room such as with curtains open or closed On the Measurements panel click the Add button A new measurement set will be added to the list with the default na...

Страница 45: ...h the default name profile Select the speaker layout from the Layout type drop down list Repeat to create profiles for each of the other layouts To build the filters for a profile Select the profile i...

Страница 46: ...ave more than one measurement set the following dialogue box is displayed to allow you to select which measurement set you want to use for the filters Note The process of building filters is computati...

Страница 47: ...ill be allocated in order of priority Each channel is limited to a maximum of 20 filters a two channel system therefore has a limit of 40 filters To store profiles temporarily to the digital surround...

Страница 48: ...t of the filters for each channel together with the parameters for each filter Select the channel in the Channel list to display the filters for that channel The columns give the filter number centre...

Страница 49: ...bandwidth of the filter You can edit each parameter of the filter interactively as described in the following sections Centre frequency Drag the vertical bar to the left or right on the filter respon...

Страница 50: ...click the controller with the right mouse button then click Fetch on the context menu Run the Meridian Room Correction program When the Set up wizard is displayed click the Cancel button Select the P...

Страница 51: ...nd Controller Installation Guide To change other settings directly on the digital surround controller For information about changing other configuration settings on the digital surround controller ref...

Страница 52: ...is based on the Power and SNR signal to noise ratio values In most rooms and with most SPL meters Power will usually be in the range 25 to 35 and SNR will usually be in the range 44 to 60 The larger t...

Страница 53: ...1Vrms allows a signal of 2 8Vpp A sensitivity of 1V is recommended for use with most SPL meters though 0 7V may be preferable for those with lower level output Power OK SNR less than 18 The following...

Страница 54: ...ures you can reduce the number of retries However it is better to follow the steps described below to improve the measurement conditions The better the measurement the more accurate the results when c...

Страница 55: ...ayout to reduce the gain of the channel Use the reduced gain setting for the room correction measurements then return to the correct level for a calibrated system after running room correction measure...

Страница 56: ...R o o m c o r r e c t i o n 5 2...

Страница 57: ...ncy response 37 M measurements comparing 38 displaying 36 multiple 40 repeating 39 Measurements panel 36 Meridian Configuration Program window 3 O Options View menu 21 P Plot measurement window 38 Pos...

Страница 58: ...ttings 46 filters 41 44 profiles 29 41 troubleshooting 48 Room Correction store page 24 S serial cable connecting 21 settings storing 27 Soft keys page 17 source inserting 10 speakers adding 14 Speake...

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