Source: https://docs.linn.co.uk/wiki/index.php/Linn_Account_Space_Optimisation
Timestamp: 2019-04-23 18:46:40+00:00

Document:
4.1.1 What should I do if I see an error message saying “Sorry, something went wrong”?
4.1.2 How do I add my speakers to my music system?
4.1.3 How do I add my subwoofer to my music system?
4.1.4 How do I add my Exakt speakers to my music system?
4.1.5 How do I add my surround speakers to my music system?
4.1.6 How is the new version of Space Optimisation different?
4.1.7 Why does Space Optimisation not use a microphone measurement?
4.1.8 How long should an optimisation take to calculate?
4.1.9 How do I apply an optimisation to my music system?
4.1.10 How do I see what filters the optimisation is applying?
4.2.1 Why should I ignore small geometrical features with dimensions less than 10 cm?
4.2.2 Why should I ignore hard furnishings?
4.2.3 How do I add a free-standing wall?
4.2.4 How do I enter my open plan room?
4.2.5 How do I enter the length of a wall?
4.2.6 Why is the minimum grid size on the Floor Plan step 1 cm?
4.2.7 How do I find out the construction materials of my room?
4.2.8 How do I measure my room features?
4.2.9 Why should I ignore soft furnishings and decorations?
4.2.10 Why do features disappear when I change my room dimensions?
4.2.11 How do I add floor and ceiling features?
4.3.1 Where should I put my speakers?
4.3.2 Where do I measure to on my speaker?
4.3.3 How do I measure my listening location?
4.4.1 How do the Environmental options affect the optimisation?
4.4.2 How does the Optimisation Preference affect the optimisation?
This Space Optimisation is a web/internet based application to adjust the music played by your speakers to match the unique characteristics of your room. This is a more advanced version of Space Optimisiation than the Konfig version.
Note: Currently for non-Exakt STEREO systems only, this will be expanded to Exakt and surround systems in the near future.
3. Correctly set the environmental conditions of your room in the Space Optimisation user interface.
If you correctly follow these steps, Space Optimisation should provide an optimisation that will not need any further adjustment. This user guide should therefore be required for reference only.
Check the User guide below for a lot more detail of its operation, capabilities and setup.
If you do not have a Linn Account then you can instantly register for one.
After registration and Log-in you will see the Linn DS players on your network. ADD or REMOVE the Linn DS/DSM players from your Linn account.
Within the “My Account” select Manage systems.
If you have just registered and added these to your Account it may take a couple of minutes to show you Linn DS/DSM setup. If nothing changes then try refreshing your web-browser page, (typically function key F5 or CTRL-F5 in the browser).
The Space tab will not appear until you have assigned speakers to your Linn DS/DSM in the “GENERAL” tab. Note: currently Exakt systems are not currently supported by this page and you cannot assign Exakt speaker in setup.
with the speakers setup you will now be able to create/update/delete/rename your Space Optimisation settings created by this application.
What should I do if I see an error message saying “Sorry, something went wrong”?
click on Start next to Send Activity.
This will record any further activity, until the browser page is next refreshed, for debugging purposes. Now attempt to recreate the issue that caused the error; if you are able to recreate the issue, please contact the Linn Service team, and our engineers will then be able to look into the issue with your recorded activity as reference.
Note that this issue may sometimes be related to an old Space Optimisation on your music system; turning off Space Optimisation in Linn Konfig and then refreshing the browser page in your Linn account may, in some cases, solve this issue.
How do I add my speakers to my music system?
Click on the Add Speakers button below the graphic of your music system; a dialog prompting you to provide the manufacturer and model of your speakers will appear.
Select the manufacturer and model of your speakers using the drop-down menus, then click on the Add button; if your speakers’ manufacturer or model does not appear in the drop-down menu, select Other. See §2.2 of the user guide for further information.
How do I add my subwoofer to my music system?
Subwoofers are currently unsupported within your Linn account; please use Linn Konfig to configure your music system.
How do I add my Exakt speakers to my music system?
Exakt speakers are currently unsupported within your Linn account; please use Linn Konfig to configure your music system.
How do I add my surround speakers to my music system?
Surround speakers are currently unsupported within your Linn account; please use Linn Konfig to configure your music system.
How is the new version of Space Optimisation different?
The new version of Space Optimisation uses highly sophisticated acoustic modelling to model the interactions between your speakers and room; this acoustic modelling is based on the finite-difference time-domain method. A simple two-dimensional analogy to this method of acoustic modelling is of a fishing net laid over a pond; each knot in the net defines a discrete measurement location, so that when a stone is thrown into the pond we can track the resulting ripple by measuring its height at each knot. The spatial discretisation employed by this method of acoustic modelling allows the new version of Space Optimisation to correctly consider the effects of: non-rectangular rooms; the placement of features like doors and windows; and the location and rotation of your speakers. Furthermore, the time-domain formulation of this method of acoustic modelling means that the new version of Space Optimisation is now able to reduce both the energy and decay time of any artificial distortions caused by the interactions between your speakers and room, resulting in both a flat frequency response and a uniform decay time. Finally, the new version of Space Optimisation has been designed to give a better balance of low- and mid-frequency energy.
Why does Space Optimisation not use a microphone measurement?
The aim of Space Optimisation is to remove the effects of your room, in order to uncover the unique acoustic characteristics of your speakers; after all, this is what you fell in love with when buying your speakers. In order to do this, Space Optimisation needs to understand both the interactions between your speakers and room and the unique acoustic characteristics of your speakers; the unique acoustic characteristics of your speakers are then subtracted from the interactions between your speakers and room, leaving only the effects of your room.
An acoustic measurement of the interactions between your speakers and room can have many sources of error which may affect the accuracy and repeat-ability of the measurement, including: the choice of measurement stimulus, such as MLS or a log chirp; external noise, such as traffic noise and vibration; quality and calibration of the microphone, which can introduce distortion; and the microphone location, which can be sensitive to within a few centimetres. The use of acoustic modelling removes these sources of error: the model can apply an ideal impulse as stimulus; the modelling domain is free from noise; the model can use an ideal microphone; and the listening location is well-defined. It can thus be seen that acoustic modelling has a clear advantage over acoustic measurement in understanding the interactions between your speaker and room.
The unique acoustic characteristics of your speakers depend on many factors, including: the shape and size of the drive units and ports; the constructive and destructive interference between the drive units, ports and any cabinet-edge diffraction sources; and the angle between the listening location and your speakers. Therefore, a simple on-axis anechoic measurement of your speakers is insufficient information; what is actually required is an anechoic measurement with your speakers in the exact same configuration as you have them in your home. While some manufacturers do publish anechoic measurements of their speakers, both on- and off-axis, it is extremely unlikely that they will have performed an anechoic measurement of your speakers in the exact same configuration as you have them in your home. The acoustic modelling of such a scenario is, however, straightforward; the model can simply turn your room into an anechoic chamber to obtain the unique acoustic characteristics of your speakers in the exact same configuration as you have them in your home. It can thus be seen that acoustic modelling once again has a clear advantage over acoustic measurement in understanding the unique acoustic characteristics of your speakers.
From the above, it is clear that acoustic modelling is the best approach to Space Optimisation.
How long should an optimisation take to calculate?
The calculation time of an optimisation will depend on your room and speakers, with large rooms containing multiple speakers taking longer to calculate than small rooms containing few speakers; optimisation calculations may take anywhere between four and twenty minutes, with a typical optimisation calculation taking around five minutes. See §1.2.3 of the user guide for further information.
Note: If your optimisation calculation takes longer than expected this may be due to an issue where messages from the cloud are failing to reach your browser; refreshing the browser page <f5> or SHFT<f5>, in your Linn account should solve this issue.
How do I apply an optimisation to my music system?
Any optimisation may be applied to your music system by clicking on the radio button next to its name, in the list of optimisations below the Optimisations heading under the Space tab; note that application of an optimisation does not require a recalculation. See §2.3.4 of the user guide] for further information.
How do I see what filters the optimisation is applying?
Bass and treble shelves are currently unsupported within your Linn account.
Why should I ignore small geometrical features with dimensions less than 10 cm?
Due to the spatial discretisation employed by the method of acoustic modelling used by Space Optimisation small geometrical features with dimensions less than 10 cm can cause inaccuracies in the model. Considering again the analogy of a fishing net laid over a pond, we can imagine a small island in the pond: if this small island lies between knots it will be ignored by our discrete measurements; however, if this small island lies on a knot it will invalidate our measurement at this knot, causing an error which would propagate away from the small island.
Why should I ignore hard furnishings?
Where rooms contain hard furnishings it is recommended to ignore these; at low frequencies such hard furnishings are usually almost acoustically transparent. While certain hard furnishings, such as cupboards and wardrobes, may add extra resonances of their own, the effects of such resonances are usually highly localised.
How do I add a free-standing wall?
Free-standing walls are currently unsupported. However, where rooms contain free-standing walls it is recommended to ignore these; at low frequencies such free-standing walls are usually almost acoustically trans-parent. See §3.4.2 of the user guide for further information.
How do I enter my open plan room?
When entering an open plan room all rooms open to the main listening room should be entered; antechambers and additional cavities will add extra resonances and affect decay times. See §2.3.1 of the user guide for further information.
How do I enter the length of a wall?
In the Floor Plan step you may select any corner with a click, and drag it to any desired location to define the length of a wall. Manual input by typing the length of the wall is not supported, as this would cause a knock-on effect around the other walls of your room as corners are shifted to accommodate the new length. See §2.3.1 of the user guide for further information.
Why is the minimum grid size on the Floor Plan step 1 cm?
Space Optimisation considers only frequencies below 80 Hz; this corresponds to a wavelength of around 4m. A grid size of 1 cm allows for accurate entering of wall lengths to 5 mm, which gives an accuracy of around 0.1 % at 80 Hz.
How do I find out the construction materials of my room?
The construction materials of your room can be found from the building plans. If you cannot obtain the building plans, simply knock on each surface; a hollow sound would suggest Suspended or Partition construction, whereas a sharp sound would suggest Concrete construction. In order of a hollow to a sharp sound, the common construction materials of walls are Partition, Drywall, and Concrete. Similarly, the common construction materials of floors are Suspended Floor and Concrete, and of ceilings are Suspended Ceiling and Concrete. See §2.3.1 of the user guide for further information.
How do I measure my room features?
When measuring room features only the feature itself, and not any trimmings, should be measured: for a door only the door panel should be measured, and not the door frame; for a window only the window pane should be measured, and not the casement. Any non-rectangular features, such as circular windows, should be modelled as a rectangular feature of equal area.
Why should I ignore soft furnishings and decorations?
Where rooms contain soft furnishings, such as carpets and curtains, and any decorations, such as paintings and mirrors, it is recommended to ignore these; at low frequencies such soft furnishings and decorations are acoustically transparent.
Why do features disappear when I change my room dimensions?
When features have been added to a room, and subsequent changes are made to the room dimensions, the features on any affected surfaces will be removed; since the surface dimensions have changed, there is no guarantee that the features on this surface remain valid, and so they are removed. The setup process of Space Optimisation has been designed in a step-based manner; you should complete each step before moving on to the next.
How do I add floor and ceiling features?
Floor and ceiling features are currently unsupported, and so an approximation procedure must be adopted; the presence of floor or ceiling features, such as trapdoors or skylights, will tend to increase the average absorption of the floor or ceiling, therefore the absorption of the floor or ceiling construction material should be increased in the Absorption step. See §3.2.1 of the user guide for further information.
Where should I put my speakers?
The Tune Dem method should be used to find the ideal locations for your speakers; these are the locations where it is easiest to follow the tune. Correct identification of the ideal locations for your speakers is essential if you wish to achieve the full potential of both your music system and Space Optimisation; Space Optimisation is able to recreate the sound of your speakers in their ideal locations, even if you have been forced to move them to a more practical location due to domestic constraints, to give you the best of both worlds. See §2.1 of the user guide for further information.
Where do I measure to on my speaker?
In the Speaker Location step, when a speaker is selected helpful hints will appear in the bottom left-hand corner with guidance on where measurements should be made to on the speaker. See §2.3.2 of the user guide for further information.
How do I measure my listening location?
The listening location should be measured to the average location of the centre of your head during normal listening. See §2.3.2 of the user guide for further information.
How do the Environmental options affect the optimisation?
Increasing the absorption will result in an optimisation that takes shallower, broader cuts at the frequencies artificially distorted by your room; decreasing the absorption will result in an optimisation that takes deeper, sharper cuts at the frequencies artificially distorted by your room. It is important that the absorption of the construction materials of your room is set correctly, otherwise Space Optimisation will incorrectly predict the amount of correction required at the frequencies artificially distorted by your room; incorrect setting of the absorption of the construction materials of your room will result in an uneven bass sound. See §3.2 of the user guide for further information.
How does the Optimisation Preference affect the optimisation?
In the Optimisation Preference step, moving the slider toward Flatter Frequency Response will result in an optimisation that takes deeper cuts and applies less decay control at the frequencies artificially distorted by your room; moving the slider toward Shorter Decay Time will result in an optimisation that takes shallower cuts and applies more decay control at the frequencies artificially distorted by your room. While the optimisation has been designed to give a good balance of low- and mid-frequency energy, your personal preference may differ to the default balance. See §3.3 of the user guide for further information.
Added 'smart' measurements from features. The proximity lines that emanate from a feature will now show the measurement to the closest feature or wall edge. This also works for features inside other features e.g. modelling a window inside a door.
Added drag handles to re-position the feature proximity lines.
Added ability to moved features using the up/down/left/right arrow keys.
The default movement will be 0.01 meters (0.1 meters with the <CTRL> key held).
Added ability to move walls and corners using the up/down/left/right arrow keys.
The default movement will be 0.01 meters (0.1 meters with the<CTRL> key held).
Added ability to move speakers and listening position using the up/down/left/right arrow keys.
The default movement will be 0.01 meters (0.1 meters with the <CTRL>key held).
Added X and Y offset measurements to adjacent corners when selected corner is dragged so that the adjacent walls are at an angle.
Added ability to show the measurement from the currently selected speaker/listening position to the closest angled wall.
This page was last edited on 21 March 2019, at 11:52.

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