For the purpose of this tutorial you will not connect the audio system yet, but you will just learn how to run the software placing virtual speakers and recording some lines. Hardware connections along with MIDI configurations will be covered later on the manual.

As soon as you launch the software you will see a window named "Hall" containing a stage picture. This picture represent the virtual space where your performance will take place: it can be changed by the user to import his own representations’ halls with customized graphics or still images.

If you import a different picture (just put a pict file named default in the resources folder) you need to re-define your actual space dimensions. You may also need to redraw the screen (press ‘d’ lowercase) during this operation.

From the “Settings” menu choose “Define Space”. A window with 2 sliders will appear; the horizontal slider represent the lenght of your room and the vertical one the width. Choose “show” from the pop up menu to see the lines space limits. Measures are expressed in meters; of course this is just a virtual representation of the area and it will be used to determinate precise placement of speakers.

Drag the horizontal and vertical faders until they cover the entire area. Choose “hide” from the pop up menu when you’re done.

You have just determinated the dimensions your room, you may now close the Define Space window by clicking on the upper left standard Mac close box.

Note: If you don’t change pict file you don’t need to set up the space since the default stage that appears when you launch the program is already setted up.

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Once you have defined your working space as in step 1, you're ready to positionate accurately your speakers into the working area (represented by the grey rectangle).

Speakers placement is a simple operation, but since involves mouse coordinates it is recomended to follow the procedure using key comands instead.

-press ‘s’ (lowercase) on your Mac keyboard, this will place you into the Set Speakers mode.
-press ‘1’ to activate speaker n.1 and click to the desired position within your virtual space to place the speaker (on the transport window you may check mouse coordinates scaled in meters according to the define space settings).
-repeat this last point for speakers 2 to 8 (or less if you need less speakers)
-press ‘s’ again to esc the Set Speakers mode and release mouse functionality.

You are now ready to work (you can always change speakers’ position repeating the procedure above).

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3DTS software works on 2 different basic algorithms to determinate speakers’ dynamic reaction to audio signals in relation to their distance: Output Levels and Tables.

From the Setup menu choose the item Output Levels.

You will see a 8 faders console, this represent the total maximum volume for each speaker. This in a multichannel situation represents the actual distance area covered by the speaker. For example a hi-level setting for speaker n.1 means that it will play some audio also if you are close to speaker N.2. At the opposite a low level means the speaker will start to react only if you are close enough to it.

This setting is very important to determinate the degree of separation you need among the speakers and can be changed at any point since the movements’ algorithms are read in real time through Output Levels settings during playback. The faders’ range automatically change to fit the hall dimension as defined in Step 1.

For example: if you need to create a motion on speakers 1 to 4 with a soft pad synth atmosphere it might be convenient to have some little sound on all other speakers as well, so you may increase faders 1 to 4 during playback till the point you are satisfied with the ambient fx.

At the opposite, if you need to move a fast fx to circle around the hall, it might be a good idea to lower the levels till the point where the speakers are very separated with just a little crossfade.

From the Setup menu choose the item Tables.

Once you have determinated the coverage area of your speaker, you may now decide how the speaker will react. Choose Table 1 for speaker n.1 from the pop-up menu and draw your favorite curve, repeat the procedure for all other speakers.

In this case as well Tables are working in playback in this way you may save and recall different settings and apply them to different projects. You are now ready to record your movements.

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First of all choose Activty from the menu Hall (or press ‘a’ on your Mac keyboard): it will appear a multi-meters really useful to monitor movements activity and speakers reaction. Place it in a convenient way away from your working area.

Movements will be recorded in real time using the mouse and dynamically moving around the speakers in the working area.

1. From the transport window choose Line 1 (choose it also if you see it already).
2. press * to enter in record mode
3. move the mouse all around the speakers and perform your spatializing session.
4. press enter to stop
5. now choose Line 2 from the trasport window
6. repeat step b) to e) etc. You will see each line moving while recording a new one.
7. press spacebar for playback.

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If you prefer to work in real time instead using 3DTS sequencer you may do so choosing Simulate from the action menu (or pressing opt-spacebar).

You may change Line pressing numbers 1-8 on your Mac keypad while you are in Simulate or recording mode.

You may also enable your transport command (stop, rec, play etc.) to be transmitted via MIDI during Simulate to pilot for example an OMS sequencer in background that can be configurated to receive MIDI commands (such as Opcode Vision). In order to do this you have to choose Remote from the Action menu.

All MIDI settings, either for movements and transport, must be configurated using Midi Settings and Remote Settings from Setup menu.

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From menu file you may save your hall; this includes Speakers positions, virtual space, MIDI and Remote settings and Output levels. Tables are note saved within the project and must be saved separately if changed from the default settings. A store button is provided within the Table Window.

Also if MIDI settings are saved with the hall you may always save different configurations using the store button provided in the MIDI Settings window.

Movements data are saved separately using Save Sequence command in the file menu.

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Today certainly there are very efficient tools for the Pro Tools platform like Kind of Loud Smart Pan Pro that we use and recommend. 3DTS has been and is actually employed for its special psychoacoustic curves and for the movements library that has been created during the past years.

3DTS is actually under development for virtual sets applications were real time surround sound is needed in sync with the camera. 3DTS is also employed in Renaissance Sound Technologies sensor-based interactive installations.

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