Surround Sound in Logic
Surround sound in, whilst synonymous with the film industry offering that extra dimension of realism, is now becoming popular in some circles for extra production with many artists' back catalogues being mixed for the medium. Whether working to picture or in music production, you'll inevitably find yourself being expected to create a surround sound mix at some point. Fortunately, Logic has a great deal of expertise in offering surround sound with the inclusion of surround sound panners on each channel and a 5.1 Reverb Plugin amongst others.
To work with surround sound, in the example 5.1, it is important to ensure that you have the speakers you require to monitor each output. You'll need your main stereo pair of monitors, plus a center speaker, two surrounds (left and right) plus a subwoofer ideally. Connecting these up will usually mean a direct connection from your audio interface or desk to the amplifiers or powered monitors. The connections you make are governed by the Surround Preferences (Logic Pro> Preferences> Audio> Surround).
Within this pane are three tabs relating to the output, the bounce extensions, and the input. The input arrangement should follow logically the output assignments and is used fro making 5.1 recordings. The bounce extensions tab simply refers to the filename extension which is important when preparing for mastering. Concentrating on the output tab, you can select how Logic shows its outputs. Typically this will default to Logic's own interpretation of 5.1. There are options for ITU's and WG-4's output arrangements. The International Telecommunications Union's is standard for 5.1 surround sound for most professionals. However, the WG-4 standard, which can be selected by the button below, is the choice of the DVD forum. At this stage, it is just important that the right outputs are connected to the correct speakers for accurate monitoring.
Surround Sound Plug-Ins
Working in surround sound requires that you think slightly differently when working with effects such as reverberation. You could employ a stereo plug-in or you could choose to use two in tandem for front and rear if need be. Logic has fortunately thought of this and produced an intuitive set of surround ready plug-ins to get you instantly working.
These dedicated plug-ins include the renowned Space Designer whose 5.1 algorithms are superb. Other, 5.1 dedicated plug-ins include: Delay Designer, Chorus, Tremolo, Flanger, Microphaser and Modulation Delay.
The plug-in behaves in exactly the same way as the stereo version, but the response is returned in 5.1 as per the original impulse. To place a surround plug-in in your mix can be simply achieved by selecting it from the menu. Most 5.1 plug-ins can be applied to a mono track whose output will be converted to surround. However these processes are best added to a 5.1 bus or output.
Other plug-ins do not require specific surround algorithms to operate with multi channel information.These will therefore work in "Multi Mono" mode for processing multi channel information. Plug-ins such as the compressor, which utilizes this mode, will show some banks using additional switches located above the main controls that are not found on its stereo or mono counterpart. The Configure switch you to configure which compressor bank is attached to which outputs. Therefore it is possible to strap a compressor across the front speakers, another to the rears and one dedicated to the LFE channel. Alternatively, you might wish to alter this so that the Centre channel has a dedicated ban for use in film work where the dialogue is of paramount importance.
By author Sofia pl