Adobe 22011292 User Guide - Page 352

338 CHAPTER 20 Multichannel Encoder Some professional sound cards such as the M-Audio Delta 1010/1010LT or 410, Echo Layla24, Frontier Design Dakota and EgoSys WaMi units offer a single Multichannel Device driver, in addition to several individual stereo drivers. For these cards that offer this special "interleaved" multichannel driver, you should select this from the list. For example, for the M-Audio Delta 1010LT sound card that offers this type of driver, it shows up as "M-Audio 1010LT Multichannel, 16 bit." These driver types will accept the 6-audio input from Adobe Audition and automatically route it to the standard Microsoft 5.1 channel configuration listed below. Channel Order When connecting your speakers to the analog outputs of a Multichannel sound card that offers the required interleaved multichannel driver, you should ensure that your speakers are connected in this order to correctly reproduce the 5.1 surround preview: • Out 1 - Front Left speaker (FL) • Out 2 - Front Right speaker (FR) • Out 3 - Center speaker (C) • Out 4 - LFE - Sub Woofer speaker (LFE) • Out 5 - Left Surround (rear) speaker (Ls) • Out 6 - Right Surround (rear) speaker (Rs) Note that the above channel order is also the order in which your Exported 6-channel .wav and 6-channel .wma files will be created. If your project requirements include a different channel order (such as if you are submitting a master for use in a DTS encoded project or other surround format), then you should choose the Export to 6 mono wav files option. Preview Format Selector Use this drop down menu to select the bit rate of the preview playback material that is sent to your sound card. This can be kept at 16 bit, but if your session includes higher bit rate files, and if your sound card supports higher bit rate playback, you can select one of the 24 or 32 bit rates here to allow the preview to more accurately play back the higher bit rate content of your session. Preview Buffer Size Slider This slider is offered to allow adjustment of the size of the buffers used for both the Play Track and Play All functions. The slider can be adjusted to the right to create larger buffer sizes, which can allow for a more stable preview playback at the cost of raising the latency. A higher latency means that it will take longer for you to hear the result of changes made to any sliders or panning adjustments made while previewing. Adjusting this slider farther left will reduce the buffer size that can result in lower latency, but at the cost of less preview stability. If dropouts occur during preview playback, then the best action is to try moving this slider to the right. If you have a fast PC and/or if the session you are working on is a small one with few effects and panning envelopes, it may be possible to reduce the buffer size and take advantage of lower latency.