Support for SoundCode LtRt Tools and for SoundCode Stereo LtRt


User Guide

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When my LtRt is decoded, a lot of the music comes out the center speaker, even though the music was all in the L and R channels of the 5.1 mix. What is going on?

The Center speaker in a Dolby Surround/PL1/PL2 system produces stereo imaging that is slightly different than that of a two-speaker stereo system. Most music engineers find this distracting at first, but adjust quickly. Those who mix motion picture sound feel comfortable, as do those music engineers who own a home theater system. The most noticeable difference in the stereo image is that the perceived image tends to be narrower when a Center speaker is used. Because most music mixes contain significant amounts of Center-channel information, we are used to hearing a phantom image produced by the Left and Right speakers. Since all of this information is now directed to a single point source, the Center speaker, we perceive it as being in the center. One way to correct this in the mix is to make the image slightly wider than normal for a two-channel stereo mix.

Can this plug-in be used for a tape based deliverable, such as the Sony SR format? Can I record an encoded LtRt mix to tape using this plug-in, or is it only for file-based deliverables?

SoundCode Stereo LtRt and SoundCode LtRt Tools work well for both tape-based and file-based deliveries. The TDM or RTAS type can be used to do a layback in real time to analog or digital video tape. The Audiosuite version can encode to a stereo file at 10-20x realtime. The file can be used as a deliverable and optionally can be laid back to tape at any time.

How do I install SoundCode Stereo which is bundled with the Avid Complete Production Toolkit?

The Toolkit installer is used to install SoundCode Stereo. On Windows, launch setup.exe located in the Complete Production Toolkit Installer. The installer lists a set of options to install. The last item listed is SoundCode Stereo. Make sure it is selected. And then click "Next" to install. After installation it can be found in c:\Program Files\Common Files\Digidesign\DAE\Plug-Ins.

I have SoundCode Stereo LtRT. Do I need to purchase the new Soundcode LtRt Tools for our new Pro Tools 10 machine but need to continue using the Soundcode Stereo LtRt for our other 8 and 9 systems?

SoundCode Stereo LtRt is a TDM and RTAS plug-in that operates on Pro Tools 10, 9, and 8. SoundCode LtRt Tools is AAX DSP and Native that only operates on Pro Tools 10 and it has a Pro Logic decoder plug-in. So, the answer depends on whether you are using a TDM, HDX, or Native system.

What is the Input Channel Order control for in the Audiosuite plug-in?

The Audiosuite plug-in has a control to select film or smpte ordered inputs from the timeline. It is simplest to highlight a 5.1 track and encode using film order. Pro Tools always uses film order for multichannel tracks. But some customers prefer to organize the 5.1 mix as six mono tracks ordered in SMPTE from top to bottom. In this case you can highlight all six tracks and set the control to SMPTE order.

Will SoundCode LtRt Tools work on my Pro Tools 9 system?

No. SoundCode LtRt Tools is an AAX plug-in and requires Pro Tools 10. If you have a TDM system and upgrade it to Pro Tools 10, then SoundCode LtRt Tools will operates as an AAX Native and Audiosuite plug-in.

Will SoundCode LtRt Tools work on my Pro Tools 10 TDM system?

Yes, but not as a TDM plug-in. It will operate as an AAX Native and Audiosuite plug-in. If you upgrade to AAX DSP later on, it will then operate as a DSP plug-in.

What is the difference between SoundCode Stereo and SoundCode Stereo LtRt?

SoundCode Stereo, which is bundled with the Avid Complete Production Toolkit, is for down mixing and monitoring in stereo on an LE system with a two-channel interface. It lets you open, monitor, and edit a surround session on a Mbox Micro system, for example. SoundCode Stereo LtRt has additional features necessary for for broadcast delivery workflows:
• Pro Logic I / II compatible encoding
• TDM and super-fast Audiosuite processing
• Brick wall limiting

I own the Avid Complete Production Toolkit. Can I upgrade from SoundCode Stereo to SoundCode LtRt Tools?

As it stands you have to purchase the full version of SoundCode LtRt Tools as there is no available upgrade path from the CPTK SoundCode Stereo.

The full version of SoundCode LtRt Tools can be purchased through our store HERE.

I am trying to encode/decode an LtRt file across 6 mono tracks in Pro Tools, but it is not working correctly.

Pro Tools 10 has changed its Audiosuite processing. In PT 9 and earlier you could select across 6 mono tracks and do a 5.1 downmix to stereo. Pro Tools 10 no longer will work that way. You must process the 5.1 audio in a 5.1 track. The region group feature can be used to select across multiple tracks and make a region that can be placed in a 5.1 track.

There is about half a frame of latency when using the AudioSuite Encoder.

This is a known bug that will be fixed. For now the workaround would be to manually drag the audio file back in slip mode after processing to line it up correctly.

I am trying to run multiple instances of the decoder but I get severe distortion.

At this time, only one native decoder can be used at a time. If you do have an HDX DSP system though, you can run multiple decoders.

I own SoundCode Stereo LtRt. Can I use it in Pro Tools 11?

Pro Tools 11 does not support RTAS/TDM plug-ins and SoundCode Stereo LtRt is not being ported to AAX.
However, SoundCode Stereo LtRt owners can upgrade to SoundCode LtRt Tools which is an AAX plug-in fully compatible with Pro Tools 10 and 11. SoundCode LtRt Tools adds a Dolby Pro Logic IIx decoder for a full LtRt encode/decode system.

How do I upgrade from SoundCode Stereo LtRt to SoundCode LtRt Tools?

Go to the Neyrinck Store and purchase the upgrade for $399. System requirements are an existing SoundCode Stereo LtRt license on an iLok. The new license will replace the existing license. SoundCode Stereo license owners need to first upgrade to SoundCode Stereo LtRt.

I own SoundCode Stereo which came with the Complete Production Toolkit. Can I use it in Pro Tools 11?

Avid stopped bundling SoundCode Stereo with the Complete Production Toolkit starting in Pro Tools 10, offering their own down mixing plug-in instead. Therefore, it is not being ported to AAX.

However, SoundCode Stereo owners can purchase SoundCode LtRt Tools which is an AAX plug-in fully compatible with Pro Tools 10 and 11.

The full version of SoundCode LtRt Tools can be purchased through our store HERE.

My ilok has been lost/stolen/broken and I need a replacement license.

If you have lost access to your ilok license for any of our SoundCode products, please submit an RMA through Once it has been verified and you have received an RMA number, please contact us with that number and we can deposit a brand new replacement license.

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