Professional LtRt encoding, decoding, and monitoring
SoundCode LtRt Tools brings full-quality Pro Logic encoding, an official Pro Logic IIx decoder licensed from Dolby Laboratories, and LtRt encode/decode monitoring into a single Pro Tools® plug-in suite.
Mac & Windows · AAX Native, DSP & AudioSuite · iLok
Three tools, one suite
Encode, decode without leaving the Pro Tools® session. Monitor what your audience will actually hear before you commit the master.
LtRt encoder
Pro Logic I and Pro Logic II matrix encoding from LCRS, 5.1, or 7.1 sources. Industry-standard quality, professional metering, brick-wall limiting on output.
Pro Logic IIx decoder
Licensed from Dolby Laboratories. Drop it on a stereo monitor path to hear exactly what a consumer Pro Logic decoder will produce.
LtRt Encoder/Decoder monitoring
Confidence check the encode/decoded mix against the source mix.
Edit and monitor anywhere
Runs as AAX DSP on Pro Tools HDX, AAX Native on Native rigs, and AudioSuite for render-in-place. No special hardware required to monitor.
Troubleshooting controls
Per-channel mute and phase inversion right on the encoder, so you can isolate a problem channel without re-routing the session.
Brick-wall limiting
Hard-ceiling protection on the encoded output. Hand off LtRt deliverables knowing they won't over.
- AAX Native
- AAX DSP
- AudioSuite
Inside the suite
Three plug-ins, each designed to do one job exceptionally well.
Encoder
LtRt matrix encoding for LCRS, 5.1, and 7.1 sources.
Decoder
Pro Logic IIx decoder, licensed from Dolby Laboratories.
Monitor
Round-trip encode/decode monitor for confirming the audience's experience.
Source formats
Encode straight from your surround stems. Decode straight back to stereo for review.
- LCRS
- 5.1
- 7.1
For professional LtRt delivery
Built for studios that have to hand off surround AND LtRt, and need to know both will sound right on the other end.
Television post
Deliver LtRt-encoded stereo for legacy broadcast paths alongside the 5.1 master. Confirm fold-down behavior before the QC pass.
Film post
Audition the consumer stereo experience from a theatrical mix without rendering a fresh stem. Catch surround content that disappears in the downmix early.
Game audio
Validate Pro Logic II compatibility for console deliveries that still rely on matrix encoding. Round-trip encode and decode in the same session.
How it fits in the session
Encode on the master bus
Insert the encoder on the surround master. Pick Pro Logic I or Pro Logic II matrix encoding, set the source layout, and the encoder produces a real LtRt stereo feed.
Decode for monitoring
Drop the Pro Logic IIx decoder on a stereo monitor return. Listen to what the consumer's home theater will produce — without leaving the session.
Print the deliverable
Use the AudioSuite version to render the encoded LtRt stereo to a new audio file. Brick-wall limiting on the output keeps it within spec.
Specs and features
Encoder
- Pro Logic I and II matrix encoding
- LCRS, 5.1, and 7.1 source layouts
- Per-channel mute and phase
- Brick-wall output limiter
- Pro Tools automation supported
Decoder
- Pro Logic IIx, licensed from Dolby Laboratories
- Decode LtRt stereo to 5.1 / 7.1 monitor returns
- Movie and music decoder modes
- Drop on any stereo monitor path
Downmix
- Stereo Lo/Ro fold-down
- A/B against the LtRt encode
- Configurable surround coefficients
System
- macOS — Apple Silicon & Intel
- Windows 10 and later
- AAX Native, AAX DSP, AudioSuite
- Pro Tools 10 and later
- iLok 2 or later · iLok Cloud supported
Built by Neyrinck
From the creators of PT Peek, V-Control Pro, V-90 Symphonic, and Spill — trusted tools used by audio professionals worldwide. The SoundCode suite has been in use in broadcast and post-production facilities since 2005.
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