A Pro Tools plug-in suite for mastering-quality Dolby Digital AC-3 work: preview consumer home-theater sound, encode/decode AC-3, author metadata, and monitor dynamic range—all without dedicated Dolby hardware.
Purpose and Overview
SoundCode For Dolby Digital 2 is a software suite for Pro Tools that handles Dolby Digital AC-3 audio entirely within the familiar Pro Tools environment, eliminating the need for external Dolby hardware. It is designed for professionals mixing surround for television, DVD, or Blu-ray, offering encoding, decoding, and monitoring tools that integrate seamlessly into existing workflows.
The suite is particularly valuable for quality assurance, allowing engineers to hear exactly what consumers will experience from set-top boxes, streaming devices, or disc players. By providing real-time preview and analysis, it helps ensure that final mixes translate correctly across various playback systems, making it an essential tool for post-production and broadcast audio.
Key Capabilities: Preview, Encode, and Decode
The Dolby Digital Preview plug-in (AAX Native) sits on a 5.1 mix bus to simulate consumer decoding in real time. It includes AC-3 metadata authoring, adjustable decoding settings, and real-time DRC metering, showing exactly how dynamic range compression will affect the audio. This lets you make informed mix decisions before delivery.
The encoder is an AudioSuite plug-in with an ENCODE section for metadata and preprocessing (savable as presets) and an OUTPUT section for file writing (persistent per user). The decoder works both in real time (AAX Native 32/64-bit) and as an AudioSuite plug-in, offering stereo-to-mono, stereo-to-stereo, and stereo-to-5.1 configurations, though it is not available in multi-mono.
Workflows and Integration
Common workflows include mixing for home theater by placing Preview on the 5.1 bus, or mixing for DVD video and encoding to AC-3. For quality assurance, you can decode an AC-3 file synchronized with Pro Tools video playback, or monitor a DVD player’s bitstream via SPDIF or optical into a stereo aux track with the decoder.
The suite also supports delivering a bitstream via AES out by importing an AC-3 file into a stereo track and routing it to a digital output. For reference discs, you can encode a WAV file, burn an audio CD, and play it through a consumer decoder, or make a DVD ref disk with DVD authoring software.
Practical Applications and Limitations
These tools are practical for broadcast and post-production facilities that need to verify Dolby Digital deliverables. The Preview plug-in is essential for checking DRC and metadata in real time, while the encoder and decoder provide a complete chain for creating and verifying AC-3 files without dedicated hardware.
Note that the plug-ins are designed exclusively for Pro Tools, not other DAWs. The decoder lacks multi-mono support, and encoder output settings are global per user rather than per preset. These specifics influence session setup but do not detract from the suite’s utility in professional environments.
Key features
- Real-time Dolby Digital Preview plug-in (AAX Native) for 5.1 mix bus
- AC-3 metadata authoring and adjustable decoding settings
- Real-time DRC (Dynamic Range Control) metering
- Encoder as AudioSuite plug-in with metadata presets
- Decoder in real-time and AudioSuite versions, stereo to 5.1
- No external Dolby hardware required for encoding or decoding
- Integrated workflows for DVD, Blu-ray, and broadcast delivery
Best for
Post-production professionals mixing 5.1 audio for television, DVD, or Blu-ray who need to preview consumer home-theater sound, encode or decode AC-3 files, and verify DRC, all within Pro Tools without dedicated hardware. Ideal for quality assurance and reference disc creation.