• Dolby Multistream Decoder MS11 and MS12

    • The Dolby MS11 and MS12 Multistream Decoders provide TV, set-top box, and IC manufacturers with a single-package solution for decoding all premium audio content worldwide—broadcast, file-based, OTT/VoD services, and pay-TV operators.

    • Dolby MS11 and MS12 Benefits

      • Universal Decoding

        Decodes all audio formats required to match worldwide and specific local broadcast standards: Dolby® Digital Plus™, Dolby Digital, HE AAC, and all AAC bitstreams. The MS12 can also support Dolby AC-4.

      • Consistent Audio Delivery

        Supplies full Dolby metadata support for Dolby Digital Plus, Dolby Digital, and the Dolby implementation of HE AAC v2 audio formats.

      • Maximum Compatibility

        Generates standard Dolby Audio bitstreams, up to 5.1 channels (Dolby MS11) or up to 7.1 channels (Dolby MS12) from any incoming audio format. Creates standard two-channel downmix.

      • Audio Description Support

        Delivers audio description services in receiver-mix style, using two simultaneous decoders, so broadcasters can transmit a single mix.

      • Dolby Digital Plus Encoding (Dolby MS12)

        Transcodes the input signal to deliver a 7.1- or 5.1-channel Dolby Digital Plus bitstream over S/PDIF, HDMI®, or Wi-Fi connection, ensuring your customers get the sound that best matches their systems.

      • Advanced Postprocessing

        Provides volume leveling for all audio formats, across programs and channels with Dolby Volume (MS11) or end-to-end, metadata-based Intelligent Loudness (MS12). The Dolby MS12 adds bass enhancement, speaker tuning, virtual surround, and speech-gated dialogue enhancement.

      • Meeting the Challenge of Decoding Multiple Audio Formats

        As TVs and set-top boxes evolve into multipurpose digital media platforms, you face a manufacturing challenge. Content now comes from a variety of sources—and this results in a variety of audio codecs. Yet consumers expect a seamless experience whether they're watching traditional broadcast or streaming from the Internet and PCs, or content from USB keys, game consoles, or mobile devices.

        The Dolby Multistream Decoders, MS11 and MS12, deliver the right solution. Comprehensive and cost-effective, they reduce the complexity of integrating multiple audio technologies into your receivers.

        The Dolby MS11 and MS12 also provide a consistent volume level across programs and sources to make listening more enjoyable. Although Dolby metadata includes dialnorm parameters, many sources don't include it, so loudness levels may vary widely. The Dolby volume-leveling technology provides a solution that keeps your customers happy.

        With available support for Dolby AC-4, MS12 also paves the way for next-generation audio experiences, so you’ll be ready for future developments like ATSC 3.0 in the US.

        Another important MS12 feature is native support for advanced audio use cases from Netflix. Netflix partners can find more information in the the Netflix Ready Device Platform SDK.

        Extensive Postprocessing Capabilities

        By including full access to the decoded bitstreams, the Dolby MS11 opens up a whole range of postprocessing opportunities. It can apply volume leveling to a decoded 5.1 Dolby Digital Plus input stream and then reencode the stream to Dolby Digital for output to a home theater.

        The Dolby MS12 further expands postprocessing capabilities. Intelligent Loudness provides ITU-R relative and speech-gated loudness control and regulatory information for automated loudness management. For TV receivers, the Dolby MS12 can improve the sound of the small built-in TV speakers with enhanced bass response, speaker tuning for optimum performance, and virtual surround sound.

        Other new features of the Dolby MS12 include automatic pass-through of Dolby Digital Plus signals with the Dolby Atmos extensions and speech-gated Dialogue Enhancement so your customers hear every word.


        The Dolby MS11 and MS12 include licenses for the included Dolby technologies at a lower overall cost than separate licenses for existing Dolby Digital Plus, Dolby Digital and transcoder options.

        With their universal capabilities, the Dolby MS11 and MS12 also simplify product development and testing. Dolby supplies you with all the deliverables, testing, and technical support you need to make implementation easy.

      • Netflix C8

        Native Support

        Visit the Netflix partner tools website for Dolby audio requirements for the Netflix Ready Device Platform SDK.

      • Dolby Speech-Gating Reference Code

        Include Dolby technologies in your loudness measurement products at no cost.

      • Dolby MS11 Multistream Decoder Documentation

        Data Sheet