MS11 Multistream Decoder

MS11 Multistream Decoder

The Dolby® MS11 Multistream Decoder can decode all premium broadcast audio formats for TVs and set-top boxes, including Dolby Digital PlusDolby Digital, HE AAC, and all AAC bitstreams. MS11 also features Dolby Volume, the premier solution for maintaining consistent volume levels across programs and sources.

MS11: Versatile and Powerful

Televisions and set-top boxes are rapidly evolving into multipurpose digital media platforms for the home. In addition to traditional broadcast and operator sources, content can arrive from the Internet, USB keys, PCs, game consoles, and mobile devices. These use an array of audio codecs, which poses a challenge for consumer equipment and chip manufacturers.

Providing a comprehensive and cost-effective solution, the Dolby MS11 Multistream Decoder:

Decodes all the audio formats required to match worldwide and specific local broadcast standards (Dolby Digital Plus, Dolby Digital, HE AAC, and all AAC bitstreams)

Supplies full Dolby metadata support for Dolby Digital Plus and Dolby Digital formats to ensure consistent audio delivery

Allows pass-through of the main audio directly for output over HDMI® interfaces.

Simultaneously, the Dolby MS11 always creates a decoded two-channel downmix from any of the multichannel inputs. This ensures that consumers who listen in stereo or mono receive a signal that matches their home systems. For maximum compatibility, the decoder also generates a standard Dolby Digital bitstream output (up to 5.1 channels) from any incoming audio format.



Dolby Digital

Decode and Encode

Dolby Digital decode



Dolby Digital Plus decode



HE AAC decode



Dolby Digital encode for any audio source



Volume Leveling

Volume leveling for all audio formats



Volume leveling for 5.1 output




Receiver mix Audio Description



5.1 surround mixing for Audio Description



Enables system sounds on 5.1 output




MS11 Postprocessing Capabilities

The Dolby MS11 enables a whole range of postprocessing capabilities by including full access to the decoded bitstreams. One key application is the ability to apply Dolby Volume to a decoded 5.1 Dolby Digital Plus input stream and then reencode the stream to Dolby Digital for output to a home theater.

Other postprocessing capabilities that can be applied include virtual surround sound processors and custom equalization of the audio. Lastly, the Dolby MS11 provides explicit testing and support for file playback of ASF and MP4 containers.

MS11 Single-Package Solution

The Dolby MS11 provides IC and consumer broadcast product manufacturers with a universal decoder that reduces the complexity and cost of integrating multiple audio technologies in new receivers. It also simplifies product development and testing.

Other benefits include the following:

The dual technology package results in a lower overall cost than separate licenses for existing Dolby Digital Plus, Dolby Digital, and transcoder options.

Support for audio description services delivered receiver-mix style, using two simultaneous decoders, means that broadcasters can transmit a single mix.

Automatic creation of a simultaneous stereo downmix eliminates the need for broadcasters to create a separate stereo signal.

Dolby metadata support ensures consistent audio delivery from content creation to the consumer device.

MS11 Multistream Decoder

The Dolby MS11 Multistream Decoder provides a cost-effective solution for decoding all premium audio formats.

Choose from the drop-down menus below to get Dolby professional reference material.