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Dolby enhances the quality of lossless audio on Blu-ray with 96k upsampling

Dolby Laboratories has released the Dolby TrueHD coding solution to provide studios, authoring houses, and mastering facilities with the capability of enhancing the playback performance of lossless audio on Blu-ray Disc. TruHD enables facilities to integrate the benefits of 96 kHz playback quality audio into the final master while simultaneously reducing the incidence of digital artifacts introduced during the content-creation process.

Blu-ray Discs premastered using TrueHD with advanced 96k upsampling can now deliver "full-range high-definition surround sound experience ensuring optimum performance from today?s advanced A/V receivers and Blu-ray Disc players."

"The new Dolby TrueHD Lossless audio is a key distinguishing feature of Blu-ray content. All things being equal, you cannot improve on the quality of lossless audio coding; however, you can improve on the quality of the source PCM content prior to lossless encoding, and this is precisely what we have achieved with our advanced 96k upsampling technology," said Craig Eggers, Director, Content Creation and Playback, Home Theater Ecosystem, Dolby Laboratories.

"A significant amount of Hollywood content has been captured in native 48 kHz. Studios and authoring facilities that implement Dolby TrueHD with advanced 96k upsampling can elevate the quality of PCM audio prior to lossless Dolby TrueHD encoding, ensuring that consumers get the very best audio performance possible from their Blu-ray playback systems.?

Besides enabling optimum 96k upsampling, this technology features a unique apodizing filter that "masks" the unwanted digital artifacts known as ?preringing,? which is introduced during the content-capture and content-creation process. These digital artifacts can introduce an unnatural edginess or harshness to the audio. Dolby TrueHD with advanced 96k upsampling restores the natural tonality of the soundtrack.

The advanced 96k upsampling raises the bar for playback of movies, television, and concert films mastered for Blu-ray Disc. Beyond the Greater China release of The Flowers of War, Blu-ray Disc titles including the Joe Satriani concert film, Satchurated: Live in Montreal, and San Francisco Symphony at 100 have been premastered using Dolby TrueHD with advanced upsampling.

Story filed 18.05.12

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