object-based audio


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object-based audio

The audio encoding of a movie or concert that delivers optimum results depending on the listening device (headphones, computer, 5.1 home theater, 7.1 home theater, etc.). In traditional "channel-based" audio, music is recorded with a listening device in mind; for example, a 5.1 home theater with five speakers and one subwoofer. Object-based audio encodes audio sources as objects with meta-data that describes the microphone's placement in 3D space. Audio characteristics (dialog, musical instruments, explosion, etc.) are also identified.

Dolby Atmos and DTS:X Pioneered This Method
This method was introduced in Dolby Atmos and DTS:X encoding, which added ceiling-mounted speakers for more realistic surround effects. For example, a scream or gunshot can be perceived as if it were coming from high up on a hill. Although all those signals are combined when listening to stereo headphones, when each object is encoded separately in the soundtrack, that same movie can sound more realistic by adding more speakers to the home theater. See Dolby Atmos, DTS and home theater.
References in periodicals archive ?
ORPHEUS will deliver a sustainable solution, ensuring that workflows and components for object-based audio scale up to enable cost-effective commercial production, storage, re-purposing, play-out and distribution.
To further foster the development of new capabilities in the European content creation industry, ORPHEUS will publish a reference architecture and guidelines on how to implement object-based audio chains.
This fourth generation HiFi architecture enables emerging multi-channel object-based audio standards and offers 2X the performance versus the HiFi 3 DSP, making it ideal for DSP intensive applications including digital TV, set-top box (STB), Blu-ray Disc and automotive infotainment.
Dolby Atmos unleashes the full potential of sound by allowing filmmakers to easily place or move sounds anywhere in the movie theater with object-based audio to create a lifelike, virtual reality audio landscape.

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