In conjunction with Dolby audio codecs, an older technology is sometime utilized called matrix encoding. This metadata is authored during the encode and used by consumer decoders to achieve optimal playback results for the device as well as listener preferences. The other feature and benefit of Dolby Codecs is that they carry metadata along with the compressed audio.
In addition to audio codecs for delivering to consumers, Dolby has a professional audio codec for use in professional contribution and post production – Dolby E. Dolby audio codecs provide near uncompressed audio quality at low datarates. Dolby codecs as a group are lossy/perceptual codecs, meaning that the codecs use patented psychoacoustic algorithms and processing to achieve bitrate reduction by removing redundant audio content that is imperceptible by the human ear. Dolby Codecsĭolby audio codecs provide substantial bitrate reductions, which allows for the delivery of audio by broadcast, streaming and fixed media at a fraction of the bandwidth and file size of uncompressed audio. Atmos is not an audio codec, but can be delivered by multiple codecs.
The Atmos system renders an Atmos mix appropriate to the listeners device and/or speaker configuration. Dolby Atmos uses audio objects to add an elevation to normal multi-channel audio. Dolby Atmosĭolby Atmos is a content creation, encoding, and delivery technology that provides immersive audio to consumers.
Dolby has created audio codecs and systems for the delivery of mono, stereo, 5.1, 7.1 and Immersive Audio to consumers for playback in mobile devices, game consoles, laptops and home theater. Dolby Audio enables the means to deliver high quality audio experiences to consumers.