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US6108626A - Object oriented audio coding - Google …
https://patents.google.com/patent/US6108626A/en
Audio sources are coded by recognizing different classes of audio such as speech and music. The classes are used to select between coding algorithms and to provide object definitions. Objects have abstract and concrete classes which may further rely on parameters produced by linear prediction and subband filters to provide a frame-based bit stream of information.
Audio object coding based on optimal parameter frequency ...
https://link.springer.com/article/10.1007/s11042-019-7409-7
Object-based audio coding directly operates on original audio object signals, so it is more potential to achieve high coding quality. The simplest coding scheme is encoding each object separately. Nikunen encoded the spectrogram of each audio object separately based on non-negative matrix factorization (NMF), and the phase information of audio objects was …
Audio object coding based on N-step residual …
https://link.springer.com/article/10.1007/s11042-020-10339-0
Spatial Audio Object Coding (SAOC) – The Upcoming …
https://www.iis.fraunhofer.de/content/dam/iis/de/doc/ame/conference/AES-124-Convention_SAOC-Upcoming-Standard_AES7377.pdf
Spatial Audio Object Coding (SAOC) is a parametric multiple object coding technique that overcomes these drawbacks. It is designed to transmit a number N of au-dio objects in an audio signal that comprises K down-mix channels, where K < N and K is typically one or two channels. Together with this backward compatible downmix signal, object meta data is transmitted through
AES E-Library » Object-Based Audio Coding Using Non ...
https://www.aes.org/e-lib/browse.cfm?elib=15380
VL -. Y1 - May 2010. AB - This paper proposes a new object-based audio coding algorithm, which uses non-negative matrix factorization (NMF) for the magnitude spectrogram representation and the phase information is coded separately. The magnitude model is obtained using a perceptually weighted NMF algorithm, which minimizes the noise-to-mask ratio (NMR) …
(PDF) Spatial Audio Object Coding With Two-Step Coding ...
https://www.academia.edu/11028997/Spatial_Audio_Object_Coding_With_Two_Step_Coding_Structure_for_Interactive_Audio_Service
Spatial Audio Object Coding With Two-Step Coding Structure for Interactive Audio Service. 1208 IEEE TRANSACTIONS ON MULTIMEDIA, VOL. 13, NO. 6, DECEMBER 2011 Spatial Audio Object Coding With Two-Step Coding Structure for Interactive Audio Service Kwangki Kim, Jeongil Seo, Seungkwon Beack, Kyeongok Kang, and Minsoo Hahn Abstract—An interactive audio service is …
(PDF) Spatial Audio Object Coding (SAOC) - The …
https://www.researchgate.net/publication/237067954_Spatial_Audio_Object_Coding_SAOC_-_The_Upcoming_MPEG_Standard_on_Parametric_Object_Based_Audio_Coding
Dengshi Li. The spatial audio object coding (SAOC) is an effective meth-od which compresses multiple audio objects and provides flexibility for personalized rendering in interactive services. It ...
Immersive Audio Delivery Using Joint Object Coding
https://www.aes.org/e-lib/download.cfm/18285.pdf?ID=18285
This paper presents joint object coding techniques that enable the delivery of object-based immersive audio content (e.g. Dolby Atmos) at low bit rates. This is achieved by conveying a multi-channel downmix of the immersive content using perceptual audio coding algorithms together with parametric side information that enables the
Advanced Audio Coding (MPEG-4) - loc.gov
https://www.loc.gov/preservation/digital/formats/fdd/fdd000114.shtml
AAC_MP4 is an object-based coding standard; decoders for AAC_MP2 may not be able to read AAC_MP4. The specification defines various object types and profiles; see Notes . Video-capable iPods and iPhones specify video files for which the audio appears to be audio- object -limited rather than profile-compliant; see AAC_MP4_LC .
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