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Parametric binaural audio coding
2010 IEEE International Conference on Acoustics, Speech and Signal Processing, 2010A spatial audio scene consists of discrete audio sources and ambience. The 3D audio image is observed due to the directional sounds, but even more important is the reverberation and so called room effect caused by the properties of the space, the sources and listener location.
Pasi Ojala, Mikko Tammi, Miikka Vilermo
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Sixth International Conference on Parallel and Distributed Computing Applications and Technologies (PDCAT'05), 2005
AVS Audio Coding Standard is the first standard for Hi-Fi audio in China. The framework of AVS Audio was introduced. Many key technologies are described in details, including long/short window switch decision based on energy and unpredictability, integer MDCT for lossless time-frequency transform, square polar stereo coding, and context-dependent ...
null Hu Ruimin +3 more
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AVS Audio Coding Standard is the first standard for Hi-Fi audio in China. The framework of AVS Audio was introduced. Many key technologies are described in details, including long/short window switch decision based on energy and unpredictability, integer MDCT for lossless time-frequency transform, square polar stereo coding, and context-dependent ...
null Hu Ruimin +3 more
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2014
Abstract Audio Coding has proliferated as a mainstream enabling digital technology for all types of applications that provide audio and multimedia to consumers using transmission or storage channels with limited capacity. Since its infancies in the eighties and early nineties, the technology behind low bitrate audio coding has developed rapidly until
Jürgen Herre, Sascha Disch
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Abstract Audio Coding has proliferated as a mainstream enabling digital technology for all types of applications that provide audio and multimedia to consumers using transmission or storage channels with limited capacity. Since its infancies in the eighties and early nineties, the technology behind low bitrate audio coding has developed rapidly until
Jürgen Herre, Sascha Disch
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Flexcode - flexible audio coding
2010 IEEE International Conference on Acoustics, Speech and Signal Processing, 2010Modern networks are highly variable and, as a result, source coders are commonly used under conditions that they were not designed for. We address this problem with a source-coding philosophy that aims at the instantaneous re-optimization of a source coder to match a wide range of constraints on rate or quality and a wide range of packet-loss rates. We
Janusz Klejsa +2 more
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Quantization and psychoacoustic model in audio coding in advanced audio coding
SPIE Proceedings, 2011This paper presents complete optimized architecture of Advanced Audio Coder quantization with Huffman coding. After that psychoacoustic model theory is presented and few algorithms described: standard Two Loop Search, its modifications, Genetic, Just Noticeable Level Difference, Trellis-Based and its modification: Cascaded Trellis-Based Algorithm.
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The Journal of the Acoustical Society of America, 2013
A multi-channel audio encoder (10) for encoding a multi-channel audio signal (101), e.g. a 5.1 channel audio signal, into a spatial down-mix (102), e.g. a stereo signal, and associated parameters (104, 105). The encoder (10) comprises first and second units (110, 120).
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A multi-channel audio encoder (10) for encoding a multi-channel audio signal (101), e.g. a 5.1 channel audio signal, into a spatial down-mix (102), e.g. a stereo signal, and associated parameters (104, 105). The encoder (10) comprises first and second units (110, 120).
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Hardware Accelerating Audio Coding Algorithms
2006 Digest of Technical Papers International Conference on Consumer Electronics, 2006This paper evaluates hybrid hardware-software structures for acceleration and power savings in audio coding algorithms. Using the well known MPEG I/II layer 3 (mp3) decoder as example, we demonstrate the general principles and trade-offs. The results, obtained for mp3, are valid for (but not limited to) the full family of MPEG codecs, due to ...
F. Mayer, D. Dalquen, T. Dettbarn
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2015
Typical appearance models of speech and audio signals can be determined from physical models of the human vocal tract and of musical instruments, respectively. These are often expressed as filters excited by a source (source-filter model). The importance of periodic components is related to the harmonic properties of many audio sources; harmonic ...
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Typical appearance models of speech and audio signals can be determined from physical models of the human vocal tract and of musical instruments, respectively. These are often expressed as filters excited by a source (source-filter model). The importance of periodic components is related to the harmonic properties of many audio sources; harmonic ...
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IEEE Signal Processing Magazine, 1997
The Moving Pictures Expert Group (MPEG) within the International Organization of Standardization (ISO) has developed a series of audio-visual standards known as MFEG-1 and MPEG-2. These audio-coding standards are the first international standards in the field of high-quality digital audio compression.
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The Moving Pictures Expert Group (MPEG) within the International Organization of Standardization (ISO) has developed a series of audio-visual standards known as MFEG-1 and MPEG-2. These audio-coding standards are the first international standards in the field of high-quality digital audio compression.
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2010
This chapter presents DRA (Dynamic Resolution Adaptation) audio coding standard [97] as an example to illustrate how to integrate the technologies described in this book to create a practical audio coding algorithm. DRA algorithm has been approved by the Blu-ray Disc Association as part of its BD-ROM 2.3 specification [99] and by Chinese government as ...
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This chapter presents DRA (Dynamic Resolution Adaptation) audio coding standard [97] as an example to illustrate how to integrate the technologies described in this book to create a practical audio coding algorithm. DRA algorithm has been approved by the Blu-ray Disc Association as part of its BD-ROM 2.3 specification [99] and by Chinese government as ...
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