Results 31 to 40 of about 62,964 (261)

Understanding user experience of mobile video: Framework, measurement, and optimization [PDF]

open access: yes, 2012
Since users have become the focus of product/service design in last decade, the term User eXperience (UX) has been frequently used in the field of Human-Computer-Interaction (HCI).
Docherty, Michael   +2 more
core   +2 more sources

Acoustic research for telecoms: bridging the heritage to the future

open access: yesActa Acustica, 2023
In its early age, telecommunication was focused on voice communications, and acoustics was at the heart of the work related to speech coding and transmission, automatic speech recognition or speech synthesis, aiming at offering better quality (Quality of
Nicol Rozenn, Monfort Jean-Yves
doaj   +1 more source

The Development of Digital Audio Coding

open access: yesTongxin xuebao, 1995
The psychoacoustic models used in perceptnal audio coding are described. The algorithm and realtime hardware implement complexity of MPEG/Audio,Dolby AC-2 ,and AC-3 are introduced.The result of the MPEG/Audio multichannel subject listening tests are ...
Guo Ke
doaj   +2 more sources

Perancangan dan Analisis Kinerja Pengkodean Audio Multichannel dengan Metode Closed Loop

open access: yesJurnal Nasional Teknik Elektro, 2014
The latest international standardized codec is MPEG Surround. But the open-loop system of the MPEG Surround not able to minimize errors. In this research, the design and performance analysis of the audio coding in MPEG Surround with closed-loop method ...
Muhammad Sobirin, Ikhwana Elfitri
doaj   +3 more sources

Advanced solutions for quality-oriented multimedia broadcasting [PDF]

open access: yes, 2008
Multimedia content is increasingly being delivered via different types of networks to viewers in a variety of locations and contexts using a variety of devices. The ubiquitous nature of multimedia services comes at a cost, however.
Etoh, M   +5 more
core   +1 more source

High capacity audio watermarking using FFT amplitude interpolation [PDF]

open access: yes, 2009
An audio watermarking technique in the frequency domain which takes advantage of interpolation is proposed. Interpolated FFT samples are used to generate imperceptible marks. The experimental results show that the suggested method has very high capacity (
Fallahpour Reza, Mehdi   +1 more
core   +2 more sources

Auditory Localization in Low-Bitrate Compressed Ambisonic Scenes

open access: yesApplied Sciences, 2019
The increasing popularity of Ambisonics as a spatial audio format for streaming services poses new challenges to existing audio coding techniques. Immersive audio delivered to mobile devices requires an efficient bitrate compression that does not affect ...
Tomasz Rudzki   +5 more
doaj   +1 more source

Perceptual bit allocation for low rate coding of narrowband audio [PDF]

open access: yes2000 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.00CH37100), 2002
In this work we consider adaptive bit allocation for perceptual coding of narrowband audio signals at low rates (down to 8 kbit/s). Two different strategies are used to shape the audible noise spectrum. In one approach, the quantization noise spectrum is shaped in parallel with the masking threshold curve.
Hossein Najaf-Zadeh, Peter Kabal
openaire   +1 more source

Autocorrelation Modulation-Based Audio Blind Watermarking Robust Against High Efficiency Advanced Audio Coding

open access: yesApplied Sciences, 2019
High Efficiency Advanced Audio Coding (HE-AAC) is a lossy compression method for digital audio data which supplies high-quality audio at a very low bit rate.
Yiyu Hong, Jongweon Kim
doaj   +1 more source

A simple lossy audio coding scheme based on the DWT [PDF]

open access: yes, 2007
This paper proposes a simple scheme for audio coding that does not use perceptual models. The audio coder is based on the discrete wavelet transform to decorrelate signals, computed through the lifting scheme, and followed by Huffman coding.
Khevariya, Prashant K.   +2 more
core  

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