Progress in LPC-based frequency-domain audio coding
نویسندگان
چکیده
منابع مشابه
Progress in LPC-based frequency-domain audio coding
This is an Open Access article, distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives licence (http://creativecommons.org/ licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is unaltered and is properly cited. The written permission of Cambridge University Press must be obta...
متن کاملEfficient cross-fade windows for transitions between LPC-based and non-LPC based audio coding
The reference model selected by MPEG for the forthcoming unified speech and audio codec (USAC) switches between a non-LPC based coding mode (based on AAC) operating in the transform domain and an LPC-based coding mode (derived from AMR-WB+) operating either in the time domain (ACELP) or in the frequency domain (wLPT). Seamlessly switching between these different coding modes required the design...
متن کاملWide-Band Audio Coding Based on Frequency-Domain Linear Prediction
In this paper, we re-visit an original concept of speech coding in which the signal is separated into the carrier modulated by the signal envelope. A recently developed technique, called frequency domain linear prediction (FDLP), is applied for the efficient estimation of the envelope. The processing in the temporal domain allows for a straightforward emulation of the forward temporal masking. ...
متن کاملGaussian mixture model based audio coding in a perceptual domain
Gaussian mixture model based vector quantization (GMM-VQ) is a powerful technique for structured vector quantization. This thesis describes the implementation and evaluation of a perceptual audio coder using GMM-VQ. It is combined with a perceptual transform using psychoacoustic preand post-filtering. The coder was tested for low rate mono audio coding (64 kbps) and the results were compared to...
متن کاملNon-uniform QMF Decomposition for Wide-band Audio Coding based on Frequency Domain Linear Prediction
This paper presents a new technique for perfect reconstruction non-uniform QMF decomposition developed to increase efficiency of a generic wide-band audio coding system based on Frequency Domain Linear Prediction (FDLP). The base line FDLP codec, operating at high bit-rates (∼136 kbps), exploits an uniform QMF decomposition into 64 sub-bands followed by sub-band processing based on FDLP. Here, ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: APSIPA Transactions on Signal and Information Processing
سال: 2016
ISSN: 2048-7703
DOI: 10.1017/atsip.2016.11