distributed video coding, robustness, multiple description coding, zero-padding ... Corresponding author (email: wah [email protected]). Supported in part by the ...
ac0,1, ac0,2, ac1,1, ac1,2. a) SDC at sender. b) LSP-based two-way MDC at sender. Figure 5: FS CELP under single description and the decomposition of an ...
analysis shows that adaptation in the network provides a better trade-off than .... The SVC extension of the MPEG4 codec is an example of an encoder.
where scalable data is multiplexed, our Priority Encoding Transmission system gives a near optimal solution MDS-based propose in [1] with a lower complexity ...
be dropped at random, and it is not clear how the source (or source-channel) ... make it to the decoder. When applied ... We approach the problem through the generalized mul- tiple description ... method for image coding, we consider the case of cod-
Jun 29, 2016 - Abstract: Multiple description (MD) coding is a promising alternative for the ... the contours and DPCM (Differential Pulse Code Modulation) to ...
pacity, large block sizes and complex encoding and decoding ... other hand, losing a few random bytes of a LempelâZiv com- ... in the source coding design.
ABSTRACT. This work presents a multiple description coding (MDC) scheme for compressed three dimensional (3D) meshes based on forward error correction ...
In this case, the encoded descriptions are reconstructed over noisy channels with packet ... is thoroughly investigated for randomly distributed correlated sources in presence of noise and PL considering both cases of transmission over binary symmetr
pression systems in order to 1) meet the users' requirements in terms of quality, ..... liable links (e.g., wired/wireless) via a unique coding stage fol- lowed by a ...
We present the pro- posed MD coding and transmission scheme in Section III ... ets that are transmitted separately, so that a lost pixel can still be approximated ...
to protect in a unequal manner the different semantic levels of a source, e.g. ... When all the traffic gets the same priority the quality transmission is only due to network .... fullfilled when the series of Ñ 2PSE dilations taken in the set Îл
Jan 14, 2000 - *This work is conducted in AT&T Labs-Research, where the first two authors ... and video sources), and it is reasonable to expect that a transform- ... only D0 for a given rate R is the standard source coder, which we will call.
LSP-BASED MULTIPLE-DESCRIPTION CODING FOR REAL-TIME LOW BIT-RATE. VOICE TRANSMISSIONS. Dong Lin and Benjamin W. Wah. Department of ...
PSNR gains of 5 dB or more are typical for packet loss probability as low as 5%. ..... nomenclature stems from the fact that, if (6) is true, one can read the samples ...
coding. Multiple Description Coding (MDC), as a candidate .... O O. = and so on. 4. SIMULATION RESULTS. In this section, we examine the performance of our.
The transmission of voice over IP networks is heavily affected by packet losses. An increasingly popular method to increase the error resilience of these systems ...
ABSTRACT. This paper compares several different approaches to robust speech recognition. We review CMU's ongoing research in the use of acoustical ...
Multiple-Microphone Robust Speech Recognition. Using Decoder-Based Channel Selection. Yasunari Obuchi. Advanced Research Laboratory. Hitachi Ltd.
code modulation (DPCM) system is used in each description,. i.e., each sample ... There are two differences between our modified DPCM and the conventional one. ...... techniques such as dithered quantization could be used. This will be a ...
Noisy channels causing transmission errors can ... actual bit rate and bit error rate are not of speci c inter- ... excitation signal equals the unquantized residual.
Aug 9, 2014 - Classical multiple description methods interpolate the missing data which results ... data loss, the lost data is estimated by interpolation over its.
Mar 1, 2002 - In this case, loss concealments need to be applied not only to a lost frame but to ... schemes for recovering lost data, when voice samples are ...