Speech communication using the Voice over Internet Protocol (VoIP) is very common today.
The underlying network channel may be the public switched telephone network (PSTN …

The widely used code-excited linear prediction (CELP) paradigm relies on a strong
interframe dependency which renders CELP-based codecs vulnerable to packet loss. The …

In this paper, we present an improved quantization scheme for the redundancy data of a
forward error correction (FEC) technique proposed for the transmission of code-excited …

In this paper we present a new mitigation technique for lost speech frames transmitted over
loss-prone packet networks. It is based on an MMSE estimation from the last received frame …

One of the well-known problems of Code-Excited Linear Prediction (CELP)-type codec is its
vulnerability to a frame erasure. When a frame is erased, the inter-frame dependency …

This paper presents a recovery scheme for the error-propagation distortion which frequently
appears after a frame erasure in CELP-based speech coders, in particular the AMR codec …

This paper presents an ACELP-based speech transmission scheme that is robust to frame
erasures. The scheme is based on the steganographic transmission of media-specific FEC …

In this Ph. D. dissertation the influence of packet losses on speech recognition is analyzed
and different solutions to prevent, reduce and conceal their effects are developed. The …

In this paper, we propose an error mitigation scheme which combines two different
approaches, a replacement super vector technique which provides replacements to …

This paper presents a forward error correction (FEC) technique based on a multipulse
representation of the excitation for codeexcited linear prediction (CELP) speech …