Balazs Kovesi

TL;DR: This paper describes the scalable coder - G.729.1 - which has been recently standardized by ITU-T for wideband telephony and voice over IP (VoIP) applications and which can operate at 12 different bit rates from 32 down to 8 kbit/s with wideband quality starting at 14 k bit/s.

TL;DR: In this paper, a method of concealing transmission error in a digital audio signal in which a signal that has been decoded after transmission is received, the samples decoded while the transmitted data is valid are stored, at least one short-term prediction operator and one long-term predictive operator are estimated as a function of stored valid samples, and any missing or erroneous samples in the decoder signal are generated using the operators estimated in this way, the method being characterized in that the energy of the synthesized signal as generated in this manner is controlled by means of a gain that

TL;DR: The paper presents a novel scalable audio coding scheme where the bitrates vary continuously between a minimal and a maximal value, allowing free modification of the bitrate.

TL;DR: The proposed stochastic K-means algorithm (SKA) associates a vector with a cluster according to a probability distribution, which depends on the distance between the vector and the cluster gravity centre, which is less dependent on the initial centre choice than the KMA.

TL;DR: In this paper, an impulsion dictionary comprises: for a given dimension, increasing resolution dictionaries imbricated into each other and a union of: a totality (D'iN) of code-vectors produced, by inserting elements taken in a final set (A) into smaller dimension code vectors according to the final set of predetermined insertion rules (F1).