CODEURS AUDIO, DÉCODEURS AUDIO, SYSTÈMES, PROCÉDÉS ET PROGRAMMES INFORMATIQUES UTILISANT UNE RÉSOLUTION TEMPORELLE AMÉLIORÉE DANS LA PROXIMITÉ TEMPORELLE DE DÉBUTS OU DE DÉCALAGES DE PHONÈMES FRICATIFS OU AFFRIQUÉS

摘要

An audio encoder for providing an encoded audio information on the basis of an input audio information comprises a bandwidth extension information provider configured to provide bandwidth extension information using a variable temporal resolution and a detector configured to detect an onset of a fricative or affricate. The audio encoder is configured to adjust a temporal resolution used by the bandwidth extension information provider such that bandwidth extension information is provided with an increased temporal resolution at least for a predetermined period of time before a time at which an onset of a fricative or affricate is detected and for a predetermined period of time following the time at which the onset of the fricative or affricate is detected. Alternatively or in addition, the bandwidth extension information is provided with an increased temporal resolution in response to a detection of an offset of a fricative or affricate. Audio encoders and methods use a corresponding concept.