ON-THE-FLY TIMESCALE FOR COMPRESSED AUDIO STREAMS / AJUSTE ELÁSTICO EM TEMPO DE EXIBIÇÃO PARA FLUXOS DE ÁUDIO COMPRIMIDO
AUTOR(ES)
SUZANA MESQUITA DE BORBA MARANHAO
DATA DE PUBLICAÇÃO
2006
RESUMO
Timescale is a technique used to modify media-object playing duration. This work proposes timescale algorithms, to be performed on-the- fly, for compressed audio streams. The focus is situations where there is no user interference as, for example, the temporal consistency maintenance of a hypermedia document. The algorithms are proposed, developed and integrated to video timescale algorithms. Furthermore, a resynchronization algorithm is also proposed, and implemented, in order to maintain inter-media synchronization in MPEG-2 system streams. The timescale tool is composed by the aforementioned algorithms and their integration to content rendering tools. The proposed solution can be easily used in applications that need timescale compressed media streams. As an example, the adjustment tool was integrated to a hypermedia formatter. The proposed algorithms can adjust audio durations up to 10%, maintaining the audio perceptual quality within acceptable limits, as observed through quality measurements also described in this work.
ASSUNTO(S)
apresentacao hipermidia sistema system inter-media synchronization hypermedia formatter hyperprop formatter ajuste elastico sincronizacao intermidia formatadores hipermidia elastic time adjustment hypermedia presentation formatador hyperprop
ACESSO AO ARTIGO
Documentos Relacionados
- ALGORITMO DE AJUSTE ELÁSTICO PARA VÍDEO EM FLUXOS MPEG-2
- Speech perception analysis of the vowels of the Brazilian Portuguese in time-compressed.
- Modelos de trafego para fluxos gerados pelo protocolo UDP
- "Processamento distribuído de áudio em tempo real"
- SEGMENTAÇÃO DE VÍDEO NO DOMÍNIO COMPRIMIDO BASEADA NA HISTÓRIA DA COMPACTAÇÃO