[en] Time-stretching method for changing the length of an audio signal without changing its perceived content, comprising the steps of: a) dividing an input audio signal into a set of grains, a grain being a group of consecutive audio samples from the input audio signal, the length of each grain of the set of grains being determined so as not to split a transient of the audio signal between two successive grains, b) inserting the grains in an output audio signal, the insertion being done at a rate corresponding to a speed factor, and c) synthesizing an audio texture to fill every gap between two successive grains in the output audio signal.
Disciplines :
Library & information sciences
Inventor :
Moinet, Alexis ; Université de Mons > Faculté Polytechnique > Information, Signal et Intelligence artificielle
Dutoit, Thierry ; Université de Mons > Faculté Polytechnique > Information, Signal et Intelligence artificielle
Latour, Philippe
Language :
English
Title (54) :
Time-stretching of an audio signal
Publication date (43-45) :
10 October 2012
Filing date (22) :
06 April 2012
Patent/publication number (10-11) :
WO2012136380A1
Priority number (30) :
11305407.6 EP 07.04.2011
International classification (IPC) (51) :
G10L21/04
European classification (ECLA) (52) :
G10L21/04
Applicant (71) :
EVS International (Swiss) SARL Université de Mons
Publication organism (19) :
WIPO - World Intellectual Property Organization
Research unit :
F105 - Information, Signal et Intelligence artificielle
Research institute :
R450 - Institut NUMEDIART pour les Technologies des Arts Numériques
