On Wed, 2002-02-13 at 10:53, Swapnil Padhye wrote: > i want to strech a audio file. how can i do that???? > Is it possible to do so in java or any programming language??? if yes then what is >the exact procedure??
*g* I'd say this is possible in any programming language that provides you with the basic calculation operations. Helpful would be a array data type. So I suggest C, C++, Fortran, Pascal, Modula, Oberon, ... The basic idea for a simple time stretch is to subdivide your signal into overlapping windows. Next you would apply a so called windowing function to that window (Kaiser, Hamming, Hanning, a triangle). Afterwards you sum up those windows with an overlap that is a little bit bigger than the overlap you used before. So far the basic idea. Happy implementing :-) Cheers, Alex
