[R] Limitations of audio processing in R

Ulisses.Camargo moliterno.camargo at gmail.com
Wed Sep 21 21:43:17 CEST 2011


Hello everybody

I am trying to process audio files in R and had some problems with files
size. I´m using R packages 'audio' and 'sound'. I´m trying a really simple
thing and it is working well with small sized .wav files. When I try to open
huge audio files I received this error message: "cannot allocate vector of
size 2.7 Gb". My job is open in R a 3-hour .wav file, make six 5-minute
random audio subsamples, and than save these new files. I have to do the
same process +1500 times. My problems is not in build the function to do the
job, but in oppening the 3-hour files. Does anybody knows how to handle big
audio files in R? Another package that allows me to do this work? I believe
this is a really simple thing, but I really don´t know what to do to solve
that memory problem.

Thank you very much for your answers,
all the best! 

Ulisses

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