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2003 Feb 02
1
Observations about the floating point data in vorbisfile
...king at the plot from -q10, the data from ov_read_float seems
clipped.
I've made some plots of encoding the start of Rammsteins Feuer from the
xXx soundtrack (it's a pretty loud soundtrack, but max is still max.. ).
http://www.ing.umu.se/~stric/tmp/vorbis/
These are plots of data read with ov_read_file, printf()'d and fed into
gnuplot. The x axis is sample number, counting from sample 900k
(left,right,left,right,...)
Looking at ov_read(), it clips the data to [-1..1], but I have encoded
files where samples go up to 1.45 which I suppose isn't right.
Both 1.0 and 1.0rc3 show similar stuff...