  This paper introduces OrchideaSOL, a free dataset of samples of extended
instrumental playing techniques, designed to be used as default dataset for the
Orchidea framework for target-based computer-aided orchestration. OrchideaSOL
is a reduced and modified subset of Studio On Line, or SOL for short, a dataset
developed at Ircam between 1996 and 1998. We motivate the reasons behind
OrchideaSOL and describe the differences between the original SOL and our
dataset. We will also show the work done in improving the dynamic ranges of
orchestral families and other aspects of the data.
