  A new impulse response (IR) dataset called "MeshRIR" is introduced. Currently
available datasets usually include IRs at an array of microphones from several
source positions under various room conditions, which are basically designed
for evaluating speech enhancement and distant speech recognition methods. On
the other hand, methods of estimating or controlling spatial sound fields have
been extensively investigated in recent years; however, the current IR datasets
are not applicable to validating and comparing these methods because of the low
spatial resolution of measurement points. MeshRIR consists of IRs measured at
positions obtained by finely discretizing a spatial region. Two subdatasets are
currently available: one consists of IRs in a three-dimensional cuboidal region
from a single source, and the other consists of IRs in a two-dimensional square
region from an array of 32 sources. Therefore, MeshRIR is suitable for
evaluating sound field analysis and synthesis methods. This dataset is freely
available at https://sh01k.github.io/MeshRIR/ with some codes of sample
applications.
