None

DateExpr FileTypeExpr LicenseExpr QueryExpr StringExpr UDoubleExpr UIntExpr

Not

DateExpr FileTypeExpr LicenseExpr QueryExpr StringExpr UDoubleExpr UIntExpr

name

CC CC0_1_0 CC_BY_3_0 CC_BY_NC_3_0 Sampling_Plus_1_0

nonEmpty

Filter

not

DateExpr FileTypeExpr LicenseExpr Factory StringExpr UDoubleExpr UIntExpr

numChannels

Filter Sound

numComments

Filter Sound

numDownloads

Filter Sound

numRatings

Filter Sound