| as.dummies | Create matrix of dummy vectors from single factor |
| Bark | Convert between frequency in Hz and in Bark |
| bark2f | Convert between frequency in Hz and in Bark |
| bracket | Add rectangular bracket to plot |
| f2bark | Convert between frequency in Hz and in Bark |
| f2mel | Convert between frequency in Hz and in mel units |
| f2st | Convert between frequency in Hz and in semitones |
| is.inrange | Check whether argument is within range |
| mel | Convert between frequency in Hz and in mel units |
| mel2f | Convert between frequency in Hz and in mel units |
| semitone | Convert between frequency in Hz and in semitones |
| st2f | Convert between frequency in Hz and in semitones |
| talkers | Data set of talkers of Dutch from the Netherlands. |