Of course this gives a number, but this number may be a surd, like √2.
For 'voiceless,' 'surd,' 'hard,' or 'tenuis' are sometimes used.
On the one hand Aristotle by his doctrine of matter admitted a surd into his system.
The rule of surd to surd and sonant to sonant is neglected in most of the factitious specimens of broken English.
The Sanskrit terms sonant and surd are, ...