The first and second formants when you make an "ee" vowel sound are approximately \(270 \mathrm{~Hz}\) and \(2300 \mathrm{~Hz}\). The speed of \(\mathbb{N} T\) sound in your vocal tract is approximately \(350 \mathrm{~m} / \mathrm{s}\). If you breathe a mix of oxygen and helium (as deep-sea divers often do), the speed increases to \(750 \mathrm{~m} / \mathrm{s}\). With this mix of gases, what are the frequencies of the two formants?