Цитата из учебника:
[h] - constrictive noise fricative glottal voiceless consonant pronounced with a flat narrowing.
Articulation: The soft palate is raised; the air from the lungs causes audible friction as it passes through the open glottis, and resonates through the vocal tract with a quality determined chiefly by the position of the tongue taken up for the following vowel; voiceless, with some voicing when surrounded by vowels (aha)
Regional variants: Occurs only in syllable initial position, before a vowel; omitted in many regional accents; and widely considered the chief sign of "uneducated" British speech, usage variation in initial unaccented syllable (e.g. an hotel vs. a hotel)
И так все звуки. Возникает вопрос: на фиг нам всё это надо?!