Voiceless glottal fricative

The voiceless glottal transition, commonly called the voiceless glottal fricative and sometimes called the aspirate, is a type of sound used in some spoken languages that patterns like a fricative or approximant consonant phonologically, but often lacks the usual phonetic characteristics of a consonant. The symbol in the International Phonetic Alphabet that represents this sound is $\langle\rangle$, and the equivalent X-SAMPA symbol is h.