Very smart #linguistics folx, your attention please 🙏

Given the #IPA həˈləʊ, is there or is there not only "one way" of that being pronounced?
If so, by extension, correct in assuming the phoneme ə can again only be "pronounced" one way?

Why then does the ə on https://commons.wikimedia.org/wiki/General_phonetics#Vowels not sound like the ə in the word hello (represented as həˈləʊ)???

General phonetics - Wikimedia Commons

@theresnotime only a dabbler, but "hello" has two pronunciations common in English use: that one, and /hɛˈləʊ/ (which is what I assume yours is)
@hierarchon @theresnotime that's what I was thinking too. the schwa in the audio file is also a lot longer than would normally be used in an English word