I have listened to a chanting of Homer's Iliad while silently reading the text (it was on a special website). It sounded to me a very authentic chanting and the website was a scientific one, so I presume there were no mistakes in the way the verses were read aloud. (I enjoyed it thoroughly it sounded like music.) I have found something that I do not understand. In the verses, nearly every 'η' was pronounced like 'ah' (long α). I have always thought it must be pronounced somewhere between long 'e' and 'i'.
Can anyone answer how is it then?