About middle east pronunciations I know zilch, but Indonesian is my second language and in my normal day to day family and friends conversation I speak a mix of Indonesian/Javanese/English. 
 
Now, here's the thing:- jambiyas exist in Indonesia too, and in Jawa they call them "jambio", sometimes pronounced not as "jam-bi-o" but as "jambyo", the last three letters as in "Yo dude!" 
 
I do feel that variations in pronunciation of the vowels in these two words in the middle east would depend to a very great degree upon regional pronunciation. 
 
A. alnakkas:- if the "r" is pronounced, is it rolled?  That is "rrrr" ? Something like a Scotsman rolls his "r's".
		 
		
		
		
		
		
		
		
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