The big heads of the meeting could not comprehend how Tenaliraman was confident that he could solve this so easily!. 
ðʌ bɪɡ hɛdz ʌv ðʌ mitɪŋ kʊd nɑt kɑmpɹihɛnd haʊ  wɑz kɑnfʌdʌnt ðæt hi kʊd sɑlv ðɪs soʊ izʌli!. 
 Indian speaks in a monotone voice with a clear and close-sounding delivery in a quiet environment.