The correct spelling of the word "dahka" is actually "Dhaka". The "h" sound in "Dhaka" is pronounced with a slight exhalation of air, as in "huh." This sound is represented in the International Phonetic Alphabet (IPA) as /h/. The "a" sound in "Dhaka" is pronounced as a short "uh" sound, which is represented in IPA as /ʌ/. Therefore, the correct IPA transcription of "Dhaka" is /ˈdækə/. It's important to use correct spelling and pronunciation, especially when communicating with others who are not familiar with the word.