The speech banana is an area of audiogram that covers.
1
the frequencies of all vowels, sounds, as well as the intensities within which they can be heard by person having normal hearing sensitivity.
2
the frequencies of all vowel and consonant sounds with the intensities within which can be heard by person having normal hearing.
3
the frequencies of all consonant sounds, as well as the intensities within which they can be heard by person having normal hearing sensitivity.
4
the frequencies of all vowel and consonant sound.