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Table 2 F2 of sustained [a] vowel in TD and NLFC groups

From: Egyptian vowel second formant in isolation and in transition following high-frequency fricatives by NLFC hearing aid in children: how does the pattern compare to typically hearing peers?

TD

 

NLFC

Auditory

Visual

2167.17 Hz (± 351.17)

1st assessment

2096.13 Hz (± 525.66)

1741.13 Hz (± 383.43)

2nd assessment

1539.38 Hz (± 301.27)

1486 Hz (± 288.59)