Effects of maturation on tympanometric wideband acoustic transfer functions in human infants
CA Sanford, MP Feeney - The Journal of the Acoustical Society of …, 2008 - pubs.aip.org
Wideband acoustic transfer function (ATF) measurements of energy reflectance (ER) and
admittance magnitude (∣ Y∣) were obtained at varying static ear-canal pressures in 4-, 12-
, and 27-week-old infants and young adults. Developmental changes in wideband ATF
measurements varied as a function of frequency. For frequencies from 0.25 to 0.75 kHz there
was as much as a 30% change in mean ER and∣ Y∣ with changes in static ear-canal
pressure between 4 and 24 weeks of age. From 0.75 to 2 kHz, the effects of pressure …
admittance magnitude (∣ Y∣) were obtained at varying static ear-canal pressures in 4-, 12-
, and 27-week-old infants and young adults. Developmental changes in wideband ATF
measurements varied as a function of frequency. For frequencies from 0.25 to 0.75 kHz there
was as much as a 30% change in mean ER and∣ Y∣ with changes in static ear-canal
pressure between 4 and 24 weeks of age. From 0.75 to 2 kHz, the effects of pressure …
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