Abstract

Interaural attenuation (IA) was evaluated for pure tones (frequency range 125 to 16000 Hz) using Sennheiser HDA 200 circumaural earphones and Telephonics TDH-39P earphones in nine unilaterally deaf subjects. Audiometry was conducted in 1-dB steps using the manual ascending technique in accordance with ISO 8253-1. For all subjects and for all tested frequencies, the lowest IA value for HDA 200 was 42 dB. The present IA values for TDH-39P earphones closely resemble previously reported data. The findings show that the HDA 200 earphones provide more IA than the TDH-39P, especially at lower frequencies (≤500 Hz). It is concluded that contralateral masking should be applied during pure-tone audiometry with the HDA 200 earphones when the level at the test ear is more than 40 dB above the threshold of the non-test ear.SumarioSe evaluó la atenuación interaural (AI) con tonos puros (rango de frecuencia 125-16000 Hz) usando auriculares circumaurales Sennheiser HAD 200 y auriculares Telephonics TDH-39P, en nueve sordos unilaterales. La audiometría se practicó en pasos de 1-dB usando la técnica manual ascendente de acuerdo con ISO 8253-1. En todos los sujetos y en todas las frecuencias el valor de AI más bajo para HDA 200 fue de 42 dB. Los valores actuales de AI para los auriculares TDH-39P se asemejan mucho a los datos previamente reportados. Los hallazgos muestran que los auriculares HDA 200 proporcionan mayor AI que los TDH-39P, especialmente en las frecuencias bajas (≤ 500Hz). Se concluye que el enmascaramiento contralateral debe aplicarse en la audiometría tonal con auriculares HDA 200, cuando el nivel en el oído evaluado sea mayor a 40 dB sobre el umbral del oído no evaluado.

Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.