The binaural free field hearing threshold for pure tones from 125 Hz to 16 kHz

Torben Poulsen, Loc A Han

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    The binaural free field hearing threshold for pure tones has been measured for thirty-one otologically normal test subjects in the age range 18 to 25 years. The frequencies were 0.125, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 9, 10, 11.2, 12.5, 14 and 16 kHz. The signal duration was 1 s measured between the half amplitude points of the rise and fall course. The pure tone signals were generated from disk files. The thresholds were determined with the Bracketing Method (ISO 8253-1) using a step size of 5 dB. The results are in good agreement with ISO 389-7 and with other recent determinations of the free field hearing threshold. At 1500 Hz a small local peak in the threshold is seen which is not reflected in the present standards.PACS 43.66 Cb; 43.66 Pn
    Original languageEnglish
    JournalACUSTICA Acta-Acustica
    Pages (from-to)333-337
    Publication statusPublished - 2000

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