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Pubmed for Handhelds

PUBMED FOR HANDHELDS

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  • Title: [Measurements of directional hearing aid function].
    Author: Prosser S, Biasiolo R.
    Journal: Acta Otorhinolaryngol Ital; 1998 Apr; 18(2):70-3. PubMed ID: 9844215.
    Abstract:
    A digitally programmable hearing aid, equipped with a directional microphone system, has been tested on 5 subjects suffering from severe sensorineural hearing loss. The hearing aids were individually fitted and two gain response curves-respectively designed for omnidirectional (OD) and directional (D) listening-where chosen and tested. The functional gain, as measured from the speech perception threshold for sentences spoken in a quiet environment, was essentially the same for both settings. The D setting revealed its advantages when listening to a frontal speech source while the background noise of a "cocktail party" was delivered from behind the subjects. The D setting permits better tolerance of background noise with a hearing aid, as demonstrated by the signal-to-noise ratio which, at parity performance (50% correct responses), proved 2 to 5 dB lower than that obtained with the OD setting.
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