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Visual reinforcement audiometry. Comparison of loudspeaker arrangements

Artikel i vetenskaplig tidskrift
Författare Lennart Magnusson
Eva Börjesson
Ann-Charlotte Axelsson
Publicerad i Scand Audiol
Volym 26
Nummer/häfte 4
Sidor 247-51
ISSN 0105-0397 (Print)
Publiceringsår 1997
Publicerad vid Institutionen för särskilda specialiteter, Avdelningen för audiologi
Sidor 247-51
Språk en
Länkar www.ncbi.nlm.nih.gov/entrez/query.f...
Ämnesord Adult, Audiometry/*methods, Auditory Perception, Female, *Hearing Aids, Humans, Middle Aged, *Reinforcement (Psychology), Sound Localization, *Visual Perception
Ämneskategorier Audiologi

Sammanfattning

Two different loudspeaker arrangements are currently used when performing Visual Reinforcement Audiometry (VRA). In the one arrangement, the loudspeakers are mounted on separate movable arms and positioned 15 cm from each ear. In the other, the loudspeakers are rigidly mounted close to their respective picture monitor at a distance of 50-70 cm from the child. In the present study, these two arrangements were compared by measuring real-ear sound pressure levels and actual sound field conditions. It was shown that a predominantly monaural stimulation was best achieved by using the 15-cm position, but also that the measurements were significantly more affected by small head movements when using this close position. When assessing the acoustics as well as practical aspects, it was concluded that loudspeakers mounted beside the picture monitors at a distance of 50-70 cm from the child makes a generally appropriate arrangement for VRA.

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