Preserving Audibility in Directional Microphones: Implications for Adults and Children
By Kuk, Francis, PhD; Keenan, Denise, MA; Lau, Chi, PhD; Hearing Review, Vol. 12, No. 12, pp. 62-66Publication Date: November 2005
Paper discusses the use of fixed directional microphones for adults and children. The authors contend that the use of a fixed directional microphone limits the amount of audible information and hearing intelligibility to the user. The limited audible information is especially noticeable at the lowest input level, and when the stimulus is presented at the null of the polar pattern. At a higher stimulus level, audibility limitations have been found to decrease. Even though the fixed directional microphone can limited the audibility of soft sounds, many people still consider them to be usable. The authors hypothesize that the usability of directional microphones should be similar for adults and children, though studies are necessary in order to confirm this.
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