語音明瞭度と周波数域の研究
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概要
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The author measured articulation scores for various bands of frequency range by various combination of high and low pass filters in 25 persons with normal hearing and the following conclusions were obtained.1) The more narrow the widthth og pass band, the more reducek the articulation. However, the, rate of reduction is unproportional to the width of pass band. i.e. articulation of words has anincreasing resitance for dividing the words sounds into narrower bands.2) A pass band of 1.5-0.25kc is most important for articulation of Japanese words and holds 30%ol articulation. This fact will be available to design of hearing aids.3) Reduced articulation due to interband masking by 0.25-0.15kc band for the other higher bands can be found in composing the diveded bands. 4) Articulatians for the remaining range by elimination of varions width of band are measured and show rklatively better scores than those of the corresponding pass bands. 5) The aconstic spectrums of varions words are mehsured through varigns pass bands and arefound comprementary in form as compared with the sensitivity curve of the ear.
- 社団法人 日本耳鼻咽喉科学会の論文