SPEECH TEST STUDIED BY MEANS OF CONFUSION MATRIX
T. EBIHARA · Nippon Jibiinkoka Gakkai Kaiho · 1959
In order to obtain more exact results in speech test, the list of the words has to be reasonable from the stand point of confusion test among the speech words.However, confusion patterns among the speech words have not been derived upto date.Moreover, articulation scores for respective speech words could be obtained from the confusion matrix.Thus, the author could find a reasonable word lists for speech test.If the speech words are classified in the two groops, i.e.the direct sound and the contracted sound groop, the same confusion pattern can be found in the two groops.Therefore, the words list for speech test can be reasonably arrenged with only monosyllable sounds belonging to the direct sounds groop.The six words that is ni, de, be, pe, da and do must be omitted from the werds list because these words are very frequently confused with other words even in normal persons.The list contains 60 words.The total articulation score of this list for normal persons is calculated as 98% from canfusion matrix previonsaly obtained for direct sound groop.The list has been proved as more suitable in differentiation of nerve deafunss than any other lists in clinical use.