Abstract
Practically all tests on the location of deafness are made by comparing the acuity of hearing as found by use of the tuning fork by air transmitted sound with that determined by applying the stem of the fork to the head bones. The disadvantages of the tuning fork test are both of a physical and physiological nature. No two forks are alike nor can the activation of any fork be expressed in terms of absolute or even reproducible units. It is also quite impossible to establish the threshold of audition either by the distance through which a fork is heard or in the case of bone transmission, by the length of time a given fork is heard when applied to the head. Scientific work on the problem of auditory acuity demands first of all that a standard method of measurement of acuity by air transmission be adopted. It is also essential that a new type of apparatus be devised which shall replace the tuning fork for the determination of minimum audibility for bone transmitted sound. Such an apparatus must fulfill seve...
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