Tolerance for Pure Tones and Speech in Normal and Hard-of-hearing Ears

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Page 5 - The impairment of understanding of speech is more closely related to the overall loudness loss at the intensity level at which the speech is heard than to the threshold audiogram or to the loudness loss in any special portion of the speech frequency range.
Page 70 - . . . by exposure to loud speech at a level just below the threshold of discomfort for several minutes a day at three or four weekly intervals.
Page 41 - ... increase of fundamental clinical and therapeutic audiological knowledge precludes any "static categorization." For example, study of the thresholds of tolerance for speech and for pure tones has suggested that there is a useful portion of the auditory area even beyond the range of classical audiometry. Some individuals who have heretofore been termed "totally deaf" as a result of audiometric tests may be reached by auditory stimulation using proper amplification. And it may prove to be more fruitful...
Page 52 - Ct/C0: thickness ratio d/b', and tj c) has opposite effects on group (1) and (2) on the one hand, and group (3) on the other.
Page 5 - It is, therefore, difficult to predict from a threshold of acuity measure how the impaired ear will function in an above-threshold acoustic environment.
Page 5 - If it could be demonstrated that the upper intensity limits or tolerance limits were higher than previously supposed, instruments could be designed with a higher level of maximum undistorted acoustic output and thereby the auditory range of usefulness could be increased materially. In Fig. 1 with its accompanying explanation we se...
Page 5 - It has been demonstrated, however, through the study of loudness well above threshold that the threshold audiogram alone is not an adequate measure of the impairment of auditory function.
Page 41 - This is important because the high level of tolerance thresholds reached experimentally suggests that there is an approachable and potentially useful portion of the auditory area beyond the range of present audiometry. Consequently, some individuals who have been termed "totally deaf" as a result of audiometric tests might be reached by auditory stimulation through properly designed apparatus.
Page 70 - The thresholds of discomfort, tickle, and pain rise systematically and significantly, with successive test sessions either daily or weekly, and approach limiting values after several test sessions.
Page 15 - UOJJBIJBA taneous peaks of pressure, such as occur in speech, at levels of at least 155 db instantaneous sound pressure (re: 0.0002 dynes/cm2) into the 6cc coupler.

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