Search for Zwicker’s specific loudness function.

1992 ◽  
Vol 91 (4) ◽  
pp. 2357-2357
Author(s):  
Rhona Hellman ◽  
Mary Florentine
Keyword(s):  
1965 ◽  
Vol 8 (3) ◽  
pp. 223-234 ◽  
Author(s):  
William Melnick

Five subjects with normal middle ear mechanisms, and otosclerotic patients, before and after stapedectomy, matched the loudness of their voices to the loudness of a 125-cps-sawtooth noise. The results showed loudness matching functions with gradual slopes, less than 1.00, for the normal subjects and the patients prior to stapedectomy. Post-surgically, the loudness function for the patients increased in steepness to considerably more than 1.00. These results are explained, most logically, in terms of increased sensitivity of the altered middle ear to sound energy generated by the listener’s own voice.


1965 ◽  
Vol 21 (1) ◽  
pp. 151-156 ◽  
Author(s):  
Jacob Beck ◽  
William A. Shaw

Experiments studied magnitude estimations of loudness as a function of the magnitude of the standard, the numerical value of the standard and the stimulus spacing. The results indicate that (a) the magnitude and numerical value of the standard may have marked effects on the judgment of loudnesses and (b) the distribution of the stimuli does not produce notable effects in the over-all form of the loudness function. Several possible sources of bias were investigated.


1984 ◽  
Vol 27 (1) ◽  
pp. 20-27 ◽  
Author(s):  
Daniel Geller ◽  
Robert H. Margolis

Three experiments were conducted to explore the utility of magnitude estimation of loudness for hearing aid selection. In Experiment 1 the loudness discomfort level (LDL), most comfortable loudness (MCL), and magnitude estimations (MEs) of loudness were obtained from normal-hearing subjects. MCLs fell within a range of loudnesses that was relatively low on the loudness function. The LDLs were lower than previously published values. Experiment 2 was performed to identify the source of disparity between our LDL data and previously reported results. The effects of instructions are demonstrated and discussed. In Experiment 3 magnitude estimations of loudness were used to determine the loudness of tonal stimuli selected to represent ⅓ octave band levels of speech. Over the 500–4000 Hz range, the contributions of the various frequency regions to the loudness of speech appears to be nearly constant. Methods are proposed for (a) predicting the frequency-gain response of a hearing aid that restores normal loudness for speech for the hearing-impaired listener and (b) psychophysically evaluating the compression characteristic of a hearing aid.


Author(s):  
Sheila Uliel

The suprathreshold acoustic reflex responses of forty two ears affected by sensorineural hearing loss of cochlear origin and fifty-eight ears demonstrating normal hearing, were recorded by means of an electro-acoustic impedance meter and attached X-Y recorder. The recordings were done in ascending and descending fashion,  at successively increasing and decreasing 5dB intensity levels from 90-120-90 dB HL respectively, for the individual pure-tone frequencies of 500, 1 000, 2 000 and 4 000 Hz. The contralateral mode of measurement was employed. Analysis of  these recordings indicated that the acoustic reflex  responses could be differentiated into five  characteristic patterns of  growth, which could be depicted upon a continuum of peaked, peaked-rounded, rounded, rounded-flat,  and flat  shapes. The peaked and peaked-rounded patterns were found  to predominate at all four pure-tone frequencies  in the normal ears, while the rounded-fiat  and flat  patterns were found  to predominate only at the higher pure-tone frequencies of 2 000 and 4 000 Hz in the ears affected  by sensorineural hearing loss. This latter relationship was also able to be applied to two disorders of  the loudness functio— loudness recruitment and hyperacusis. It was concluded that the flattened  acoustic reflex  patterns at the higher pure-tone frequencies  constituted a potential diagnostic cue related to the differential  diagnosis of sensorineural hearing loss, and to disorders of  the loudness function.


2014 ◽  
Vol 316 ◽  
pp. 16-27 ◽  
Author(s):  
Dirk Oetting ◽  
Thomas Brand ◽  
Stephan D. Ewert

1999 ◽  
Vol 105 (2) ◽  
pp. 1023-1023
Author(s):  
William Hellman ◽  
Rhona Hellman
Keyword(s):  

1963 ◽  
Vol 35 (6) ◽  
pp. 856-865 ◽  
Author(s):  
Rhona P. Hellman ◽  
J. Zwislocki
Keyword(s):  

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