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. 1999 Jun;4(2):72-89.
doi: 10.1177/108471389900400207.

Selecting and Pre-setting Amplification for Children: Where Do We Begin?

D E Lewis  1
Affiliations

Selecting and Pre-setting Amplification for Children: Where Do We Begin?

D E Lewis. Trends Amplif. 1999 Jun.
No abstract available

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Figures

Figure 1.
Figure 1.
Representation of loudness categories for loudness discomfort level measurements. (From Kawell et al, 1988, Ear Hear. Used with Permission.)
Figure 2.
Figure 2.
Kiddie (top row) and adult (bottom row) sized tone hooks for BTE hearing instruments.
Figure 3.
Figure 3.
Unaided (panels A, C) and aided (panels B, D) audibility for average speech at one meter (panels A, B) and for the user's own voice (panels C, D). In all panels: Xs represent thresholds for the left ear (dB SPL in the ear canal), solid line represents the average level of speech, dashed lines represent the +15/–15 range of speech. In panels B and D, the asterisks represent maximum output of the hearing instrument.
Figure 4.
Figure 4.
Example of 2-cm3 coupler targets from FIG6 for low (45 dB SPL), moderate (65 dB SPL), and high (95 dB SPL) input levels for an individual with a mild to moderate hearing loss.
Figure 5.
Figure 5.
University of Western Ontario (UWO) speech spectrum. (From Seewald et al, 1993, DSL 3.1 User's Manual. Used with permission.)
Figure 6.
Figure 6.
Desired Sensation Level real-ear and 2-cm3 targets for a 10 month old infant with a moderate to severe hearing loss. On the graph, open squares represent threshold in dB SPL in the ear canal obtained using sound field measurements, pluses (+) represent targets for amplification of soft, average and loud speech, and triangles are predicted upper levels of comfort.
Figure 7.
Figure 7.
Desired Sensation Level real-ear and 2-cm3 targets for a 2 year, 10 month old child with a moderate to severe hearing loss. On the graph, symbols are as described in Figure 5 with the exception that thresholds were obtained using insert earphones.
Figure 8.
Figure 8.
Simulated 2-cm3 coupler targets for an Oticon Digifocus Compact (left) and an Oticon DigiLife Compact (right) hearing instrument based on hearing threshold information and manufacturer fitting algorithms.
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References

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