DSL FP40 method - Frye Electronics

TABLE 4. The Desired Real Ear Maximum Sound Pressure Level (SPL) values (in dB*) as
a function of threshold (dB HL) and audiometric frequency for the DSL Method (row 2,
worksheet #2).
DSL Method Using FP40/FP40-D
Frequency
Threshold (dB HL) 250 500 750 1000 1500 2000 3000 4000 6000
0 94 102 101 99 99 100 100 99 97
5 94 102 101 99 99 101 100 99 97
10 94 102 101 100 99 101 101 100 97
15 95 102 101 100 100 102 102 100 98
20 96 103 102 101 101 104 103 102 99
25 97 104 103 102 102 105 104 103 100
30 98 105 104 103 104 106 106 104 101
35 99 106 106 105 105 108 108 106 102
40 101 108 107 107 107 110 110 108 104
45 103 109 109 108 109 112 112 110 106
50 105 111 111 110 111 114 114 112 108
55 107 113 112 112 113 116 116 114 110
60 109 115 114 114 115 118 118 116 112
65 112 117 116 116 117 120 120 118 114
70 115 119 119 118 119 122 122 120 116
75 118 121 121 120 121 124 124 122 119
80 121 123 123 123 123 126 126 124 121
85 124 125 125 124 125 128 128 126 123
90 127 127 127 126 127 129 130 128 125
95 130 129 129 128 129 131 132 130 126
100 134 131 131 130 131 133 133 132 128
105 — 133 132 131 132 134 135 133 -
110 — 135 134 133 133 135 136 135 -
*The values presented in this table assume a real ear unaided response (REUR) approximating
published average adult values (Shaw and Vaillencourt, 1985). Furthermore, if audiometric data
have been collected using 3A insert earphones (in dB HL), the above values assume an average
adult real-ear-to-coupler difference.
Acknowledgment
The protocols described herein were developed by Richard C. Seewald, Sheila T. Sinclair
and K. Shane Moodie, Child Amplification Laboratory, Hearing Health Care Research
Unit, The University of Western Ontario.
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