Sibelmed SIBELSOUND DUO Manual De Uso página 84

SIBELSOUND
Table 1: Conversion of the estimated heating level into a percentage of monoaural hearing loss
DSHL, dB loss %
100 0.0
105 1.9
110 3.8
115 5.6
120 7.5
125 9.4
130 11.2
135 13.1
140 15.0
145 16.9
150 18.8
155 20.6
160 22.5
165 24.4
2. 'COUNCIL' DIAGNOSIS
The percentage of hearing loss is determined from the tonal audiogram, and according to the 2nd formula of the Council
of Physical Therapy. A percentage of hearing loss is applied to each ear at the 500, 1000, 2000 y 4000 Hz frequencies,
according to the corresponding threshold.
A. Monoaural Hearing Loss
• In Table 2, look for the correspondence between the hearing thresholds for each frequency and their % of hearing loss.
• Hearing Loss (%) = Sum of the hearing losses for all four frequencies.
• Average dB = (total thresholds) / 4.
A. Bilateral Hearing Loss
• Bilateral Loss (%) = (7 * (loss % in the best ear) + (loss % in the worst ear)) / 8.
520-800-MUM · Rev 1.01
DUO
· User's manual
DSHL, dB loss %
170 23.6
175 28.1
180 30.0
185 31.9
190 33.8
195 35.6
200 37.5
205 39.4
210 41.2
215 43.1
220 45.0
225 46.9
230 48.9
235 50.5
DSHL, dB loss %
240 52.5
245 54.5
250 56.2
255 58.1
260 60.0
265 61.9
270 63.8
275 65.6
280 67.5
285 69.3
290 71.2
295 73.1
300 75.0
305 76.9
EN 39
DSHL, dB loss %
310 78.8
315 80.6
320 82.5
325 84.4
330 86.2
335 88.1
340 90.0
345 90.9
350 93.8
355 95.6
360 97.5
365 99.4
368 100.0