D-0116684-B – 2020/03
OtoRead™ - Instructions for Use - US Page 70
The OtoRead
TM
uses a novel noise-rejection algorithm (patent pending) that permits accurate DPOAE
and TEOAE measurements in background noise and babble as high as 55 dB SPL to 65 dB SPL (A-
weighted). Briefly explained, use of available memory in the OtoRead
TM
processor permits a post-hoc
statistical analysis that identifies those samples whose retention would improve the overall accuracy.
Those samples are included in the final analysis; the noisier samples are rejected.
The artifact rejection can only reject the noisiest samples in a measurement period. If the ambient noise
level rises too high (and/or the ear tip seal is poor), then all samples will be noisy and accurate
measurements will be impossible. In such cases, the test result will indicate ’noisy’.
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