CHAPTER TWENTY-SEVEN
Technical specications
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Technical specications
Suppose, for example, that a stimulus level of 90dB is reported by the Otoport
during stimulus setup (rectangular stimulus). If this stimulus was replaced by the
reference stimulus, of the same amplitude, the level generated in a IEC 60711
ear simulator would be:
90dB + -6.1dB + 3.0dB = 86.9 dB SPL peak-to-peak equivalent.
(g) Polarity of stimulus:
The polarity of the stimulus varies between positive and negative, according to
the TEOAE test sequence.
(h) Repetition rate:
The stimulus is repeated every 12.5mS during standard Otoport TEOAE setup
and testing.
(i) Covered in (a) above
(j) Covered in (f) above
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