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DPOAE testing

Distortion-product otoacoustic emissions (DPOAEs) are generated in the cochlea in response to two tones of a given frequency and sound pressure level presented in the ear canal. DPOAEs are an objective indicator of normally functioning cochlea outer hair cells.

Our HearID and OtoStat systems employ computer-generated stimuli, automated data monitoring, and advanced signal processing for noise and artifact rejection. Data are collected rapidly and conveniently. Our DPOAE systems were developed using the same digital signal processing (DSP) and DPOAE measurement algorithms and the same hardware principles as the original CUBeDIS™ DPOAE Measurement System, developed at AT&T Bell Labs as a research tool. Through the dedication of engineers and scientists at Ariel, Etymōtic, universities, and research centers, it has developed into a widely-used clinical measurement system.

For use with newborns, infants, children, and adults.

DPOAEs on OtoStat

Screenshot of a MEPA and DPOAE test on the OtoStat
On the OtoStat, a wideband acoustic immittance measurement is used to assess the middle-ear and provide the DPOAE calibration (top). DPOAEs are then tested automatically (bottom) - shown is the 6-frequency test.
  • Frequency Range 1000-8000 Hz.
  • L1/L2 levels are 65/55 dB SPL.
  • Artifact rejection.
  • Stopping rules for early stop on pass and refer outcomes.
  • DP Definition Points: 2f1-f2.
  • Preset measurement protocols for the 4 frequency Boystown protocol and 6 and 12 frequency tests for convenient billing.
  • Normative data.
  • Export to Excel, Hi*Track, and OZ.

DPOAEs on HearID

Screenshot of a DPOAE test using HearID
HearID DP module screenshot showing an extended test in an adult ear with normal hearing and normal DPOAEs.
  • Frequency Range 500-16,000 Hz.
  • Level range 0-70 dB SPL.
  • Artifact rejection.
  • Stopping rules.
  • DP Definition Points: f2-f1; 2f2-f1; 2f1-f2; 3f1-2f2; 3f2-2f1; 4f1-3f2; 4f2-3f1.
  • Preset measurement protocols for the 4 and 6 frequency Boystown protocols and 6 and 12 frequency tests for convenient billing.
  • Customizable measurement protocols.
  • Normative data.
  • Boystown reporting format option.
  • Export to Hi*Track and OZ.