P100DP DPOAE Measurement System

P100DP DPOAE Measurement System

  • Ultra-low noise performance: Noise floor at 1 kHz: -17 dB SPL / √Hz.
  • Battery-powered preamplifier: Operates with 4× AA alkaline batteries.
  • Compact and portable design: Ideal for field and lab use (102 x 102 x 58 mm).
  • Status indicators: LEDs display normal and low-voltage conditions.
  • R30e DPOAE probe: A two-speaker probe with a high flexible cable of 2 m length.
  • Versatile output: Chinch output and input ports with optional adapters as required.

Application Notes

Software

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The EARLAB RESEARCH P100DP DPOAE Measurement System is a compact, ultra-low noise in-ear DPOAE probe paired with a battery-powered preamplifier. Designed for versatility, it seamlessly connects to consumer-grade audio interfaces or laboratory-grade data acquisition cards.

EARLAB RESEARCH P100DP DPOAE Measurement System.
Chinch input and output ports at the rear side of the P100DP DPOAE Measurement System.

The P100DP DPOAE Measurement System is shipped with the R30e In-ear DPOAE Probe with ear tips of various sizes for versatile use in advanced auditory research.

EARLAB RESEARCH R30e DPOAE Measurement Probe with ear tips.
EARLAB RESEARCH R30e DPOAE Measurement Probe with highly flexible cable and push-pull connector.

Characteristics

The typicla transfer function of the R30e microphone input connected to the P100DP DPOAE Measurement System is depicted below. The input sensitivity is typically -10 dB V ± 3 dB.

Typical microphone response of the EARLAB R30e in-ear DPOAE probe.
Typical microphone response of the R30e in-ear DPOAE probe connected to the P100DP DPOAE measurement system.

The following figure illustrates the typical output characteristics of the R30e DPOAE in-ear probe. Its high sensitivity enables optimal performance with low-voltage USB interfaces. The P100DP DPOAE Measurement System can be configured with optional active electrical attenuations to ensure compatibility with laboratory data acquisition systems, which often operate over a wider voltage range at lower resolution (e.g., ±10 V at 16 bit).

Typical speaker response of the EARLAB R30e in-ear DPOAE probe.
Typical speaker response of the R30e in-ear DPOAE probe connected to the P100DP DPOAE measurement system with the ear probe inserted into an ear simulator (IEC 60318-4 coupler).

The low noise floor of the EARLAB RESEARCH P100DP DPOAE Measurement System makes it suitable for recording of otoacoustic emissions with short averaging times. The figure below depicts the typical noise floor of the R30e in-ear DPOAE probe connected to the P100DP.

Typical noise floor of the EARLAB R30e in-ear DPOAE probe.
Typical noise floor of the R30e in-ear DPOAE probe connected to the P100DP DPOAE Measurement System.

Including

  • EARLAB RESEARCH P100DP DPOAE Measurement System (requires 4x AA alkaline batteries)
  • R30e In-ear DPOAE Measurement Probe
  • Set of ear tips of various sizes (from 7 to 13 mm diameter)
  • Connection accessories (depending on the device configuration; e.g., Chinch cables, Chinch-to-BNC adapters, Chinch-to-6.3mm jack cables)
  • Calibration data sheet and device manual

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