Gsi audera

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CE-Chirp® is a new broadband stimulus available on the Audera.

The new CE-Chirp optimizes the stimulus so that the energy from the stimulus reaches all regions of the cochlea at approximately the same time. This change in the stimulus presentation offsets the mechanics of the cochlea’s traveling wave and results in an Auditory Evoked Potential (AEP) waveform that is significantly increased in amplitude. The AEP generated by a CE-Chirp has been demonstrated to be as much as two times more robust than

Software

the corresponding click ABR in normal hearing subjects.

CE-Chirp Octave Band is an additional stimulus that is available for frequency specific threshold estimation. Using the same principle as the CE-Chirp, the CE-Chirp Octave Bands elicit optimal waveforms for frequency specific evaluation.

Audera V2.7 Features ❯ CE-Chirp Stimulus ❯ CE-Chirp Octave Band Stimuli at 500 Hz, 1000 Hz, 2000 Hz, and 4000 Hz ❯ Calibration meets the current ISO 389-6 standard for short duration stimuli ❯ B71 Bone Vibrator ❯ Compatible with Windows 7™ (32 and 64 bit)

Click Response Timing

CE-Chirp Response Timing

SUM SUM (500Hz (500Hz - 8kHz) - 8kHz)

SUM SUM (500Hz (500Hz - 8kHz) - 8kHz)

500Hz 500Hz

500Hz 500Hz

1kHz1kHz

1kHz1kHz

2kHz2kHz

2kHz2kHz

4kHz4kHz

4kHz4kHz

8kHz8kHz

8kHz8kHz

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Setting The Clinical Standard

Audera™

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www.grason-stadler.com

Grason-Stadler, 7625 Golden Triangle Drive, Suite F, Eden Prairie MN 55344 800-700-2282 • 952-278-4402 • fax 952-278-4401 • e-mail info@grason-stadler.com

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Audera™ Software

Technical Specifications

Audiometric Standards: (for AEP/CAEP module) • IEC 60645-3 (2007) Audiometric Equipment – Test Signals of Short Duration • ISO 389-6 (2007) Reference Thresholds of Hearing for Test Signals of Short Duration • IEC 60645-7 (2009) Audiometric Equipment – Part 7: Instruments for the Measurement of Auditory Brainstem Responses – applicable sections only

Stimulus Specifications: (additions to AEP/CAEP module) • Click: 100 µS; frequency spectrum: 200 to 10,000 Hz • 2-1-2 Tone Bursts: 250, 500, 1000, 2000, 3000, 4000, 6000, 8000 Hz • CE-Chirp® (patent pending); frequency spectrum: 200 to 10,000 Hz (same as Click)

Transducers: Standard: TIP 50 insert phones Optional: TDH 39 headphones, B71 bone vibrator, 8 ohm loudspeakers meeting Audera hardware requirements Note: Calibration values are set to remain constant for all repetition rates based on a rate of 20 Hz and a duration of 1 second for the click train sequence; operator may deselect this default setting.

Computer Requirements: Operating System: Windows XP Professional (SP3), Windows Vista Business (SP2) and Windows 7 (32-bit and 64-bit versions) OS Languages: English, Chinese (simplified), French, German, Italian, Japanese, Korean, Portuguese, Spanish Minimum PC requirements:

• CE-Chirp Octave Bands: 500, 1000, 2000 and 4000 Hz

• CPU: 1.4 GHz

Note: All other stimuli are the same as originally provided per modality. See individual Technical Specifications for AEP/CAEP, ASSR and DPOAE modalities.

• RAM: 2 GB • Hard Drive: 20 MB for Audera program • CD R/W • USB Ports: 2

AEP/CAEP

ASSR

DPOAE

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CE-Chirp, CE-Chirp Octave Bands 500, 1000, 2000, 4000 Hz

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Short Duration Stimuli Calibration per ISO 389-6 RETSPLs

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Windows 7 (32-bit and 64-bit)

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B71 Bone Vibrator

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Setting The Clinical Standard

©GSI Grason-Stadler, 2011

REV. 2.7 FEATURES

P/N #2001-0320

• Screen Resolution: 1024 x 768 pixels Note: Need 1280 x 1024 for China