SoundAdvisor™ Audiometer Calibration System

The Larson Davis AUDcal is a robust and simple by design Class 1 audiometer calibration system developed to check the accuracy of hearing test equipment. It provides a clear and...

Key Product Features

Model: AudCal-831C

Meets BS EN IEC 60645-1:2017

Clear Pass/Fail

Audio Recording

Instant Reports

Narrowband Noise Level

Sound Booth Noise Levels

Speech Signals

Pulsed Signals

Audiometer Calibration

Production Testing

Hearing Aid Test

R & D

Intuitive Software

G4 LD Software leads you through each step with automatic detection of signals using four different standards including ANSI S3.6 (2010) and IEC 60645 (2017).

Mobile Connectivity

Setup, control, and run your test from a mobile device using the LD Atlas app available for both iOS and Android.

Automatic Corrections

Software corrects for reference equivalent threshold for sound pressure levels (RETSPL) for microphones and couplers as well as other response adjustments.

Real-time Adjustments

Perform level and frequency adjustments during audiometer tests. Reports are Easy – print, email, share, or store reports and certificates for your client or your archives.

Octave Filters

With real-time fractional octave filters, FM and pulse capabilities, plus powerful FFT and narrowband analysis and total harmonic distortion, 831C-AUD creates a fully functional audiometer measurement system.

Calibrate with Confidence

In the UK, the accuracy of an audiogram is only as reliable as the calibration of the equipment used. For audiologists, clinical scientists, and occupational health professionals, staying compliant with British Standards (BS) and BSA Recommended Procedures is not optional—it is a clinical necessity.

The Larson Davis AudCal System is a turnkey, portable solution designed to ensure your audiometric equipment meets every stringent UK requirement with "one-tap" efficiency.

Total Compliance

The AudCal system is built on the foundation of the SoundAdvisor™ Model 831C (a Class 1 Sound Level Meter), ensuring your clinic adheres to the following critical standards:

Acoustic Reference Levels (BS EN ISO 389)

Booth Qualification (BS EN ISO 8253-1)

Coupler Accuracy (BS EN IEC 60318)

Audiometer Performance (BS EN IEC 60645)

Built for Professionals

AUDcal is used by occupational health providers, audiologists, hospitals, and acoustic consultants worldwide. The intuitive software guides users step by step, automatically records results, and reduces the risk of error.

The system supports calibration in line with recognised British Standards, including BS EN ISO 389, BS EN 60645, and BS 7189, helping ensure audiometers remain accurate, compliant, and audit ready.