UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

SUBMIT
Already a GlobalSpec user? Log in.

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

Customize Your GlobalSpec Experience

Finish!
Privacy Policy

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

- Trained on our vast library of engineering resources.

ISO 389-3

Acoustics - Reference zero for the calibration of audiometric equipment - Part 3: Reference equivalent threshold vibratory force levels for pure tones and bone vibrators

active, Most Current
Buy Now
Organization: ISO
Publication Date: 1 February 2016
Status: active
Page Count: 20
ICS Code (Noise with respect to human beings): 13.140
scope:

This part of ISO 389 specifies the following data applicable to the calibration of bone vibrators for puretone bone-conduction audiometry:

a) reference equivalent threshold vibratory force levels (RETVFL), corresponding to the threshold of hearing of young otologically normal persons by bone-conduction audiometry;

b) essential characteristics of the bone vibrator and the method of coupling to the test subject, and to the mechanical coupler;

c) essential characteristics of the masking noise and the baseline masking noise level applied to the ear not under test.

Guidance on the practical application of this part of ISO 389 in the calibration of audiometers is given in Annex B.

RETVFL is the vibratory force level transmitted to a mechanical coupler of specified characteristics by a vibrator when applied to the mechanical coupler under stated conditions of test and when energized at the voltage level corresponding to the normal threshold of hearing for location on the mastoid prominence.

NOTE 1 Values for the differences in reference equivalent threshold vibratory force levels between location on the forehead and mastoid are included for information in Annex C.

NOTE 2 Recommended procedures for carrying out bone-conduction audiometry are specified in ISO 8253‑1.

Document History

February 10, 2020
Acoustics — Reference zero for the calibration of audiometric equipment — Part 3: Reference equivalent threshold vibratory force levels for pure tones and bone vibrators AMENDMENT 1
A description is not available for this item.
ISO 389-3
February 1, 2016
Acoustics - Reference zero for the calibration of audiometric equipment - Part 3: Reference equivalent threshold vibratory force levels for pure tones and bone vibrators
This part of ISO 389 specifies the following data applicable to the calibration of bone vibrators for puretone bone-conduction audiometry: a) reference equivalent threshold vibratory force levels...
January 1, 1994
Acoustics - Reference Zero for the Calibration of Audiometric Equipment - Part 3: Reference Equivalent Threshold Force Levels for Pure Tones and Bone Vibrators
A description is not available for this item.

References

Advertisement