How should the initial masking intensity in the NTE be calculated?

The initial masking intensity in the non-test ear (NTE) is calculated by taking the air conduction threshold of the NTE and adding 10 dB. This method is grounded in the principles of masking, which is used to ensure that the sound presented to the test ear does not cross over and stimulate the NTE during threshold assessment.

When testing hearing, it's important to present a masking noise to the NTE to prevent it from responding to sounds intended for the test ear. The 10 dB addition is sufficient to ensure that any cross-hearing effects are minimized, as it provides a reliable starting point for masking without over-masking the NTE.

Using a higher initial masking level, such as adding 20 dB or more, could unnecessarily increase the intensity of the masking noise, which can lead to inaccurate results or increased patient discomfort. Therefore, the addition of 10 dB serves as an effective balance between achieving reliable masking while maintaining patient comfort and accurate results.