What type of noise is recommended for masking pure tones during testing?

Narrowband noise is recommended for masking pure tones during audiometric testing because it is specifically designed to cover a narrow frequency range, which is closely aligned with the frequencies of the pure tones being tested. This specificity allows narrowband noise to effectively elevate the threshold of hearing in the non-test ear without overwhelming or interfering with the test tone.

The use of narrowband noise helps ensure that the listener is purely responding to the tones rather than any ambient noise, which can improve the accuracy of hearing assessments. This type of masking noise is particularly advantageous in audiology because it closely mimics the frequencies of the tones being tested, providing a more effective masking solution compared to broader or less frequency-specific noise types like white noise or pink noise.

By using narrower frequencies, clinicians can more accurately determine hearing thresholds and diagnose potential hearing disorders while minimizing distractions that could arise from other types of noise.