A. Screening test involves the use of a device that produces a series of tones for eg, using some audible instrument or a tuning Fork with frequency, the traditional and conventional method of testing for the hearing ability. If the patient does not hear a certain number of tones, depending on the standard used by the office, he or she fails the test. At that point, the patient may be scheduled for further tests or referred to another source (e.g., an audiologist) to determine the exact nature of the problem.
B. That test is a diagnostic Test and it is called measurement of auditory threshold . (air tone – here means air conduction; [ you know there are two types of hearing modalities-1)Air conduction . 2) Bone conduction)] Threshold is in fact defined as the faintest tone a subject is able to hear via air conduction. THIS METHOD OF MEASUREMENT IS CALLED “Pure tone audiometry (PTA)” : Behavioural measurement of hearing threshold, as it relies on patient response to pure tone stimuli. PTA only measures thresholds. In simple words,
pure tone audiometry is used to measure the auditory threshold of an individual. The instrument used in the measurement of auditory threshold is known as the audiometer (using a headphone type)
I hope it explains a little bit more.
Thank you for tuning in!
