In this section, a number of acoustic and psychoacoustic principles are applied to the clinical measurement of hearing ability. Hearing ability is described in Chapter 2 and summarized in Figure 2.10 ...

Audiometry is a non-invasive and painless procedure to measure hearing sensitivity of an individual. The hearing test is performed using sounds of single frequency, tested at various intensity levels ...

According to the latest national census, China has about 20 million people with hearing and speech disabilities. Along with pure tone audiometry, speech audiometry is the most common and important ...