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The tone decay test (also known as the threshold tone decay test or TTDT) is used in audiology to detect and measure auditory fatigue. It was developed by Raymond Carhart in 1957. In people with normal hearing, a tone whose intensity is only slightly above their absolute threshold of hearing can be heard continuously for 60 seconds.
Pure-tone audiometry is described as the gold standard for assessment of a hearing loss [15] but how accurate pure-tone audiometry is at classifying the hearing loss of an individual, in terms of hearing impairment and hearing disability is open to question. Hearing impairment is defined by the World Health Organization (WHO) as a hearing loss ...
Savitribai Phule Pune University (SPPU), formerly the University of Pune, is a public state university located in the city of Pune, India. It was established in 1949, and is spread over a 411 acres (1.66 km 2) campus in the neighbourhood of Ganeshkhind. [5] The university houses 46 academic departments.
The result of the test is an audiogram diagram which plots a person's hearing sensitivity at the tested frequencies. On an audiogram an "x" plot represents the softest threshold heard at each specific frequency in the left ear, and an "o" plot represents the softest threshold heard at each specific frequency in the right ear.
An audiogram is the result of a hearing test. The most common type of hearing test is pure tone audiometry (PTA). It charts the thresholds of hearing sensitivity at a selection of standard frequencies between 250 and 8000 Hz. There is also high frequency pure tone audiometry which tests frequencies from 8000 to 20,000 Hz.
Audiological exam. Audiology (from Latin audīre 'to hear'; and from Greek branch of learning -λογία, -logia) is a branch of science that studies hearing, balance, and related disorders. [1] [2] Audiologists treat those with hearing loss and proactively prevent related damage. [3]
A pure tone audiometry hearing test is the gold standard for evaluation of hearing loss or disability. [medical citation needed] Other types of hearing tests also generate graphs or tables of results that may be loosely called 'audiograms', but the term is universally used to refer to the result of a pure tone audiometry hearing test.
Lindos Electronics expanded the concept, retaining the FSK concept, and inventing segmented sequence testing, which separated each test into a 'segment' starting with an identifying character transmitted as 110-baud FSK so that these could be regarded as 'building blocks' for a complete test suited to a particular situation. Regardless of the ...