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Pure-Tone Average and Speech-in-Noise - Audiology
https://www.audiology.org/pure-tone-average-and-speech-in-noise/
Fletcher (1929) originally proposed the average of the audiogram at 500–2000 Hz, as the best audiometric prediction of speech hearing. As suggested, the application of the 500, 1000, and 2000 Hz PTA appears to have best application to speech understanding in quiet; however, soon studies began to demonstrate that higher frequency hearing ...
How is the Fletcher average of pure tone averages ... - …
https://www.quora.com/How-is-the-Fletcher-average-of-pure-tone-averages-different-than-the-two-tone-average
The Fletcher Average is different. This is when someone has all three frequencies BUT there is a 20 dB difference between either 500 and 1000 Hz or 1000 and 2000 Hz making the results of the average not so specific.
Audiometric Tests and Diagnostic Workup
http://www.eargroup.net/wwwuploads/manuscripts/1364982090_publi060.pdf
PTA or Fletcher Index To summarize the audiometric findings several indices have been intro- duced,amongwhichthepuretoneaverage(PTA)or‘‘Fletcherindex’’ isthe most commonly used.
Audiology Telemedicine Evaluations: Potential Expanded ...
https://www.ncbi.nlm.nih.gov/pubmed/30832542
Audiology Telemedicine Evaluations: Potential Expanded Applications. Fletcher KT (1), Dicken FW (2), Adkins MM (1), Cline TA (1), McNulty BN (1), Shinn JB (1), Bush ML (1). Author information: (1)1 Department of Otolaryngology-Head and Neck Surgery, University of Kentucky Medical Center, Lexington, Kentucky, USA.
On the Definition of Hearing Handicap
https://www.asha.org/policy/RP1981-00022/
For instance, in the Fletcher method, or the Point-Eight rule, the range of hearing for the average of hearing thresholds at 500, 1000, and 2000 Hz was divided into degrees of hearing loss from 0 dB to 120 dB SPL (Fletcher, 1929).
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