[quote=Shi-Ku Chishiki]JKallears said in part…
First off… I’m not a Audi or BC-HIS, nor do I play one on T.V. That being said…
A HA does NOT improve and/or fix ones ability to hear and understand sounds within certain frequencies. It only increases the volume in the frequency range that you’re able to understand anyways.
As a example: if the natural unaided hearing in your ear has problems recognizing the f, s and th sounds (which are between 4,000 - 7,000 Hz), then NO amount of amplification is going to help you understand them. If you can’t hear or understand those letter sounds in that frequency range… then you CAN’T hear or understand them!
Here is an explanation of speech audiometry by asha
Speech audiometry includes determining speech reception threshold (SRT) and testing of word recognition . Speech reception threshold testing determines the faintest level at which a person can hear and correctly repeat easy-to-distinguish two-syllable (spondaic) words. Examples of spondaic words are “baseball”, “ice cream”, “hot dog”, “outside”, and “airplane.”. Spondaic words have equal stress on each syllable. The individual repeats words ( or points to pictures) as the audiologist’ s voice gets softer and softer. The faintest level, in decibels, at which 50% of the two-syllable words are correctly identified, is recorded as the Speech Reception Threshold (SRT). A separate SRT is determined for each ear.
Tests of word recognition attempt to evaluate how well a person can distinguish words at a comfortable loudness level. It relates to how clearly one can hear single-syllable (monosyllabic) words when speech is comfortably loud. Examples of words used in this test are “come”, “high”, “knees”, “chew.” In this test, the audiologist’ s voice (or a recording) stays at the same loudness level throughout. The individual being tested repeats words (or points to pictures). The percentage of words correctly repeated is recorded for each ear.
Thus, a score of 100% would indicate that every word was repeated correctly. A score of 0% would suggest no understanding.
Word recognition is typically measured in quiet. For specific purposes, word recognition may also be measured in the presence of recorded background noise that can also be delivered through the audiometer.)))))
I believe you are mixing up some info. Your word recognition scores are determined (with amplification) to a comfortable loudness level. If with this amplification in quiet you still cannot distinguish (then) you supposedly will not be able to distinguish at whatever level of amplification. I have read that the 2 basic symptoms of sensorineural loss that make it so that you cannot distinguish, that cannot be remedied by a hearing aid are, loss of frequency resolution, and loss of temporal/spectral resolution.
If you do not want to hear about FM and signal to noise ratios, skip to Basic audiology