Term
| Purpose of Speech Audiometry |
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Definition
| Attempt to measure the ability to understand everyday conversational communication, aid to diagnosis, guide to rehab |
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Term
| Testing with Recorded Speech |
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Definition
| 1000hz calibration tone provided on recording, balance calibration tone on VU meter to 0, standardized |
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Term
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Definition
| Montiored live voice (MLV), controlled vocal effect, adjust microphone sensitivity to have the speech balanced at 0 on VU meter, more flexibility/control |
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Term
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Definition
| Compare to a physical reference |
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Term
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Definition
| compares an individuals sensitivity with that of the normal population |
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Term
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Definition
| compare to person's own threshold |
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Term
| Speech Recognition Threshold |
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Definition
| Lowest Level at which a speech signal is intelligible enough to be recognized or identified 50% of the time, should be within 6 of PTA for good reliability though up to 10dB is fair |
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Term
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Definition
A two syllable word pronounced with equal stress on both syllables, compound words, repeated for SRT
testing, carrier phrase optional |
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Term
| Speech Detection/Awareness Threshold (SDT/SAT) |
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Definition
| The hearing level at which a listener can just detect the presence of an ongoing speech signal 50% of the time, spondees or continuous discourse, done when you can't get a SRT |
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Term
| Most Comfortable Loudness (MCL) |
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Definition
| The hearing level designated by the listener as the most comfortable listening level for speech, usually between 40-55dB, CHL 30-40dB above average, SNHL not high above SRT because of recruitment |
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Term
| Uncomfortable Loudness Level (UCL) |
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Definition
| The sound pressure level (often in dbHL) at which speech becomes uncomfortably loud, continuous discourse, useful in hearing aid fitting |
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Term
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Definition
| Range of usable hearing, UCL-SRT=DR |
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Term
| Signal to Noise Ratio (SNR) |
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Definition
| The difference in decibels between a signal and a noise presented to the same ear, when speech is greater than noise=positive SNR, when noise is greater than speech=negative SNR |
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Term
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Definition
| A large increase in the perceived loudness of a signal produced by relatively small increases in intensity above threshold, SNHL |
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Term
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Definition
| The percentage of words that a patient can perceive and respond to correctly when presented at a given suprathreshold level |
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Term
| Phonetically Balanced Words (PB) |
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Definition
| Sounds occur with the same frequency as they do in a representative sample of English speech, monosyllabic |
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Term
| Redundancy vs HL Sensitivity |
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Definition
| The more redundant the less sensitive it is toward the hearing loss |
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Term
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Definition
| Closed set tests, nonsense-syllable tests, sentence tests, high frequency word lists |
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Term
| Performance Intensity Function (PI) |
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Definition
| A measure of how intelligibility of speech grows with an increase in the presentation level |
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Term
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Definition
| Maximum recognition score the client can obtain when speech is presented at a sufficiently loud level |
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Term
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Definition
| Aka articulation index or speech intelligibility index, a measure of the proportion of speech cues that are audible, expressed at proportion between 0 and 1 |
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Term
| Reasons for the PTA and SRT Not Coinciding |
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Definition
| Not understanding directions, equipment problems, intentionally claiming loss, psychological reasons |
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