Speech Understanding Flashcards
How smoothly conversation flows
conversational fluency
What tools are used to make predictions about speech understanding?
Pure-tone audiograms (speech banana or count-the dot audiograms)
WRS
What is WRS?
Word Recognition Score - an assessment tool that helps determine success with amplification and assists in counseling, training, etc.
Detection of overall speech and individual phonemes
Audibility
Discrimination and identification of phonemes and phoneme combinations
Intelligibility
Mild Hearing Loss
PTA=26-40 dB HL
Mild to Moderate Hearing Loss
PTA=41-55 dB HL
Moderate Hearing Loss
PTA=56-70 dB HL
Severe Hearing Loss
PTA=71-90 dB HL
Profound Hearing Loss
PTA=90 dB +
In quiet, speech recognition will be fairly unaffected. In noise, may decrease to 50% correct WRS.
Mild Hearing Loss
In quiet, face-to-face conversation and topic is known and vocabulary is constrained. If HA not used, may miss up to 50-75% of message
Mild to Moderate Hearing Loss
If patient does not use HA, may miss all or most of the message even if face-to-face. Great difficulty in noisy situations.
Moderate Hearing Loss
Patient may not hear voices unless speech is loud Without HA, patient will not recognize any speech in auditory only condition. With HA, may recognize some speech and detect environmental sounds.
Severe Hearing Loss
Patient may perceive sound as vibrations. Will rely on vision as the primary sense for speech recognition. May or may not be able to detect presence of even loud sounds without HA.
Profound Hearing Loss
The primary measurement when predicting the limitations caused by a hearing loss
Speech Recognition/Understanding (WRS)
Factors that influence undestanding for Hearing Impaired Listeners (7)
Hearing Loss Characteristics Etiology Age of Onset Age of Intervention Cochlear Processing Central Auditory Processing Other Factors
Speech Recognition testing should ideally show how the person _____________ in ______________situations.
Performs; Natural
3 types of Stimuli Presentation
Live Voice
Recorded Voice
Synthesized or Altered Speech
Testing response format where no choices are provided
Open Set
Testing response format where a fixed set of choices is provided
Closed Set
4 Confounding Variables in Speech Recognition Testing
Cognitive Skills
Language Skills
Reading Skills
Speech Skills
A test ________________ approach to speech recognition testing is most desirable.
Battery - it gives the best view of the individual’s speech recognition skills. Tests are conducted using different stimuli and conditions.
What is the frequency perception of a normal ear?
20 Hz-20,000 Hz
