Speech recognition of hearing-impaired listeners: predictions from audibility and the limited role of high-frequency amplification.

  title={Speech recognition of hearing-impaired listeners: predictions from audibility and the limited role of high-frequency amplification.},
  author={Teresa Y. C. Ching and Harvey Dillon and Denis Byrne},
  journal={The Journal of the Acoustical Society of America},
  volume={103 2},
Two experiments were conducted to examine the relationship between audibility and speech recognition for individuals with sensorineural hearing losses ranging from mild to profound degrees. Speech scores measured using filtered sentences were compared to predictions based on the Speech Intelligibility Index (SII). The SII greatly overpredicted performance at high sensation levels, and for many listeners, it underpredicted performance at low sensation levels. To improve predictive accuracy, the… 

Predicted and Measured Speech Recognition Performance in Noise with Linear Amplification

Speech intelligibility prediction based on the modified SII is a valid estimate of speech recognition performance of hearing-impaired persons with mild-to-moderate hearing loss and is more reliable than actually measuredspeech recognition performance, for comparing amplification conditions within subjects.

Providing low- and mid-frequency speech information to listeners with sensorineural hearing loss.

Error patterns suggested that the primary difficulty that hearing-impaired individuals have in using amplified speech is due to their poor ability to perceive the place of articulation of consonants, followed by a reduced able to perceive manner information.

Speech audibility for listeners with high-frequency hearing loss.

The present study adds further support to the idea that attempting to provide amplification to regions with severe high-frequency hearing loss may not necessarily benefit many individuals with hearing loss.

High-frequency audibility: benefits for hearing-impaired listeners.

There was a clear pattern in the results suggesting that as the degree of hearing loss at a given frequency increased beyond 55 dB HL, the efficacy of providing additional audibility to that frequency region was diminished, especially when this degree of Hearing loss was present at frequencies of 4000 Hz and above.

Modeling speech intelligibility in quiet and noise in listeners with normal and impaired hearing.

The present model is based on a loudness model for normally hearing and hearing-impaired listeners of Moore and Glasberg and predicts SIIs for three listener types with markedly less variability than the standard SII.

Prediction of speech recognition from audibility in older listeners with hearing loss: effects of age, amplification, and background noise.

The small reduction in scores for amplitude-modulated compared to steady noise and lack of age interaction suggests that the substantial deficit seen with age in multitalker babble for previous studies was due to some effect not elicited here, such as informational masking.

Benefits of amplification for speech recognition in background noise.

An analysis of error patterns showed that due to the limited speech audibility in a noise background, even severely impaired listeners used additional speech audible in the high frequencies to improve their perception of the "easier" features of speech including voicing.

The effects of hearing loss on the contribution of high- and low-frequency speech information to speech understanding.

The speech understanding of persons with "flat" hearing loss was compared to a normal-hearing control group to examine how hearing loss affects the contribution of speech information in various frequency regions, and measures of auditory thresholds in noise showed the "effective masking spectrum" of the noise was greater for the HI than the NH subjects.

Predicting the effect of hearing loss and audibility on amplified speech reception in a multi-talker listening scenario.

Hierarchical regression partialling out the effects of age found proficiency in noise-plus-jammers significantly correlated with results of "trail-making" tests, thought to index processing speed and attention-deployment ability, and proficiency in quiet and noise was found significantly correlation with results from a backward digit-span memory test.

Spectrotemporal modulation sensitivity as a predictor of speech intelligibility for hearing-impaired listeners.

Combining STM sensitivity estimates with audiometric threshold measures for individual HI listeners provided a more accurate prediction of speech intelligibility than audiometric measures alone, suggesting a significant likelihood of success for an STM-based model of speechelligibility for HI listeners.



Speech recognition and the Articulation Index for normal and hearing-impaired listeners.

The AI procedure as presently used is inadequate for predicting performance of individuals with reduced speech recognition ability and should be used conservatively in applications predicting optimal or acceptable frequency response characteristics for hearing-aid amplification systems.

Prediction of speech intelligibility for normal-hearing and cochlearly hearing-impaired listeners.

  • C. Ludvigsen
  • Physics
    The Journal of the Acoustical Society of America
  • 1987
It is concluded that speech intelligibility of cochlearly hearing-impaired listeners may also, to a first approximation, be predicted from articulation index theory.

Consonant reception in noise by listeners with mild and moderate sensorineural hearing impairment.

It is concluded that the primary source of difficulty in listening in noise for listeners with moderate or milder hearing impairments, aside from the noise itself, is the loss of audibility.

Use of the articulation index for assessing residual auditory function in listeners with sensorineural hearing impairment.

  • C. Pavlovic
  • Physics
    The Journal of the Acoustical Society of America
  • 1984
The results indicate that the deficit in suprathreshold speech processing is frequency-specific and that, therefore, the proficiency factor is not independent of frequency.

An articulation index based procedure for predicting the speech recognition performance of hearing-impaired individuals.

The articulation index calculation procedure developed for use with individual normal-hearing listeners was modified to account for the deterioration in suprathreshold speech processing produced by sensorineural hearing impairment.

Effects of frequency response characteristics on speech discrimination and perceived intelligibility and pleasantness of speech for hearing-impaired listeners.

  • D. Byrne
  • Physics
    The Journal of the Acoustical Society of America
  • 1986
The studies strongly support the frequency response selection rationale of amplifying all frequency bands of speech to MCL and highlight some of the complications involved in achieving this aim.

Stop-consonant recognition for normal-hearing listeners and listeners with high-frequency hearing loss. II: Articulation index predictions.

The results suggest that poorer speech recognition among hearing-impaired listeners results from reduced audibility within critical spectral regions of the speech stimuli.

Comparison of frequency selectivity and consonant recognition among hearing-impaired and masked normal-hearing listeners.

Although frequency selectivity is reduced, there is no consistent difference in consonant recognition between hearing-impaired subjects and masked normal-hearing subjects, when performance is assessed under conditions that assure equal speech-spectrum audibility across subjects.

Speech intelligibility in noise-induced hearing loss: effects of high-frequency compensation.

  • M. Skinner
  • Physics
    The Journal of the Acoustical Society of America
  • 1980
The speech-recognition ability of six listeners with permanent noise-induced hearing losses above 1 kHz was evaluated with the Pascoe High-Frequency Work List spoken by a female talker and presented

Recognition of nonsense syllables by hearing-impaired listeners and by noise-masked normal hearers.

The results indicated that two of the four hearing-impaired subjects performed better than their corresponding subgroup of noise- masked normal hearers, whereas the other two impaired listeners performed like the noise-masked normal listeners.