Speech-in-speech intelligibility depends on non-auditory factors beyond audibility alone

Evidence

In summary, increasing SL improved performance and increased SRM for all listeners. Furthermore, careful equalization of audibility across listeners reduced the effects of hearing loss on SRM. On the other hand, no manipulation was able to guarantee equal performance across listeners with various degrees of hearing loss. This suggests that while audibility is clearly an important factor, other factors may impact speech-in-speech intelligibility (e.g. aging, auditory filter width, or comorbidities associated with cognition, working memory and attention). — Dijk, Pim van, Physiology, Psychoacoustics and…, 1739

Categorization

Category: Causal Relationships

• XREF: Connects to the broader hearing-aid literature (audibility alone fails to restore speech understanding) and to cognitive-hearing-loss research (Hearing in Noise Test vs cognition).

Related

• Audibility alone cannot fully explain hearing-loss speech deficits; aging and cognition also contribute. (similarity 0.93)
• Audibility equalization reduces but cannot eliminate hearing-loss effects on speech-in-speech (similarity 0.93)
• Which cognitive ability predicts speech-in-noise intelligibility depends on the listening situation (similarity 0.87)
• Cognitive contributions to speech perception vary by listening situation (similarity 0.86)
• Both auditory and cognitive factors determine intelligibility in noise (similarity 0.86)
• Hearing sensitivity alone cannot explain speech-in-noise difficulties (similarity 0.86)
• Hearing aids rarely deliver meaningful speech-intelligibility benefits exceeding their detectability (similarity 0.86)
• Cognitive abilities affect speech-in-noise perception situation-specifically while hearing thresholds act uniformly (similarity 0.85)
• Reduced target audibility, not spatial processing loss, explains much of the hearing-loss speech deficit (similarity 0.85)
• Hearing aid SNR improvements fall below the just-noticeable threshold for speech understanding (similarity 0.85)
• A 1 dB SNR improvement boosts intelligibility by 7 to 19 percent (similarity 0.85)
• Hearing aids cannot deliver speech-in-noise gains that users can perceive or value (similarity 0.85)
• Every 1 dB of signal-to-noise improvement raises speech intelligibility by 7 to 19 percent (similarity 0.85)
• Priming from previously heard clear speech can boost intelligibility of degraded speech (similarity 0.85)
• A 1 dB SNR improvement raises speech intelligibility by 7 to 19 percent. (similarity 0.85)