A 1 dB SNR improvement boosts intelligibility by 7 to 19 percent
Evidence
Recall that under difficult listening conditions, a 1 dB improvement in the SNR can result in an increase in intelligibility of between 7% and 19%. Due to the deficits associated with sensorineural hearing loss and the large potential benefits of a higher SNR, improving the SNR for listeners with hearing loss has been a focus of modern hearing aids. A variety of techniques are used to improve the SNR, with common ones being directional microphones and noise reduction algorithms. — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 1734
Categorization
- XREF: Carries forward signal-to-noise and masking concepts from earlier chapters on normal hearing. — connects to: Very high SNRs can reduce rather than improve word recognition accuracy; A meaningful speech-in-noise benefit requires at least 6 dB of SNR improvement; SNR must rise at least 3 dB before listeners tolerate one more conversation — Dijk, Pim van, Physiology, Psychoacoustics and…, 5697 (+2 more)
- corroborated: 2 independent passages support this claim — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 1734