Improving the SNR by reducing noise helps speech more than raising the target.

Evidence

SRTs were not symmetrical as the SNR was varied up or down with the same amount. The benefit was greater when the filtered part of the noise decreased rather than when the filtered part of the target increased. This result questions the uniformly distributed importance over the [‑15; + 15] interval adopted by the SII and suggests that a greater importance should be attributed to positive SNRs compared to negative SNRs. — Dijk, Pim van, Physiology, Psychoacoustics and…, 3536 (#corroborates, via linked claim)

Categorization

• XREF: connects to: Improving speech intelligibility via noise reduction outweighs equivalent improvement of the target signal. — Dijk, Pim van, Physiology, Psychoacoustics and…, 3536; Speech intelligibility gains more from reducing masker energy than from increasing target energy; Listeners value a level change as much or more than an equal-dB SNR change

Related

• Improving speech intelligibility via noise reduction outweighs equivalent improvement of the target signal. (similarity 0.95)
• Speech intelligibility gains more from reducing masker energy than from increasing target energy (similarity 0.91)
• Speech intelligibility saturates beyond certain signal-to-noise ratio bounds. (similarity 0.89)
• A 1 dB SNR improvement raises speech intelligibility by 7 to 19 percent. (similarity 0.88)
• A 1 dB SNR improvement boosts intelligibility by 7 to 19 percent (similarity 0.88)
• Listeners value a level change as much or more than an equal-dB SNR change (similarity 0.87)
• Masker attenuation improves intelligibility more than equal target amplification (similarity 0.87)
• Filtering target or masker shifts SRTs until SNR effects asymptote (similarity 0.87)
• Every 1 dB of signal-to-noise improvement raises speech intelligibility by 7 to 19 percent (similarity 0.87)
• Removing low-frequency masker energy improves speech intelligibility by 0.65 dB per dB (similarity 0.87)
• Effective SNR range for speech extends far beyond SII standard bounds. (similarity 0.87)
• Equal SNR reductions hurt words and sentences alike in noise. (similarity 0.87)
• The just noticeable difference in signal-to-noise ratio for speech is about 3 dB (similarity 0.86)
• Removing low-frequency energy from a target beyond 15 dB no longer impairs speech reception (similarity 0.85)
• A 3-dB reduction in signal-to-noise ratio lowers intelligibility by 12% (similarity 0.85)

Broader Connections

• Improving speech intelligibility via noise reduction outweighs equivalent improvement of the target signal. #corroborates (1.00) — Dijk, Pim van, Physiology, Psychoacoustics and…, 3536
• Speech intelligibility gains more from reducing masker energy than from increasing target energy #corroborates (1.00)