At SNR +6, normal hearing speech understanding percentage is?

At SNR +6, normal hearing speech understanding percentage is?

• A. 80%
• B. 95%
• C. 85%
• D. 90%

Answer: (D)

Understanding speech in noise depends on the signal-to-noise ratio: the higher the SNR, the clearer the speech sounds relative to the background. A +6 dB SNR means the speech is six decibels louder than the noise, which is a fairly favorable listening condition. For normal-hearing listeners, this level typically yields about 90% correct speech understanding. In quieter conditions, performance would be near 100%, while lower SNRs would reduce comprehension.

Understanding speech in noise depends on the signal-to-noise ratio: the higher the SNR, the clearer the speech sounds relative to the background. A +6 dB SNR means the speech is six decibels louder than the noise, which is a fairly favorable listening condition. For normal-hearing listeners, this level typically yields about 90% correct speech understanding. In quieter conditions, performance would be near 100%, while lower SNRs would reduce comprehension.