My auditory threshold for speech is 15 dB SPL. My grandmother’s threshold requires triple the sound...
My auditory threshold for speech is 15 dB SPL. My grandmother’s threshold requires triple the sound pressure to detect speech. What is her threshold for speech (in dB SPL)? Group of answer choices
20-24 dB SPL
45-48 dB SPL
24-27 dB SPL
30-34 dB SPL
16-20 dB SPL
Homework Answers
The Sound pressure level (SPL) is given by,
in dB
Here p is the sound pressure
Now if the pressure is triple we have to replace p by 3p
So, the new SPL is,
So, the threshold of speech is 24-27 dB SPL
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