Mathematics · Acoustics
One 'Phon' is defined as the sound pressure level in decibels (dB) produced by a pure reference tone at a frequency of:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 14000 Hz
- 22000 Hz
- 31000 Hz✓
- 4500 Hz
Correct answer
1000 Hz
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