Physics A-Level
Loudness perception
What Loudness perception means in Physics A-Level, as defined for AQA.
Definition of Loudness perception
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Reference: AQA
The way loudness is perceived, in which a sound must increase by roughly a factor of ten in intensity to be heard as about twice as loud.
Topics that use Loudness perception
- Sensitivity and frequency response (A-level only) (AQA A-Level)
Related terms
- Equal loudness curve
- Intensity
- Inverse-square relationship
- Logarithmic scale
- Relative intensity
- Decibel scale
- Perceived loudness
- Phon
Using Loudness perception in the exam
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