Physics A-Level
Reference tone
What Reference tone means in Physics A-Level, as defined for AQA.
Definition of Reference tone
Check what you remember
Read the wording for your board, then hide it and explain Reference tone in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
A tone at 1 kHz set to a chosen sound intensity level, such as 40 dB, against which a test tone is judged.
Topics that use Reference tone
- Sensitivity and frequency response (A-level only) (AQA A-Level)
Related terms
- Equal loudness curve
- Intensity
- Inverse-square relationship
- Logarithmic scale
- Loudness perception
- Relative intensity
- Decibel scale
- Perceived loudness
Using Reference tone in the exam
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