Frequency of E4
E4 has a frequency of approximately 329.63 Hz.
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E4 vibrates at approximately 329.63 Hz — the open high-E string of a guitar.
Frequently asked questions
- What frequency is middle C?
- Middle C (C4) is approximately 261.63 Hz in standard A4=440 tuning.
- What is A4 in Hz?
- A4 is 440 Hz by international standard (ISO 16:1975).