# Acoustic phi

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Phi taken as a musical ratio (ϕ*f where f=1/1) is about 833.1 cents. This metastable interval is sometimes called **acoustic phi**, or the phi neutral sixth.

As the ratios of successive terms of the Fibonacci sequence converge on phi, the just intonation intervals 3/2, 5/3, 8/5, 13/8, 21/13, ... converge on ~833.1 cents.

Acoustic phi is not to be confused with logarithmic phi, which is 741.6¢.

## Additional reading

- 833 Cent Golden Scale (Bohlen)
- Phi as a Generator
- sqrtphi, a temperament based on the square root of phi (~416.5 cents) as a generator