If a sound is played with a frequency of 480 Hz, and a second sound is played with a frequency of 800 Hz, what is the name of the musical interval between the two sounds?

1 Answer
May 22, 2018

See below.

Explanation:

I don't think this has a scientific answer as such. Intervals in music do not follow a strict mathematical system concerning frequencies. As an example:

This is for concert pitch.

The note A3 has a frequency of 220Hz.

The note C#4 has a frequency of 277.18Hz

From A3 to C#4 is an interval of a Major third.

The change in frequency is:

#277.18-220=57.18#Hz

The note B3 has a frequency of 246.94Hz.

The note D#4 has a frequency of 311.13Hz

From B3 to D#4 is also an interval of a Major third.

The change in frequency is:

#311.13-246.94=64.19#Hz

As you can see the change in frequency is not consistent within an interval. So I don't believe it is possible to state an interval for the frequencies given in terms of music. These are not the frequencies of any notes at concert pitch either. One of the main reasons for the differences is that music uses equal temperament. This is a subject in its self.

The nearest I could relate the given pitches to is a Major 6th, but this is only an estimate.