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Interval Calculator Ear

Reviewed by Calculator Editorial Team

An interval calculator ear helps musicians and music enthusiasts determine the frequency and type of musical intervals between two notes. Whether you're composing music, studying harmony, or just exploring the science of sound, understanding ear intervals is essential.

What is Interval Calculator Ear?

The interval calculator ear is a tool designed to calculate and identify musical intervals based on their frequency ratios. It helps users understand the relationship between two notes in terms of their pitch and harmonic content.

Musical intervals are the distances between two notes in terms of frequency. They can be classified as perfect, major, minor, augmented, or diminished. The interval calculator ear provides a quick and accurate way to determine these relationships.

How to Use Interval Calculator Ear

Using the interval calculator ear is straightforward. Follow these steps:

  1. Enter the frequency of the first note in Hertz (Hz).
  2. Enter the frequency of the second note in Hertz (Hz).
  3. Click the "Calculate" button to determine the interval.
  4. Review the result, which includes the interval name, ratio, and cents.

Note

For best results, ensure the frequencies are accurate and within the human hearing range (20Hz to 20,000Hz).

Common Ear Intervals

Here are some common musical intervals and their frequency ratios:

Interval Ratio Cents
Unison 1:1 0
Minor Second 15:16 100
Major Second 8:9 200
Minor Third 5:6 300
Major Third 4:5 400
Perfect Fourth 3:4 500
Perfect Fifth 2:3 700
Minor Sixth 5:8 800
Major Sixth 3:5 900
Minor Seventh 5:9 1000
Major Seventh 8:15 1100
Octave 1:2 1200

How Interval Calculator Ear Works

The interval calculator ear uses the following formula to determine the interval between two notes:

Formula

Interval Ratio = Frequency of Note 2 / Frequency of Note 1

Cents = 1200 * log2(Interval Ratio)

The calculator then compares the calculated ratio and cents to a database of known musical intervals to identify the closest match.

For example, if you input 440Hz for the first note and 660Hz for the second note, the calculator will determine that this is a perfect fifth interval.

FAQ

What is the difference between a major and minor interval?
Major intervals are larger than minor intervals. For example, a major second is larger than a minor second, and a major third is larger than a minor third.
Can the interval calculator ear be used for non-musical sounds?
Yes, the interval calculator ear can be used for any sounds within the human hearing range. It's not limited to musical notes.
What is the smallest interval that can be measured with the interval calculator ear?
The smallest interval that can be accurately measured is determined by the precision of the frequency inputs. For practical purposes, intervals smaller than a minor second may not be meaningful.