Since you don’t want to know how to distinguish in music theory questions, I won’t talk about the theoretical distinction.

As for your question, first of all, you must be able to hear the intervals. If you can't even hear a few intervals, then it's impossible to distinguish major intervals from minor intervals. The only way to accurately hear the intervals is to listen more and practice more.

When you can accurately hear how many degrees the interval is, then you can first distinguish how many degrees the interval is, and then judge the size of the interval based on knowing the degree of the interval, and distinguish the size of the interval. The method with the minor is as follows:

Second interval: The major second and the minor second are both dissonant intervals, but the minor second is extremely harsh, while the major second is just a little harsh.

Third intervals: The major third and the minor third are both consonant intervals, but the major third sounds bright and the minor third sounds dim.

Sixth interval: Since the major sixth is obtained by transposing the minor third, the major sixth, like the minor third, is a dim consonant interval; because the minor sixth is obtained by the transposition of the major third , so the minor sixth, like the major third, is a bright consonant interval.

Seventh interval: Since the major seventh is the transposition of the minor second, the major seventh, like the minor second, is an extremely harsh dissonant interval; since the minor seventh is a major second Obtained by inversion, so the minor seventh is the same, only slightly harsh, dissonant interval as the major second.

In fact, if you listen carefully, you will also feel that when intervals such as the minor second and major seventh are listened to in isolation, there is a sense of entanglement and heart-wrenching (note that the premise is to listen in isolation) ), but when listening to the major second and minor seventh in isolation, there is only a sense of dissonance, but no sense of entanglement or strong heart-wrenching feeling.

For polyphonic intervals, please refer to the above single-note intervals to draw inferences. For example, the ninth degree is similar to the second degree, the tenth degree is similar to the third degree, the thirteenth degree is similar to the sixth degree, the fourteenth degree is similar to the seventh degree, and so on.

If you have any questions about anything, you can ask me directly.

:)

Music and Composition Technology (Team)-Sphalerite