I feel like there was something up with the editing this week?
I didnt really get to learn anything about David and didnt hear him speak much? Am I supposed to know who he is? He sounds like a nice guy of course, Im just confused.
Maybe I spaced out or got distracted when that was all explained....
So to add to my feeling of silliness, I googled consonant and dissonant music, but the explanations make zero sense to me.
Can someone explain it very simply? To someone who doesnt really listen to music or understand its written form...
Maybe an example of each might help?
I think it's best to think of it as complimentary and not complimentary, though I think in Tibetan throat singing it wouldn't really be dissonant in the same way as it is in Western music, so this is almost wholly subjective opinion. Consonance is generally considered pleasant and would result from complimentary vibrations in frequency. Since each note in the western scale moves at prescribed intervals, regardless of the "key," you get dissonance when you shift those vibrations. Like a guitar with a slightly detuned string, the frequency could be down shifted a few cents (100 cents per step) and it gives a very unpleasing sound. Some steps within a key though are more dissonant than others, so a second in relation to the root note is very dissonant because the frequencies are very close and not particularly complimentary, but as you move to the third, fourth and fifth notes in a key they get more harmonically sweet. Then the sixth again gets a little more dissonant, the seventh note is an inverted second in the key so it's more dissonant again, and then an octave is 2:1 and perfectly complimentary (so the frequency moves twice as fast as the root and sounds the "same")
I don't know if this is making sense to a non-musician, but suffice to say dissonance creates tension in music. The seventh step often leaves you gagging to have it resolved to the root, and likewise a tri-tone (the half step between the fourth and fifth which are sweet) is often used in heavy metal because it gives a dark and dissonant feel. Guitarists often bend strings slightly apart to create dissonance and tension and when bent back it offers the listener a sort of "relief." So don't think of dissonance as a bad thing, it's just not very pleasing to the western ear, but can be used to great effect because the resolution just feels
good. When you get into some Asian music they begin to use quarter tones, and you'll hear more dissonance used in a very cool way in Indian music with a Sitar, for instance.
ETA: I couldn't readily find an image, but think of a note on a frequency plot rising and falling. The lower the note the longer the wave and the higher the note the shorter the wave. When you have two frequencies very close together the rising and falling is very chaotic and they seem to fight each other. As the rising and falling becomes more complimentary and they fight less and sync up more frequently they sound more complimentary, until you get to an octave of a note and you literally get two rises and falls of the high note to one rise fall of the low note. A second octave would give you four rises and falls within one of the root note, and two inside the octave, and so on. Frequency plots are really an interesting visual expression of sound.