Posts Tagged ‘octaves’

What Is An Octave? Understanding Pitch, Vibrations & Octaves (Watch video)

Thursday, January 1st, 2009

What is an octave? The word “octave” is related to “octopus”, “octagon”, etc — in other words, eight. In music, an octave is 8 diatonic scale notes  higher or lower than  the note of the same name.

For example, the “A” note is always 8 notes higher or lower than the previous “A”. The “A” above middle C vibrates 440 times per second, so the “A” an octave above it would vibrate 880 times per second, while the “A” below middle C would vibrate 220 times per second, and so on. 

The human ear identifies these octave notes as being “the same” — only higher or lower, so if a soprano sang A440 and a bass sang A110, the human ear would hear it as the same note — just separated by pitch. That’s why there are only 7 distinct diatonic pitches and only 12 distinct chromatic pitches, despite the fact that the piano keyboard has 88 keys. Each note is repeated over and over again, but at a higher or lower octave.

Piano Notes For Those Who Don’t Know Middle C From Tweedle Dee (video)

Saturday, October 11th, 2008

I am often guilty of assuming too much. Since I’ve been around music and the piano since I was old enough to walk, I tend to assume that everyone else knows the basics of piano notes and the piano keyboard. But it’s not necessarily so.

Some time ago I was talking about the piano, and a friend said to me “I don’t know Middle C from Tweedle Dee.” It slowly dawned on me that there are thousands of people who didn’t grow up with a piano in their homes, so how in the world could they know where various piano notes are located?

So here is Piano Notes 101: The piano keyboard is divided into white keys and black keys. The white keys start at the far left of the keyboard with a note called “A.” That is followed by B, C, D, E, F, and G, and then repeats over and over nearly 7 times until you reach the very top key on the keyboard which is a “C.”

The black keys are sharps and flats. Each black key has two names depending upon how it is used. If you move down from a white key, the black key next to it is called a flat. If you move up from a white key, the black key next to it is a sharp. (For you who know the piano, you will see that I am oversimplyfiing here so beginners won’t become confused.) There are 7 different white keys and 5 different black keys, making a total of 12 different keys which are then repeated in each octave up the keyboard until you reach the top “C.” There are 88 total keys on a standard piano keyboard. (Some electronic keyboards have fewer keys.)

Please watch this short 2-minute video IF you, like my friend, don’t know Middle C from Tweedle Dee.


Piano note names on the piano keyboard from chordman on Vimeo.