A technical support community for Apple Logic Pro users.

Topic Author
Posts: 1
Joined: Sat Feb 02, 2019 4:31 pm

music note

Sat Feb 02, 2019 4:33 pm

I understand the meaning of music notations such as 3/4, 4/4 and so on. The first number is the number of beats per measure, while the second number is the note-duration (quarter, half, one-eighth) for each beat in the measure.

Does this mean that, a (hypothetical) music piece written as 3/4 with 4 measures in length can be expressed as 4/4 with 3 measures in length? Note that in both cases, there are 12 beats. It seems to me that by just changing the position of bars a 3/4 music can be expressed as 4/4 music, as long the original 3/4 music had 4 measures or any multiple of 4 measures (such as 8, 12, 16 and so on).

Is my understanding correct?
User avatar
Posts: 8283
Joined: Mon Dec 14, 2009 11:58 pm
Location: Montreal

Re: music note

Sun Feb 03, 2019 4:17 pm

Numerically speaking, the way you explain it, that is true.
But that does not take into account the rhythmical meaning of the global tempo signature.
Rhythmic accents will manifest in different places in 3/4 vs 4/4. The tempo signature reason being to highlight/determine same.
LogicX 10.4.8 ( & 9.1.8),MainStage3.4.3
MBPro 17", Core2Duo, 8G, OSX 10.12.6
MacPro, Xeon 6Cores, 64GB, OSX 10.13.6
ULN8, MOTU MIDI TP-AV, C4, Eucon McControl, KorgNano, Novation SLMkII
AAS, NI, Celemony, Spectrasonics, Korg, MIDIQuest, etc...
PC, iPad3(V-Control & LogicRemote), AtariST(Notator SL), Several vintage gear
Posts: 790
Joined: Thu Nov 05, 2015 3:42 pm
Location: Just south of Chattanooga, Tennessee, USA.

Re: music note

Mon Feb 25, 2019 4:06 pm

If you were to be presented with "a stream of musical 'beats,' 120 'beats' per minute," then you would be entirely correct (maybe) to conclude that each 'beat' is 'a quarter note.' Hence, you would know that the bottom-half of the time signature is ... "X / 4".

But, very soon thereafter, you will also notice that this "stream of 'beats'" seems to be naturally divided into measures, and that, within each measure, some of the "off" beats seem to be emphasized:
  • "One two three ... One two three ..." (3 / 4)
  • "One two (three) four." (4 / 4)
  • "One two three (four) five six." (6 / 4)

Each pulse "is a quarter-note," in all cases, but "the beat" varies.
- - - - -
Mike Robinson
"I wanna quit being a computer consultant and become a composer and arranger at age fifty-four."
Logic Pro X, MacBook Pro, 88-key MIDI controller.
Just south of Chattanooga, Tennessee, USA