Theres all these:
Simple time signatures:
4/1 = 4 semibreves in a bar (16 crotchets) = quadruple time
3/1 = 3 semibreves in a bar (12 crotchets) = triple time
2/1 = 2 semibreves in a bar (8 crotchets) = double time
4/2 = 4 minims in a bar (8 crotchets) = quadruple time
3/2 = 3 minims in a bar (6 crotchets) = triple time
2/2 = 2 minims in a bar (4 crotchets) = double time
4/4 = 4 crotchets in a bar (4 crotchets) = quadruple time
3/4 = 3 crotchets in a bar (3 crotchets) = triple time
2/4 = 2 crotchets in a bar (2 crotchets) = double time
4/8 = 4 quavers in a bar (2 crotchets) = quadruple time
3/8 = 3 quavers in a bar (1.5 crotchets) = triple time
2/8 = 2 quavers in a bar (1 crotchet) = double time
4/16 = 4 semiquavers in a bar (1 crotchet) = quadruple time
3/16 = 3 semiquavers in a bar (0.75 crotchets) = triple time
2/16 = 2 semiquavers in a bar (0.5 crotchets) = double time
4/32 = 4 demisemiquavers in a bar (0.5 crotchets) = quadruple time
3/32 = 3 demisemiquavers in a bar (0.375 crotchets or 3/8 of a crotchet) = triple time
2/32 = 2 demisemiquavers in a bar (0.25 crotchets) = double time
Compound Time signatures:
12/1 = 4 dotted breves in a bar (48 crotchets) = quadruple time
9/1 = 3 dotted breves in a bar (36 crotchets) = triple time
6/1 = 2 dotted breves in a bar (24 crotchets) = double time
12/2 = 4 dotted semibreves in a bar (24 crotchets) = quadruple time
9/2 = 3 dotted semibreves in a bar (18 crotchets) = triple time
6/2 = 2 dotted semibreves in bar (12 crotchets) = double time
12/4 = 4 dotted minims in a bar (12 crotchets) = quadruple time
9/4 = 3 dotted minims in a bar (9 crotchets) = triple time
6/4 = 2 dotted minims in a bar (6 crotchets) = double time
12/8 = 4 dotted crotchets in a bar (6 crotchets) = quadruple time
9/8 = 3 dotted crochets in a bar (4.5 crotchets) = triple time
6/8 = 2 dotted crochets in a bar (3 crotchets) = double time
12/16 = 4 dotted quavers in a bar (3 crotchets) = quadruple time
9/16 = 3 dotted quavers in a bar (2.25 crotchets) = triple time
6/16 = 2 dotted quavers in a bar (1.5 crotchets) = double time
12/32 = 4 dotted semiquavers in a bar (1.5 crotchets) = quadruple time
9/32 = 3 dotted semiquavers in a bar (1.125 crotchets or 1 and 1/8 of a crotchet) = triple time
6/32 = 2 dotted semiquavers in a bar (0.75 crotchets) = double time
But remember that these are not all the time signatures ever invented. There are also irregular time signatures.
Crotchets are also known as quarter notes. In simple time signatures, a quarter note gets one beat. In compound time signatures, the unit beat is a dotted quarter note.
There are common time signatures, or simple time, such as 4/4 time or any number able to be dividable by 2 or 4. Compound time signatures such as 3/4 time or any number dividable by 3, 6, 9, or 12. Then you get to complex time signatures, or asymmetrical, in which uses prime numbers on the top numeral of a time signature such as 5, 7, 11, 14, etc.
At simple time signatures, a quarter note takes one beat. In compound time signatures, a dotted quarter note is equal to one beat. In cut time or alla breve time, a single beat is a half note.
Most regular musical meters are either simple or compound meters. The term "simple" and "compound" refer to the natural divisions of the pulse within each measure. In simple time, the pulse divides into two equal halves. Most music shows this by using quavers that divide into semi-quavers (or, quarter notes dividing into eighth notes). One would count the rhythm as 1 & 2 & 3 & 4 &. Simple time can consist of two, three, or four pulses (ie. 2/4, 3/4, or 4/4 time). In all cases, each main pulse or beat of each measure would naturally divide into two sub-pulses. In compound time, the pulse divides into three equal portions. Most music shows this by writing each pulse as a dotted quaver (or dotted quarter note). Each dotted quaver divides into three equal semi-quavers, counted as 1 & a 2 & a. Compound time can consist of two, three, or four pulses. These time signatures are written as 6/8, 9/8 or 12/8. In all cases of compound meter, the top number is a multiple of 3, because the number represents the number of groupings of 3 (6 = 2 groups of 3, 9 = 3 groups of 3, 12 = 4 groups of 3).
There are no certain amount of time signatures, but the most common time signature is 4/4. There are other common time signatures such as 3/4, 2/2, 6/8, and 2/4, but basically any number can be used as the top number. There are songs in 5/4, 7/4, 11/4, 15/8 etc....
Simple, Compound, and Complex. These are the three types of Time Signatures
Crotchets are also known as quarter notes. In simple time signatures, a quarter note gets one beat. In compound time signatures, the unit beat is a dotted quarter note.
2/4 3/4 4/4 and 3/8 are the simple time signatures.
There are common time signatures, or simple time, such as 4/4 time or any number able to be dividable by 2 or 4. Compound time signatures such as 3/4 time or any number dividable by 3, 6, 9, or 12. Then you get to complex time signatures, or asymmetrical, in which uses prime numbers on the top numeral of a time signature such as 5, 7, 11, 14, etc.
The Time signature will usually be numbers...just look on the music until you see numbers that look like a fraction. Sometime there is a capital C or a capital C with a vertical line. Those are also time signatures.
12
At simple time signatures, a quarter note takes one beat. In compound time signatures, a dotted quarter note is equal to one beat. In cut time or alla breve time, a single beat is a half note.
4
Most regular musical meters are either simple or compound meters. The term "simple" and "compound" refer to the natural divisions of the pulse within each measure. In simple time, the pulse divides into two equal halves. Most music shows this by using quavers that divide into semi-quavers (or, quarter notes dividing into eighth notes). One would count the rhythm as 1 & 2 & 3 & 4 &. Simple time can consist of two, three, or four pulses (ie. 2/4, 3/4, or 4/4 time). In all cases, each main pulse or beat of each measure would naturally divide into two sub-pulses. In compound time, the pulse divides into three equal portions. Most music shows this by writing each pulse as a dotted quaver (or dotted quarter note). Each dotted quaver divides into three equal semi-quavers, counted as 1 & a 2 & a. Compound time can consist of two, three, or four pulses. These time signatures are written as 6/8, 9/8 or 12/8. In all cases of compound meter, the top number is a multiple of 3, because the number represents the number of groupings of 3 (6 = 2 groups of 3, 9 = 3 groups of 3, 12 = 4 groups of 3).
The number of signatures needed to pass a petition will depend on what type of petition it is and how it was set up at the beginning. There is no specific number as to how many signatures are needed for a petition to pass.
it tells you how many beats are in the measure
Quavers or smaller notes are grouped together by beams. If there are two parallel beams, the notes should be semi quavers. In usual practice, these are grouped in crotchets in simple time signatures.