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Posted

Hello fellow composers.

 

I am learning  composition everyday and get to know more about polyrhythm and finally wanna using my composition as small elements.

 

please see screen shot .

 

we have 9:8 poly rhythm in 4/4 on score.

 

What I have my mind is I can see  common denominator 72 in 9:8 and split 9 into space  8.

 

But I can not related  how 9:8 poly rhythm take two beat in 4/4.How many value take one beat in this case ? and  which notes  divide 72 as subdivision.

 

What did I missed to fully understand this concept ? What do I have to understand first ?

Or Did I complete misunderstood

 

Or It's just  stupid question ?

 

Can somebody help me  please ?

 

Thanks in advance.

 

Lu

post-14839-0-78414400-1367733630_thumb.p

Posted

In the attached excerpt, it's 9 16th notes in the time of 8. I would treat this as a 3 quarter notes in the time of 2 with each quarter note being further divided into 3 parts to get 9.

Posted

Besides in the example you don't have any 4 going anyway, it's all triplets. So it just looks like something in three notated in four.

Posted

It's counting in 16ths.  There are 8 sixteenths in 2 quarters time.  It is saying to play 9 equally spaced notes, in the space of 8 sixteenths (2 quarters).

 

As I understand it:

 

----

 

Polymeter is two or more meters contained within a measure that completely match back up by the measure's end. 

Hence, 2 against 3  (2:3)

 

[in 3/4] We have 2 dotted quarters and 3 quarters at once,

 

[or in 2/4]  2 quarters, and 1 quarter note triplet at once - both filling the measure, and ready to start the cycle over again. 

 

If we think of meter as the pulse, then we have 2, or more pulses simultaneously.  In your case,  you have 9:8...same concept applies, though, this is just an irrational rhythmic device, rather than a meter itself. 

 

----

 

Polyrhythm is when it takes more than one measure to complete it's cycle. 

 

This is when I would use the common denominator approach.

If you were to use your 9:8, and were in a quarter note time say 4/4,  I would probably count in 1/8ths; 9/8 against 8/8. 

 

The common denominator is 72, so it would take 72 eighth notes before the cycle completed.  Generally, I don't even do the math.  If I were in 4/4 (8/8), then I would know it would take 9 measures of 8/8, to produce 72.  If I were in 9/8 time signature, I know it would take 8 measures.

---

 

 

 

Hope this helps...

Posted

It's counting in 16ths.  There are 8 sixteenths in 2 quarters time.  It is saying to play 9 equally spaced notes, in the space of 8 sixteenths (2 quarters).

 

As I understand it:

 

Polymeter is two or more meters contained within a measure that completely match back up by the measure's end.  Hence, 2 against 3.   (2:3)  We have 2 dotted quarters, and 3 quarters, or 2 quarters, and 1 quarter note triplet - both filling the measure, and ready to start the cycle over again.  If we think of meter as the pulse, then we have 2, or more pulses simultaneously.  In your case,  you have 9:8...same concept applies, though, this is just an irrational rhythmic device, rather than a meter itself. 

 

Polyrhythm is when it takes more than one measure to complete it's cycle.  This is when I would use the common denominator approach.

If you were to use your 9:8, and were in a quarter note time say 4/4,  I would probably count in 1/8ths, 9/8, against 8/8.  The common denominator is 72, so it would take 72 eighth notes before the cycle completed.  Generally, I don't even do the math.  If I were in 4/4 (8/8), then I would know it would take 9 measures of 8/8, to produce 72.  If I were in 9/8 time signature, I know it would take 8 measures.

 

Hope this helps...

 

Triple time is triple time. You could notate that as triplets and it would look better to me.

 

You are mixing up the two, I believe.

Posted

Hello , everyone. 

 

I wanna say to you guys thanks a lot and much appreciated.

 

When I read first time I didn't really understand what you guys talk about but now

I think I got an idea for this.

 

cheers!!!

 

Lu

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