## FLOW2000 for Brigid Burke

From Data to Notation: Flow 2000

The data used to create Flow 2000 is imaginary; the process of using the Reynolds number equation to create a sonic output offers a very different approach to Giles, who took existent data from an analysis of an object to for a basis for his composition. The Reynolds number equation has a variety of iterations depending on the properties of the object being tested, as this version of its use is to be performed with a flute the iteration based on pipes is used, this can be seen in the equation (Ahern 2007), this variation of the equation , which provides “a more general approach to turbulence when objects move through a fluid” (Nave 2012) does not form a substantive difference in outcome when used in the creation of sound.

The equation provides ten potential numbers to
be generated, one for each symbol and one for the inverse of the outcome of the
equation. These numbers provide the score as is shown in **Figure 5**.

This is a dynamic score, created in the Max environment, that responds to the performer and performance as it is taking place. The performer is able to interpret the score within a few paradigms; for example: air pressure 1 - 10 refers to the pressure the performer should apply to exciting the playing the note indicated below, the angel of embouchure indicates the position the performer should angle the flute in relation to their mouth, key depression indicates the amount to which the performer should depress the keys in order to play the note, and units of time refer to the number of beat the performer should take to play the particular note. The performer can set the unit of time prior to performance in relation to their experience of the dynamics and reverberation time of the room.