Abstract: Described embodiments generally relate to a hydrocyclone for isolating particles within a fluid. The hydrocyclone comprises an upper conical section defining at least one inlet to receive the fluid, a vortex finder extending into the upper conical section, and an overflow port fluidly connected to the vortex finder and configured to expel a portion of the fluid out of the upper conical section; and a lower conical section defining an underflow port to expel the remaining fluid out of the lower conical section, the lower conical section being fluidly connected to the upper conical section to define a single hollow volume. The shape of the hydrocyclone causes particles smaller than a predetermined size to be isolated by expelling the particles from the overflow port.

Abstract: A system for generating an audio message over a communications network that is at least partly in a voice representative of a character generally recognizable to a user. Either a voice message or text based message may be used to construct the audio message. Specific recordings of well known characters is stored in a storage means and background sound effects can be inserted into the audio message which are stored in database. The audio message is constructed by any one of the processing means and transmitted to a recipient for play back on a processing terminal.