A tighter bound on the area occupied by a fractal image

We derive a bounding circle for a fractal image specified by an iterated function system. The radius of the bounding circle is smaller than those from previously published material. The bounding circle is important in fractal design and plotting software as it enables a fractal image to be scaled correctly to fit the screen of a digital computer

Enhancements to a pitch detection system

This paper describes some enhancements to a pitch detection algorithm presented in an earlier paper by the author. The enhancements reduce flickering between adjacent semitones when the algorithm is used as part of a pitch to MIDI converter. The enhancements also permit less memory space to be used and minimise accidental octave jumping. The enhancements illustrate the use of voting techniques for pattern recognition applications