Abstract: A system providing for personalized real-time instructions for physical fitness training. A data storage medium stores data comprising a set of instructions for physical fitness training on one or more tracks. A playback device reads the instructions stored on the data storage medium and converts them to an audio signal. An audio speaker connected to the playback device provides the audio signal, comprising the set of instructions, to a user located proximate the speaker.

Abstract: A method and apparatus for detecting power quality or disturbance events, such as voltage swells, sags or impulses, in power signals at remote locations of a power distribution system and for conveying information relating to the power disturbances to a central location. Voltage and/or current signals in electric power lines are monitored and converted to low level analog signals. The low level signals are processed by analog processing circuits or are digitally sampled and processed by digital processing circuits to detect power disturbances. Each power disturbance is characterized according to multiple parameters. The characterization information is encoded into a single signal. This is done by assigning a subset of a range of possible values of the signal to represent a parameter and then assigning a value within each subset of the range to represent another parameter.