Abstract: A baseball training aid is provided which includes an audio or visual pitch indicator for simulating a baseball pitcher's pitch. The training aid further includes an impact sensor, preferably in the form of a microphone, for detecting whether a practicing batter's swing is timely, premature or late. The audio signals produced by the microphone are processed by a processor to determine the timeliness of the batter's swing. The results are then communicated to the batter using an audio or visual feedback indicator.

Abstract: A baseball training aid is provided which includes an audio or visual pitch indicator for simulating a baseball pitcher's pitch. The training aid further includes an impact sensor, preferably in the form of a microphone, for detecting whether a practicing batter's swing is timely, premature or late. The audio signals produced by the microphone are processed by a processor to determine the timeliness of the batter's swing. The results are then communicated to the batter using an audio or visual feedback indicator.

Abstract: An automatic golf ball ranging system is provided for retrofitting existing passive golf ranges to include an electronic system for notifying golfers as to the distance between the impact of their golf ball on the range and the golfer's target. The automated golf ranging system includes a pod which is preferably self contained to include an independent power supply, one or more microphones for receiving the sound of a golf ball impacting the golf range, a processor for processing the sound made by the golf ball, and visual or audio indicators for providing feedback to the golfer. The processor performs modification, filtration and analysis of the amplitude of the ball impacting the golf range to estimate the distance between golf ball impact and target. In preferred embodiments, the processor filters out ambient background noise and the processor automatically adjusts itself to changing ambient sound levels.

Abstract: A mat is configured to be placed on a ground surface so as to have an upwardly-facing surface and provides multiple foot position demarcations formed on the upwardly-facing surface so as to represent the user's stance upon the mat. Multiple ball position demarcations formed on the upwardly-facing surface substantially opposite of the foot position demarcations represent the location of a ball relative to the user swinging a golf club and standing upon the mat at the location of the foot position demarcations.