1. An impact-sensing and measurement system, comprising: at least one impact sensor; a first controller in communication with the at least one impact sensor, the first controller comprising a controller microprocessor having a control program software executed thereon at least for processing data from the at least one impact sensor; and a feedback device in communication with the first controller, the feedback device being configured to produce an audio or video output, or combined audio and visual output, based on impact data produced by the impact sensor upon sensing an impact and processed by the first controller.