Abstract: A signal generator for a musical instrument includes a voltage-controlled oscillator (VCO) comprising a control voltage input and a VCO output. The control voltage input controls a frequency of the VCO output. A controller is configured to control the voltage-controlled oscillator by inputting a sequence of analog control voltages from a plurality of preloaded control voltage inputs.

Abstract: An apparatus and method for the preparation of a censored recording of an audio source according to a procedure whereby no tangible, durable version of the original audio data is created in the course of preparing the censored record. Further, a method is provided for identifying target speech elements in a primary speech text by iteratively using portions of already identified target elements to locate further target elements that contain identical portions. The target speech elements, once identified, are removed from the primary speech text or rendered unintelligible to produce a censored record of the primary speech text. Copies of such censored primary speech text elements may be transmitted and stored with reduced security precautions.

Abstract: This invention is a railroad wayside signal system positioned adjacent to a railroad track that comprises a mast that is attached to a support structure in an upright position. A signal head having one or more signal lights is mounted to the mast such that a locomotive operator in an approaching locomotive can see the signal lights. The mast pivots with respect to the support structure between the upright position and a substantially horizontal position for maintaining and/or aligning the signal head and signal lights. The signal system may also be equipped with one or more actuators operatively connected to the signal head. A remote control unit is placed in communication with the actuators, and the remote control has an input mechanism for inputting a command representative of a direction of rotation of the signal head. The remote control also generates a signal in response to the input command that is representative of one or more directions of rotation.

Abstract: A railroad wayside signal cantilever (10) including an arm (22) with a signal mounting apparatus (28) that provides a degree of horizontal movement of the signal (26) relative to the cantilever mast (12). The available range of locations for securing the signal on the arm is sufficiently broad to allow a single cantilever design to be used for a wide range of site-specific locations. An extendable catwalk railing (54) is provided to accommodate movement of the signal without creating an unsafe gap between the railing and the signal.

Abstract: A control mechanism for moving switch points on a railroad track, having a drive screw driven by a motor, a traveling block moving along the drive screw to position the switch points, an end stop on the drive screw for limiting movement of the traveling block, a hand crank for manually turning the drive screw, and a torque limiting clutch on the hand crank.