Abstract: An arrangement and a method for the utilization of audio signals as a feedback mechanism which is employed for the controlling of manufacturing processes; particularly for monitoring the process parameters and operating conditions.

Abstract: A visual display is provide for music associated with a theremin or, in general, any space-controlled electric instrument. The theremin is a space-controlled electric instrument that produces an output of sound corresponding to the motion of the user, without being touched by the user. The device establishes a correspondence between motion and electric signals, then between such signals and either light and sound, or just light.

Abstract: The present invention describes a method for a one-pass parsing algorithm for generation of a Polish string that computationally defines the maximal possible parallel execution of a general class of arithmetic expressions using one operator stack and two operand stacks. This invention relaxes the assumption that in a processor, only one operation can be performed at any given time.

Abstract: A motorized wheel-chair is equipped with one or more sensors for detecting obstacles. The detection method may be either radar or sonar (or both). An on-board computer processes these echoes and presents a visual or auditory display. With the benefit of these displays, the user issues voice commands (or exerts manual pressure) to maneuver appropriately the motorized wheelchair. One or more microphones pick up the sounds of the user's voice and transmit them to a computer. The computer decodes the maneuvering commands by speech-recognition techniques and transmits these commands to the wheelchair to effect the desired motion. In addition to speech recognition for decoding commands, voice (speaker) recognition is employed to determine authorized users.