Abstract: Embodiments are described for an adaptive audio system that processes audio data comprising a number of independent monophonic audio streams. One or more of the streams has associated with it metadata that specifies whether the stream is a channel-based or object-based stream. Channel-based streams have rendering information encoded by means of channel name; and the object-based streams have location information encoded through location expressions encoded in the associated metadata. A codec packages the independent audio streams into a single serial bitstream that contains all of the audio data. This configuration allows for the sound to be rendered according to an allocentric frame of reference, in which the rendering location of a sound is based on the characteristics of the playback environment (e.g., room size, shape, etc.) to correspond to the mixer's intent.

Abstract: A phased array antenna tile which is steered by microelectromechanical system (MEMS) switched time delay units (TDUs) in an array architecture which reduces the number of amplifiers and circulators needed for implementing an active aperture electronically scanned array antenna so as to minimize DC power consumption, cost and mass of the system, making it particularly adaptable for airborne and spaceborne radar applications.

Abstract: A battery powered radio transmitter of a cross-sectional diameter substantially equal to the cross-sectional diameter of an arrow shaft is positioned in series between the head and nock of a metallic hunting arrow. The transmitter section of the shaft is light in weight so as not to affect the normal flight characteristics of the arrow. The shaft portion between the transmitter and the nock acts as the antenna for the transmitter. A switch is provided for operation of the transmitter. A portable directional radio receiver of the same frequency as the transmitter is utilized by the hunter to track the spent arrow.