Abstract: A telephone headset adapter includes a deck with a top surface for supporting a telephone. The deck is placed underneath a telephone, and the weight of the telephone is applied on the deck and stabilizes the deck. The deck includes a primary or fixed deck portion and a movable deck portion. The movable deck portion is coupled to the fixed deck portion by an extension slide. The movable deck portion is movable along the extension slide to vary the width of the deck. Thus, the deck can support and accommodate telephone sets of various sizes and configurations. Routing channels are also formed within the top surface of the deck for receiving cords that are used with the telephone set, handset, headset and accessories, thereby minimizing cord tangling and clutter. An electronic housing is removably coupled to an end of the deck. The electronic housing contains adapter components for coupling the telephone to the headset or handset.

Abstract: An adaptive transmit amplifier for automatically adjusting the transmit output characteristics of a headset adapter output stage includes a detector adapted to detect a value of a bias current in a host microphone transmit circuit. The adaptive transmit amplifier further includes a switching stage coupled to the detector and adapted to select a gain level and impedance level of the headset adapter output stage based upon the bias current value. The adaptive transmit amplifier may further include a logic/timing block coupled to the detector and to the switching stage. The logic/timing block is adapted to control a sequence of detection of the bias current and selection of the gain level and impedance level of the headset adapter output stage.

Abstract: A headset capable of being donned with one hand comprises a headband with a variety of possible hinges disposed between the edges of the headband. In response to flexing the hinge by bringing the edges of the headband towards each other, the headband opens up sufficiently to allow a user to place the headband comfortably over his head, releasing the hinge to provide a snug fit.

Abstract: An apparatus for discriminating between signals produced by a desired acoustic source and an undesired acoustic source includes: a first microphone disposed at a first distance from the desired acoustic source; at least a second microphone disposed at a second distance from the desired acoustic source; a proximity estimation block configured to utilize signals form the first microphone and second microphone to produce a signal representing an estimate of the proximity of the desired acoustic source; and a variable gain block configured to adjust the gain of an output signal from at least one of the microphones by utilizing the estimate of the proximity of the desired acoustic source.