Abstract: A filter and method for finite impulse response filtering an input signal is described. In one embodiment, the filter includes an input circuit configured to receive input samples in parallel, where the parallel input samples correspond to sequential samples of the input signal. In another embodiment, the filter includes a coefficient memory configured to store filter response coefficients and output a subset of those coefficients corresponding to a selected decimation factor.

Abstract: A system includes a housing, a speaker included in the housing, and a first transceiver associated with the housing to wirelessly transmit and receive audio content and control information. The speaker is able to produce audible signals from the audio content received by the transceiver. A plurality of remote speakers each have a transceiver. The transceivers of the remote speakers are able to communicate with each other and the first transceiver.

Abstract: A system includes a housing, a speaker included in the housing, and a first transceiver to wirelessly transmit and receive audio content and control information. The speaker is able to produce audible signals from the audio content received by the transceiver.

Abstract: In addition to other aspects disclosed, a docking station that receives content through a wired connection from a handheld media device, plays or displays the content through a speaker, and transmits content to a remote speaker.

Abstract: The present invention provides an apparatus and a method for using an ultrasonic probe to remove an occlusion in vascular access devices including fistulas, grafts, catheters and subcutaneous access devices. The ultrasonic probe is inserted into the vascular access device and a section of a longitudinal axis of the ultrasonic probe engages the occlusion. A transducer transmits an ultrasonic energy from an ultrasonic energy source that produces a transverse ultrasonic vibration along the longitudinal axis of the ultrasonic probe. The transverse ultrasonic vibration of the ultrasonic probe provides a plurality of transverse anti-nodes along a portion of the longitudinal axis of the ultrasonic probe that cause a cavitation in a medium in communication with the ultrasonic probe to ablate the occlusion.

Abstract: An ultrasonic medical device comprising an ultrasonic probe and a collet assembly for probe attachment and detachment, and a method of removing occlusions in blood vessels using the ultrasonic medical device. The probe detachability allows insertion, manipulation and withdrawal independently of a device body. The collet assembly comprises a compression clamp capable of releasably receiving the probe, and a compression housing that initiates a minimal area “line-contact” between the collet assembly segments upon engagement. A line-contact lip ensures consistent and repeatable contact between the compression clamp and the compression housing at a predetermined location to provide a consistent closing force on the probe for any selected tightening torque. The line-contact between the collet assembly segments provides efficient ultrasonic energy transfer from an ultrasonic energy source to the probe thereby increasing the probe efficiency during tissue ablation.