Abstract: A mobile device is described. The mobile device includes an acoustic transducer that projects sound in a first direction and a second direction. A housing includes a cavity. The acoustic transducer is positioned in the housing to project sound in the first direction through an aperture in the housing. The transducer also projects sound in the second direction within the cavity. A first port is acoustically coupled to the cavity and acoustically isolated from the aperture. The sound projected in the second direction is emitted through the first port. A membrane covers the aperture and the first port. The membrane receives sound from the aperture and the first port and radiates the sound away from the housing.

Abstract: A method and apparatus for managing a display during a teleconference between a primary participant and one or more secondary participants is described herein. According to the present invention, a primary image corresponding to the primary participant and a subset of secondary images that correspond to secondary participants are displayed on first and second sections of the display, respectively. By scrolling through the secondary images during the teleconference, different subsets of the secondary images may be displayed. Another exemplary embodiment of the present invention comprises superimposing an image over another image. By adjusting the opacity of at least one of the images, the user may view and/or access both images during the teleconference. According to another exemplary embodiment, a user may interchange the primary image with a selected one of the secondary images, responsive to user input, to focus on the selected image.