Abstract: The present invention relates to a method and apparatus for speech intelligibility enhancement. First, the noise estimator determines the amount of ambient noise when the listener is placed in a high ambient noise environment. Second, the perceptual feature associated with speech intelligibility is enhanced with minimal processing artifacts. Third, the listener's volume gain is automatically and adaptively adjusted based on the psycho-acoustic model. The method and apparatus has ample capability to enhance speech intelligibility in any noisy environment conditions, and hence it can be a more desired solution than manual volume adjustment. Thus, the present invention can be implemented in mobile handsets, telephones, public address systems, and the like.

Abstract: A mechanism is disclosed to provide pivotal motion between two movable members. The mechanism includes a hemispherical yoke connected to one of the movable members. A center support is connected to the remaining movable member and is nested within the yoke and spaced apart therefrom. A set of four radially projecting torsion bars are connected to the yoke and center support. The torsion bars are substantially coplanar and define a cross-shaped configuration in plan. Four braces are provided to interconnect adjacent torsion bars. Preferably, each of the torsion bars is surrounded by a tubular segment which is affixed to the radially outer end of the torsion bars. Preferably the radially inner portion of the torsion bar is supported by a rotatable bearing. The subject mechanism is low in profile, easy to mount and dismount, and provides a degree of elasticity in the vertical axis.