The invention discloses a novel passive sound transformer, either a sound-booster or a sound-silencer, embodied as an acoustic waveguide, a specific shape of which provides for either amplifying the intensity of acoustic waves at the expense of both the heat energy and the concomitant turbulence of moving fluid wherein the amplified intensity of the acoustic waves is manifested as sound loudness boosting or, contrarywise, transforming the wave power of elastic waves into the heat of the ambient fluid.

Provided is a throat and a speaker system that can properly correct a path length of a sound wave. A throat according to an embodiment includes a first side wall, a second side wall, a third side wall, and a fourth side wall. A third opposing surface of the third side wall and a fourth opposing surface of the fourth side wall are each formed into a curved surface having a convex portion and a concave portion. The convex portion and the concave portion are so disposed as to oppose each other, and the convex portion and the concave portion are so disposed as to oppose each other. Amplitudes of the curved third opposing surface and the curved fourth opposing surface gradually decrease along a direction from a reference center line to a first opposing surface or a second opposing surface.

Provided is a throat and a speaker system that can properly correct a path length of a sound wave. A throat according to an embodiment includes a first side wall, a second side wall, a third side wall, and a fourth side wall. A third opposing surface of the third side wall and a fourth opposing surface of the fourth side wall are each formed into a curved surface having a convex portion and a concave portion. The convex portion and the concave portion are so disposed as to oppose each other, and the convex portion and the concave portion are so disposed as to oppose each other. Amplitudes of the curved third opposing surface and the curved fourth opposing surface gradually decrease along a direction from a reference center line to a first opposing surface or a second opposing surface.

Various embodiments of an earpiece for a mobile device. The earpiece is detachably mounted to the mobile device and provides sound amplification for a user.

Various embodiments of an earpiece for a mobile device. The earpiece is detachably mounted to the mobile device and provides sound amplification for a user.

An audio projection device having additional features or elements connected therewith. One or more lights or other illuminating elements may be connected with the audio projection device. The one or more lights or other illuminating elements may be disposed so as to illuminate through a portion of the audio projection device. One or more audible or other moveable elements may be connected or contained within a portion of the audio projection device. The one or more audible or moveable elements may be beads, or other spherical or other shaped components (e.g., rigid components) that are configured to make a sound (e.g., rattle) and/or be visible when they make contact with one another and/or other portions of the audio projection device. The audio projection device may be fully or partially transparent such that the one or more audible or moveable elements are viewable through material(s) of the audio projection device.

An audio projection device having additional features or elements connected therewith. One or more lights or other illuminating elements may be connected with the audio projection device. The one or more lights or other illuminating elements may be disposed so as to illuminate through a portion of the audio projection device. One or more audible or other moveable elements may be connected or contained within a portion of the audio projection device. The one or more audible or moveable elements may be beads, or other spherical or other shaped components (e.g., rigid components) that are configured to make a sound (e.g., rattle) and/or be visible when they make contact with one another and/or other portions of the audio projection device. The audio projection device may be fully or partially transparent such that the one or more audible or moveable elements are viewable through material(s) of the audio projection device.

Provided is a throat and a speaker system that can properly correct a path length of a sound wave. A throat according to an embodiment includes a first side wall, a second side wall, a third side wall, and a fourth side wall. A third opposing surface of the third side wall and a fourth opposing surface of the fourth side wall are each formed into a curved surface having a convex portion and a concave portion. The convex portion and the concave portion are so disposed as to oppose each other, and the convex portion and the concave portion are so disposed as to oppose each other. Amplitudes of the curved third opposing surface and the curved fourth opposing surface gradually decrease along a direction from a reference center line to a first opposing surface or a second opposing surface.

Provided is a throat and a speaker system that can properly correct a path length of a sound wave. A throat according to an embodiment includes a first side wall, a second side wall, a third side wall, and a fourth side wall. A third opposing surface of the third side wall and a fourth opposing surface of the fourth side wall are each formed into a curved surface having a convex portion and a concave portion. The convex portion and the concave portion are so disposed as to oppose each other, and the convex portion and the concave portion are so disposed as to oppose each other. Amplitudes of the curved third opposing surface and the curved fourth opposing surface gradually decrease along a direction from a reference center line to a first opposing surface or a second opposing surface.

Disclosed herein is a headset for enhanced hearing experience. The headset comprises a headband placed in a rear of a user's head facing inward for comfort and modernization. The headset includes at least two spherical assemblies that fit ears of plurality of users for augmenting sound for the users. The spherical assemblies comprise a first earcup attached to one end of the headband via an adapter assembly and a second earcup connected to the other end of the headband via the adapter assembly. The first earcup and the second cup have an inner surface for engagement against an ear of the user. The adapter assembly being pivotally attached to the headband and to the first earcup and the second earcup, permitting inward and outward pivotal movement of the first earcup and the second earcup with respect to the headband.