초록 ▼

A sound projection device for use in speaking to one or more specific persons on a selective basis, the device including a housing having a directional aspect for aiming the housing at a target area, a gripping handle coupled to the housing to enable the device to be held in a user's hand, and a par

A sound projection device for use in speaking to one or more specific persons on a selective basis, the device including a housing having a directional aspect for aiming the housing at a target area, a gripping handle coupled to the housing to enable the device to be held in a user's hand, and a parametric speaker coupled to a front end of the housing for indirectly generating at least one new sonic frequency from at least two ultrasonic frequencies of different value. The housing includes a luminating source having a directional orientation substantially aligned with the directional aspect of the housing. The combination of light and directional sound source enables the user to visually identify the target area before transmitting the sonic frequency to the target.

대표청구항 ▼

[ What is claimed is:] [1.] A method for supplying directional sound and light from a voice projection device by indirectly generating at least one new sonic frequency which is a difference of at least two interacting ultrasonic frequencies, the method comprising the steps of:a) emitting from a peri

[ What is claimed is:] [1.] A method for supplying directional sound and light from a voice projection device by indirectly generating at least one new sonic frequency which is a difference of at least two interacting ultrasonic frequencies, the method comprising the steps of:a) emitting from a perimeter of the projection device at least one first ultrasonic frequency along a direction which is in alignment with a directional orientation of the projection device;b) emitting from the projection device a second ultrasonic frequency by means which cause the second ultrasonic frequency to interact with the first ultrasonic frequency to generate the new sonic frequency, wherein the second ultrasonic frequency has a frequency equal to the at least one first ultrasonic frequency plus at least one sideband corresponding to the at least one new sonic frequency;c) directing a light from within the perimeter of the projection device along the directional orientation toward a common target area with the new sonic frequency; andd) propagating a desired message as the new sonic frequency.