Videoconferencing system with horizontal and vertical microphone arrays
View Patent ↗A system and method for acoustic source location using a horizontal and vertical microphone array. Tilt sensors are provided within each array to allow full determination of the tilt of each array. Based on the acoustic source location results, an image capture device may be maneuvered to focus in the direction of the acoustic source location.
1. A videoconference system comprising:
a horizontal microphone array providing an output for each microphone;
a vertical microphone array providing an output for each microphone, said horizontal and vertical arrays capable of being positioned independently of each other;
logic receiving the microphone outputs of the horizontal and vertical arrays and determining the location of an acoustic source;
a controllable image capture device; and
a controller connected to said logic and said image capture device for directing said image capture device to aim at the determined acoustic source location
wherein said horizontal array and said vertical array each include an orientation sensor with an output, and wherein said logic uses said orientation sensor outputs to determine the location of the acoustic source.
2. The system of claim 1 , further comprising:
a microphone located adjacent said image capture device.
3. The system of claim 1 , wherein said logic comprises a gate array.
4. The system of claim 3 , wherein said gate array is programmable.
5. The system of claim 1 , wherein said logic includes a processor and a program to control said processor to determine the location of the acoustic source.
6. The system of claim 5 , wherein said controller includes said processor and a program to control said image capture device.
7. The system of claim 1 , wherein said horizontal array includes a plurality of microphones arranged in two dimensions.
8. The system of claim 7 , wherein said horizontal array includes two separate modules, each including a plurality of microphones arrayed in two dimensions.
9. The system of claim 1 , further comprising:
a speaker; and
a microphone located adjacent said speaker.
10. The system of claim 9 , further comprising:
a microphone located adjacent said image capture device.
11. A method for image capture device tracking comprising:
receiving an audio signal with a horizontal microphone array and a vertical microphone array and providing microphone out signals, the horizontal and vertical arrays capable of being positioned independently of each other;
analyzing the microphone output signals from the horizontal and vertical arrays and determining the acoustic source location;
maneuvering an image capture device to aim in the direction of the acoustic source location; and
determining the orientations of the horizontal and vertical arrays, wherein the orientations are used in determining the acoustic source location.
12. The method of claim 11 , wherein the horizontal array includes a plurality of microphones arranged in two dimensions.