Face-Tracking Directional Speaker for Targeted Sound Control
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Solution Overview
Problem
Conventional sound amplifying devices lack directional control and cannot selectively broadcast sound to a designated person in environments with multiple individuals, leading to inefficient use of space and disturbance to others.
Innovation Solution
An automatically controlled directional speaker system that combines a sound amplifying device with an image capture device, computing unit, and motorized controls for real-time face recognition and sound adjustment, integrated with an LED lamp for illumination, allowing precise sound direction and volume adjustment based on detected face information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a plurality of sound amplifying devices are installed at different positions to sense sound in full range, then the sound coverage is improved, but the setup cost and space occupation are increased
Solution Approach 1:
The sound amplifying device is made dynamically adjustable through an azimuth control motor that enables the device to rotate and change its sound projection direction automatically based on detected person positions, allowing one device to cover multiple areas sequentially rather than requiring multiple fixed devices simultaneously
Solution Approach 2:
The system automatically detects person positions using an image capture device and computing device, then autonomously adjusts the sound amplifying device's direction without manual intervention, enabling the device to serve multiple areas intelligently rather than requiring manual repositioning or multiple fixed devices
2Ease of operation
If manual remote control is used to control the broadcasting direction of the sound amplifying device, then the sound can be directed towards the listening target, but the user must keep controlling manually according to the moving status and cannot adjust the sound effect
Solution Approach 1:
The system uses an image capture device to detect person positions and a computing device to process this information, automatically controlling the azimuth motor to adjust the sound amplifying device's direction without requiring manual user intervention, thereby saving time and enabling automatic adaptation to moving targets
Solution Approach 2:
The system continuously detects the positions of listeners using the image capture device and uses this feedback information to automatically adjust the sound amplifying device's direction and volume through the azimuth control motor and amplitude control unit, creating a closed-loop system that adapts to changing conditions without manual input
3Adaptability or versatility
If sound amplifying device and lamp are installed separately, then each device can function independently, but the space occupying percentage is increased and available using space is decreased
Solution Approach 1:
The patent combines the sound amplifying device with a lamp into a single integrated unit, where the sound amplifying device includes components for both audio output and illumination, thereby reducing the total occupied space while maintaining the independent functionality of both devices through separate control circuits
Data Source
AI summary
An automatically controlled directional speaker includes a sound amplifying device, an image capture device, a computing device, an azimuth control motor and an amplitude control unit. The image capture device is provided for detecting the status of surrounding environment to generate image information, and the computing device is communicatively coupled to the image capture device for determining whether there is at least one face information in the image information, and the azimuth control motor is coupled to the sound amplifying device for controlling the azimuth of an output sound of the sound amplifying device according to the face information, and the amplitude control unit is communicatively coupled to the sound amplifying device for controlling the volume of the output sound of the sound amplifying device according to the face information. The speaker may be combined with a lamp to form an LED lamp with broadcasting and illumination functions.