SPEAKER DEVICE FOR PROVIDING SPATIAL SOUND EFFECT BY USING ULTRASONIC SPEAKER

Smart overview of the Invention

The speaker device described is designed to provide a spatial sound effect using an ultrasonic speaker. It includes a front speaker and an ultrasonic speaker that delivers spatial audio signals through reflections in an indoor space. The device identifies spatial information of the environment and integrates a low frequency signal into the output from the front speaker. This signal is non-directional and its frequency is below a preset threshold, ensuring it blends seamlessly with the spatial effect audio signal.

Technical Background

Historically, speaker devices have evolved from simple induction and piezoelectric systems to advanced multi-channel configurations. These systems offer immersive sound experiences by utilizing multiple speaker units to create configurations like 5.1 or 7.1 channels. However, they often require complex installations and can be cumbersome in spaces with design constraints. The new speaker device aims to address these challenges by simplifying installation while still delivering a high-quality spatial sound effect.

Key Features

• Front Speaker Integration: The device incorporates a low frequency signal into the front speaker's output, enhancing the spatial audio experience without needing additional speakers.
• Ultrasonic Speaker Usage: High frequency signals are directed using the ultrasonic speaker, which reflects sound off surfaces to create a spatial effect.
• Spatial Information Identification: The device uses spatial information of the indoor space to determine the path and directivity for the ultrasonic speaker, optimizing sound delivery.
• Efficient Space Utilization: By reducing the need for multiple speaker units, the device allows for effective use of available space without compromising audio quality.

Operational Method

The speaker device processes audio by separating it into low and high frequency signals. The low frequency, being non-directional, is output through the front speaker. Meanwhile, the high frequency signal is directed by the ultrasonic speaker based on the spatial layout of the room. The device calculates the optimal path for these signals, adjusting the ultrasonic speaker's orientation to enhance the spatial sound effect. This method ensures a comprehensive audio experience without the need for traditional surround or rear speakers.

Implementation and Benefits

This speaker system provides a solution for environments where space is limited or where aesthetic considerations prevent the installation of multiple speaker units. By leveraging ultrasonic technology and spatial information, it delivers an immersive audio experience with minimal equipment. This approach not only simplifies installation but also maintains high audio quality, making it an attractive option for modern audio systems.