What Are Ultrasonic Parametric Speakers? How They Work & Applications

Ultrasonic parametric speakers are directional audio devices that use ultrasonic carriers to create a focused listening area. By controlling where sound is projected, they can deliver audio to a specific location while reducing unwanted sound in surrounding areas.

This technology is widely used in museums, exhibitions, retail displays, digital signage, libraries, and other environments where localized audio is required. In this guide, we explain how ultrasonic parametric speakers work, their key advantages, common applications, and how Audfly's directional speaker solutions can be used in real-world projects.

1. What Are Ultrasonic Parametric Speakers and How Do They Work?

Ultrasonic parametric speakers use ultrasonic carriers to transmit modulated audio signals. As the ultrasonic waves propagate through the air, nonlinear interaction generates audible sound along the beam path. This allows the speaker to create a highly focused listening area and reduce sound spill into surrounding areas.

High Directivity: Ultrasonic parametric speakers can produce a highly focused sound beam, helping create localized listening zones.
Focused Sound Projection: Audio can be directed toward a specific listening area rather than being distributed broadly throughout a room.
Localized Audio: The technology is well suited to applications where different audio content needs to be associated with specific displays, exhibits, or listening areas.

2. Key Advantages of Ultrasonic Parametric Speakers

Ultrasonic parametric speakers provide several advantages for applications that require controlled and localized audio.

Focused Sound Delivery

Ultrasonic parametric speakers concentrate audio within a defined listening area, making them useful for applications where sound needs to be directed toward specific listeners, displays, or exhibits.

Reduced Sound Spill

The narrow sound projection can help reduce unwanted audio in surrounding areas, making it easier to operate multiple audio sources in the same space without excessive sound interference.

Localized Audio Experiences

Focused audio can support interactive exhibits, digital signage, retail displays, and other applications where audio content needs to be associated with a specific location.

3. Applications of Ultrasonic Parametric Speakers

Ultrasonic parametric speakers can be used in a wide range of environments where localized audio is required.

Museums & Galleries: Provide independent audio commentary for exhibits or display areas while reducing interference with nearby exhibits.
Retail & Digital Signage: Deliver targeted promotional messages or product information to specific display areas.
Exhibitions & Interactive Displays: Create focused audio for interactive installations, product demonstrations, and exhibition content.
Libraries & Public Spaces: Provide localized audio in environments where controlling sound spill is important.
Transportation Hubs: Deliver information or announcements to selected areas, gates, or terminals.

4. Audfly Ultrasonic Parametric Speaker Solutions

Audfly offers a range of directional speaker solutions for different indoor and outdoor applications, with models designed for different installation methods, sound coverage requirements, and application scenarios. Our ultrasonic parametric speaker lineup includes multiple models for various installation and application requirements. The Audfly Model B is one example of these ultrasonic directional speaker solutions, with its specifications and features detailed below.

Audfly Model B Directional Speaker

The Audfly Model B is a wall-mounted directional speaker based on ultrasonic parametric speaker technology. It is designed to deliver focused audio to a defined listening area while reducing unwanted sound in surrounding areas. The Model B is suitable for applications such as museums, exhibitions, retail displays, digital signage, and other localized audio installations.

Technical Specifications

Model	Max SPL	Directivity Angle	Frequency Range	Rated Power	Input	Dimensions	Weight
FSC5-B2-G	83±3dB @ 2m/1KHz	<15° (-20dB)	500Hz–20kHz	20W	3.5mm AUX / USB	294×169×29mm	1500g

Core Features

Focused Sound Delivery: Direct audio toward a defined listening zone.
Flexible Mounting: Suitable for wall or ceiling installation depending on the application.
Application Flexibility: Suitable for museums, exhibitions, retail displays, digital signage, and other localized audio applications.
Plug & Play: USB support for MP3 and WAV playback provides convenient operation.

Polar Pattern Visualization

Polar pattern and frequency response of the Audfly Model B directional speaker.

Watch It in Action

If you are looking for a directional speaker for a specific project, explore Audfly's directional speaker products or contact our team to discuss your application requirements.

5. Why Choose Audfly for Precision Audio Solutions

Audfly develops directional audio solutions for museums, exhibitions, retail, digital signage, libraries, and other professional applications. Our product range includes directional speaker solutions for different installation and application requirements, with customization and technical support available for project-specific needs.

6. Conclusion: Understanding Ultrasonic Parametric Speakers

Ultrasonic parametric speakers provide a practical way to create focused listening zones and reduce unwanted sound spill. They are particularly useful in museums, exhibitions, retail displays, digital signage, libraries, and other environments where localized audio is required.

Audfly provides a range of directional speaker solutions for different indoor and outdoor applications. If you are planning a project that requires focused audio, explore our directional speaker products or contact Audfly to discuss a suitable solution for your project.