The Acouspade™ directional speaker lets you direct a focused beam of sound to a precise spot in any space. This allows you to deliver targeted audio content directly to listeners while keeping surrounding areas quiet, or even supporting multiple independent audio zones in the same room without overlap or interference.
In loud environments, the tight audio beam slices through ambient noise, creating a private, headphone-style listening experience for the person in the beam's path. By shaping sound into a narrow, laser-like column, Acouspade makes it possible to position audio exactly where it's most effective, turning ordinary locations into personalized acoustic zones.
Developed through years of research into non-linear directional sound technology, Acouspade produces remarkably clear, high-fidelity audio with minimal distortion, excellent frequency coverage (down to authentic bass reproduction at 150 Hz), and an impressively low noise floor. Setup is simple: connect your audio source (phone, laptop, media player, etc.) via RCA or Bluetooth, and you're ready to go.
Acouspade harnesses Parametric Acoustic Array (PAA) technology. It emits a powerful, tightly focused ultrasonic carrier wave (~40 kHz) modulated with the desired audio signal. Thanks to the non-linear properties of air under high sound pressure, the ultrasonic beam demodulates along its path, generating new audible frequencies directly in the air. The result is a narrow, directional beam of sound that forms a virtual array of sources—creating sharp focus with almost no spill outside the intended zone.
The system uses high-performance Lead Zirconate Titanate (PZT) ceramic transducers capable of generating intense ultrasound levels (up to 126 dB SPL at 40 kHz). A patent-pending, fully digital signal processing chain and ultra-efficient Class-D amplifier eliminate the need for a heat sink, allowing everything to fit inside an ultra-slim 22 mm flat-panel design.
The dual separated emitter panels are carefully arranged to concentrate energy toward listeners' ears rather than wasting it across the facial region, delivering clearer, more efficient sound.
The new Acouspade is the first directional speaker on the market that offers wireless content management via Bluetooth connection, which introduces completely new applications of the directional speaker. Imagine having a restaurant where each table occupies its own audio zone and enables the guest to play its own music from his smartphone. The bluetooth connection is integrated in all Acouspade AB(S)-134-DUMA-M/S models.
Acouspade ABS-134-DUMA-M/S
The Acouspade speaker can be equiped with a motion detection system, which can trigger audio content from an external Bluetooth player at the moment when the listener approaches the speaker.
Acouspade is available in three different colours: black, white and grey.
Spotlight mode
In case the Acouspade directional speaker is mounted on the same wall – on top or bellow the digital sign, it needs to point diagonally downwards or upwards respectively, in order for the audio beam to reach all possible heights of users. In this mode the sound can not always be heard at the exact same spot, since the listening spot will depend on the users height. In case of a digital-signage situation this should not be a problem since the listening spot will always be in front of the digital screen, but the distance of the sweet-spot from the screen will be determined by the person’s height and will vary within 1 to 2 meters. This mounting mode will also create more audible artifacts around the room, since the first surface (floor or ceiling) will be hit in a specific angle, which will reflect the sound to the next surface, and so on.
Sound shower mode
Ideally, the Acouspade directional speaker should be mounted on the ceiling, facing the floor. This creates a typical “sound-shower” situation, making the sound audible only at one spot in the room, while enabling it to be heard by people – of all heights – at the same spot. The sound-shower mode is also the best solution to minimize reflections of the sound and its audibility at different locations around the room. The sound starts to travel from the ceiling, bounces off the floor and is reflected back to the same spot at the ceiling, and so on.
Virtual speaker mode
A very interesting mounting situation is the “Virtual speaker mode”, where the speaker is not pointing directly towards the user. Instead, the speaker is pointing towards the digital sign, (or any other object that you want to draw attention to, by using directional sound) from which the sound beam bounces and arrives at the user indirectly. This situation makes it appear as if the sound originates from the object that it is being reflected from. The actual sound source remains hidden and is not noticed by the user.
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Ultrasonic and DSP processing
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Acouspade redefines how audio can be used in shared spaces—delivering private, powerful, crystal-clear sound only where it's wanted. Whether you're enhancing customer experiences, guiding attention in exhibits, or creating immersive zones, Acouspade gives you unmatched control over sound placement.
