Japanese startup Sensia Technology has unveiled what it describes as the first portable speaker made entirely of sound-emitting fabric. Instead of rigid diffusers and sealed enclosures, it uses flexible electronics, turning the entire fabric into a full-fledged sound emitter.
Japanese startup Sensia Technology has unveiled what it describes as the first portable speaker made entirely of sound-emitting fabric. Instead of rigid diffusers and sealed enclosures, it uses flexible electronics, turning the entire fabric into a full-fledged sound emitter.
Thin, lightweight, flexible e-textiles were first introduced in 2018 by researchers at Japan's National Institute of Advanced Industrial Science and Technology. Sensia's new product is the first commercial application of the development, which has been adapted into a consumer-ready format, TechSpot writes .
The design is based on an electrostatic emitter architecture that generates sound using electrostatic attraction and repulsion forces. Sensia's fabric integrates conductive fibers into a capacitor-like structure, where two flexible conductive layers are separated by a thin dielectric layer.
When an audio signal is applied, it modulates the electric field between these layers, causing the fabric to vibrate and subtly displace air. The result is audible sound that is evenly distributed across the entire surface of the fabric, without the need for local speakers.
The use of flexible electronics sets the Fabric Speaker Portable apart from previous textile audio products—such as speaker cushions—where rigid drivers were simply hidden under fabric upholstery. Those traditional designs often had uneven surfaces and created an uneven sound field.
The Sensia version, on the other hand, works evenly, emitting sound from every part of its surface. This eliminates dead zones and provides a subtler, more natural feel.
A small plastic module attached to one edge contains the power supply, wireless circuitry, and control electronics. According to the company's technical documentation, a single speaker can reach a sound pressure level of about 68 decibels, and a pair can reach about 71 decibels, which is comparable to the hum of a household vacuum cleaner at close range.
While Sensia doesn't disclose frequency range or distortion levels, the company positions the device as a solution for background and personal listening. It can be hung on a wall as a "sound tapestry" or placed under other fabric surfaces, such as a sheet or pillow.
So far, the Sensia development is just a niche prototype that shows how flexible microelectronics can completely change our perception of familiar gadgets.
