Hearing device with a sound transducer and method for manufacturing a sound transducer

Simple SummaryContent extracted from patent full text and abstract with AI.

This patent describes a highly miniaturized sound transducer for hearing devices, such as hearing aids, headphones, or similar acoustic devices. The invention utilizes multiple tiny 'fingers' made from deformable materials (using inverse piezoelectric or magnetostrictive effects) that are actuated by controlled electrical or magnetic fields to produce sound. The design allows for precise control of sound output while maintaining a very small footprint, suitable for integration into compact devices. The patent also covers a method for manufacturing such transducers using microchip/MEMS processes.

Use CasesContent extracted from patent full text and abstract with AI.

• Hearing aids for people with hearing impairments
• Miniature headphones and earbuds
• Cochlear or bone conduction implants
• Wearable audio devices (ear-worn, smart glasses with sound output)
• Mobile device speakers
• Microphones or speakers in highly space-constrained electronic devices
• Acoustic sensors or alert systems in medical implants

BenefitsContent extracted from patent full text and abstract with AI.

• Extremely compact and lightweight sound transducers, ideal for miniature devices
• Highly precise control over sound characteristics due to micro-scale actuator design
• Lower distortion and improved sound quality at small sizes
• Customizable acoustic properties by varying finger lengths and materials
• Efficient manufacturing using MEMS (microelectromechanical systems) and microchip technologies
• Potential energy efficiency advantages by using piezoelectric or magnetostrictive actuation
• Hermetically sealed or membrane-covered designs enhance durability and prevent acoustic short-circuits

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The device has a sound converter (38) with a field producing device (24) e.g. microchip, for producing electrical or magnetic field and emitting devices (22) for producing airborne sound. The emitting devices include a number of fingers (10), where the field penetrates through the fingers. Shapes of the fingers are changed by the field for producing the sound. The fingers include active layers that are deformable by inverse piezoelectric effect or by magnetostrictive effect. The emitting devices include a membrane, which covers one of the fingers. An independent claim is also included for a method for manufacturing a sound converter.