New transducer turns glasses into headphones without blocking the ear canal
July 26, 2012 // Nick Flaherty
HiWave Technologies in Cambridge has developed and patented a combination of bending wave transducer and electronics that it says can revolutionise the way audio signals are delivered to the listener.
When mounted onto the frames of spectacles, such as those used for 3D gaming, the Farina transducer stimulates the outer ear, or pinna, with a broadband audio signal, turning the spectacles into headsets. The user then hears via a combination of airborne sound and soft tissue conduction into the inner ear.
"Glasses that combine visual and audio input to the user are going to be a huge opportunity for us," said James Lewis, HiWave's CEO. "The goal for our customers will be to create eyewear that incorporates miniaturised display and audio components, and are completely wireless. With Farina audio, the mini-transducers will be embedded into the arms of the glasses where they touch the ears, and the amplifier circuitry will be a single chip that, together with the Bluetooth or other wireless chip will disappear into the frame. Our low-power techniques minimize the battery size so that this to can become an integral part of the frame. I believe that technology will open the eyes of product planners, marketing executives and industrial designers to consumer electronics concepts that have never been possible to implement before."
Farina transducers effectively turn the ear into a micro-loudspeaker but do not block external sounds that are received in the normal way via the ear canal. The human brain is adept at differentiating between the audio sources so the technology is ideal for sensory-immersive applications such as multi-user gaming, and augmented and virtual reality. It also provides safety benefits for sportsmen such as cyclists because they can listen to music on the move whilst maintaining complete awareness of their surroundings, including approaching cars.
The patents filed for the new technology include techniques for delivering multi-octave audio from a vibrating beam of miniaturised dimensions, and the methodology for matching the mechanical impedance of ceramic materials to the soft tissues of the human ear.
HiWave is currently demonstrating proof of concept to large companies and will have production-ready transducers available in Q4 2012. The Farina ceramic vibrating beam measures 25mm x 3mm x 0.6mm and delivers a multi-octave audio frequency range with strong bass and clear mid-to-high frequencies.
Ten deals that shaped analog, MEMS and sensors in 2014
December 22, 2014
The company merger and acquisition trend that characterized 2013 was still present in 2014 but was, perhaps, slightly less ...
Silicon more-than-Moore to drive MEMS, RF, LEDs
Goepel expands collaboration network in Asia
Alstom partners NTU Singapore to develop microgrid solution
Graphene oxide discovery helps boost rechargeable batteries
Endoscopic measurement method allows quieter, more reliable jet engines
December 21, 2014
A team of scientists from German aerospace research centre DLR has developed an optical measurement method that enables direct ...
Pathway to converting sunlight to electricity is indentified
How industrial IoT will drive the MEMS market indirectly
Successful with phones & drones, Parrot ponders farming
- New life for Embedded systems in the Internet of Things
- Virtualization and the Internet of Things
- RF/Microwave Instrumentation “S” Series Amplifiers
- Application Guide to RF Coaxial Connectors and Cables
InterviewCEO interview: Bosch's IoT startup is all about the system
Thorsten Mueller, CEO of Bosch Connected Devices and Solutions GmbH (Reutlingen, Germany), has been guiding the latest startup subsidiary of Robert Bosch GmbH since 2013 when he started the initiative ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Arrow Electronics is giving away ten BeMicro Max 10 FPGA evaluation boards together with an integrated USB-Blaster, each package being worth 90 Euros, for EETimes Europe's readers to win.
Designed to get you started with using an FPGA, the BeMicro Max 10 adopts Altera's non-volatile MAX 10 FPGA built on 55-nm flash process.
The MAX 10 FPGAs are claimed to revolutionize...MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.