Science Fiction
Dictionary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
 |
RF Cochlea Chip 'Seashell Radio'
A chip dubbed the Radio Frequency Cochlea has been developed by MIT engineers Rahul Sarpeshkar, associate professor of electrical engineering and computer science, and his graduate student, Soumyajit Mandal. The device can be incorporated into a universal or software radio architecture that is designed to efficiently process a broad spectrum of signals including cellular phone, wireless Internet, FM, and other signals.
(Radio Frequency Cochlea chip)
The RF cochlea mimics the structure and function of the biological cochlea, which uses fluid mechanics, piezoelectrics and neural signal processing to convert sound waves into electrical signals that are sent to the brain.As sound waves enter the cochlea, they create mechanical waves in the cochlear membrane and the fluid of the inner ear, activating hair cells (cells that cause electrical signals to be sent to the brain). The cochlea can perceive a 100-fold range of frequencies -- in humans, from 100 to 10,000 Hz. Sarpeshkar used the same design principles in the RF cochlea to create a device that can perceive signals at million-fold higher frequencies, which includes radio signals for most commercial wireless applications.
The RF cochlea, embedded on a silicon chip measuring 1.5 mm by 3 mm, works as an analog spectrum analyzer, detecting the composition of any electromagnetic waves within its perception range. Electromagnetic waves travel through electronic inductors and capacitors (analogous to the biological cochlea's fluid and membrane). Electronic transistors play the role of the cochlea's hair cells.
Fans of science fiction Grandmaster Ray Bradbury well remember the Seashell Radios from his classic 1953 novel Fahrenheit 451:
...in her ears the little Seashells, the thimble radios tamped tight, and an electronic ocean of sound, of music and talk and music and talk coming in, coming in on the shore of her unsleeping mind.
See a fascinating video interview with Rahul Sarpeshkar and a discussion of bioelectronics. Read more at MIT; thanks to Winchell Chung for suggesting this story.
Scroll down for more stories in the same category. (Story submitted 6/4/2009)
Follow this kind of news @Technovelgy.| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
Would
you like to contribute a story tip?
It's easy:
Get the URL of the story, and the related sf author, and add
it here.
Comment/Join discussion ( 3 )
Related News Stories - (" Engineering ")
Has Musk Given Up On Full Self Driving (FSD)?
'...some bored drone pusher in a remote driving centre...' - Charles Stross, 2007.
Prufrock-3 'The Monster' Ready To Launch
Just go for it.
Hybrid Wind Solar Devices
'...the combined Wind-Suncatcher, like a spray of tulips mounted fanwise.' - Simpson Stokes, 1937.
BeamBike Solar Power Canopy For Electric Bikes
'The slender stalks of a sunshade-photocell collector...' - David Brin, 1990.
Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.
Science Fiction
Timeline
1600-1899
1900-1939
1940's 1950's
1960's 1970's
1980's 1990's
2000's 2010's
Current News
Miss Alabama Beauty Contest Offers Different Standards
'...they moved with the ease of dandelion puffs.'
Has Musk Given Up On Full Self Driving (FSD)?
'...some bored drone pusher in a remote driving centre...'
Prufrock-3 'The Monster' Ready To Launch
Just go for it.
Drones In Vast Airborne Grids
'These pods were programmed to hang in space in a hexagonal grid pattern...'
Starship Special Edition For Lunar Shuttle
Love those special edition spaceships.
Capturing Asteroids With Nets
'...the meteor caught and halted just as a small boy catches a swift ball in his cap.'
Project Hyperion - Generation Ship Designers Needed!
'We have decided that it shall be but one ship... it must contain everything needed to take us through the generations.'
AI Welfare Position At Anthropic Filled By Human
'You’re the robopsychologist of the plant, so you’re to study the robot itself...'
Marslink Proposed By SpaceX
'It was the heart of the Solar System's communication line...'
Simple Way To Defeat AI Face Recognition
'... designed to foil facial recognition systems.'
Wood-Panelled LignoSat Launched
'The Consul remembered his first glimpse of the kilometer-long treeship...'
Laser-Beam Welding In Orbital Factories
'His contract with Space Industries required him to work summers in their orbital factory.'
'Iceberg House' Of Travis Kelce Reflects Science Fiction Of Past Century
'The basement was huge... carved deep into the rock that folded up to underlie the ridge...'
Mechazilla Arms Catch A Falling Starship, But Check Out SF Landing-ARMS
'...the rocket’s landing-arms automatically unfolded.'
A System To Defeat AI Face Recognition
'...points and patches of light... sliding all over their faces in a programmed manner that had been designed to foil facial recognition systems.'
Robot Hand Separate From Robot
'The crawling, exploring object was V-Stephen's surgeon-hand...'
