Latest By
Category:
Armor
Artificial
Intelligence
Biology
Clothing
Communication
Computers
Culture
Data Storage
Displays
Engineering
Entertainment
Food
Input Devices
Lifestyle
Living Space
Manufacturing
Material
Media
Medical
Miscellaneous
Robotics
Security
Space Tech
Spacecraft
Surveillance
Transportation
Travel
Vehicle
Virtual
Person
Warfare
Weapon
Work
"Does it open a new horizon for my thinking? Does it lead me to think new kinds of thoughts, that I would not otherwise perhaps have thought at all? These qualities are what [make] science fiction ...unique."
- Frederik Pohl
 |
| Fenton Silencer | ||
| A device to cancel noise over a broad area. |
In this amusing story from Tales from the White Hart, one of the patrons of the pub tells the story of young Robert Fenton, who was stronger on practice than on theory - unfortunately.
| "Doubtless some of you will already see what I am driving at, and will appreciate the basic principle of the Fenton silencer... It consisted of a microphone, a special amplifier and a pair of loud speakers. Any sound that happened to be about was picked up by the mike, amplified and inverted so it was exactly out of phase with the original noise. Then it was pumped out of the speakers, the original wave and the new one cancelled out, and the net result was silence. Of course, there was rather more to it than that. [But]... it's a simple application of negative feedback. |
| From Tales from the White Hart,
by Arthur C. Clarke. Published by Ballantine Books in 1957 Additional resources -
|
This is from Silence Please, the first story in this book of short stories, first published in 1957.
This story offers good engineering detail on noise cancellation; however, I think that Robert Heinlein's hush corner beats the Fenton Silencer by a nose, having been published in Double Star in 1956. Also, see the isolation barrage from Wandl, The Invader (1939) by Ray Cummings.
Thanks to Paul, who wrote in about this story in a comment on another technovelgy item.
Comment/Join this discussion ( 1 ) | RSS/XML | Blog This |
Additional
resources:
More Ideas
and Technology from Tales from the White Hart
More Ideas
and Technology by Arthur C. Clarke
Tech news articles related to Tales from the White Hart
Tech news articles related to works by Arthur C. Clarke
Fenton Silencer-related
news articles:
- Noise-Cancelling Windows With Piezoelectric Patches
- Speechjammer To End Your 1st Amendment Rights
| Has Climate Change Already Been Solved By Aliens? |
| Skin Electronics 3D Printed |
| Super-Resolution Microscopy Provides '4D' Views |
| Physicists Try To Turn Light Into Matter |
Want to Contribute an
Item?
It's easy:
Get the name of the item, a
quote, the book's name and the author's name, and Add
it here.
| <Previous | Next> |
|
|
|
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.
|
'The car surged and lifted, clearing its top by a negligible margin.'
Science fiction authors are serious about sleep, too.
'I had explained," said Nessus, "that our civilisation was dying in its own waste heat.'
'Just what did I want Flexible Frank to do? - any work a human being does around a house.'
SF writers have thought about this since the 19th century.
There's a lesson in this for neural net AI engineers everywhere.
