Diet Monitors Based On Chewing Sounds

Monitoring food consumption is an important part of any diet. At present, efforts to monitor diet are primarily manual recording of food consumed in logs (paper and electronic). Since the effort involved in maintaining a diet log is considerable, compliance is poor.

A group of researchers from the Wearable Computing Lab at the Swiss Federal Institute of Technology in Switzerland have looked into the possibility of detecting and classifying chewing sounds as a way to directly monitor food consumption. Although it is important to note that analysis of chewing sounds provides only part of the information needed, they found that

  • Good quality chewing sound signal can be obtained from a microphone placed in the ear canal (like a hearing aid).
  • Chewing sequences can be discriminated in the flow of sound that includes speaking, chewing and silence.
  • Single chews can be successfully delineated.
  • Analysis of chewing sounds makes it possible to determine what food is eaten.

Subjects were tested while eating potato chips, apples, mixed lettuce salads, pasta and rice. Potato chips provided the highest amplitude signals, with an average of just 5.5 chews per chewing sequence. Rice had the smallest amplitude signal.


(Sample sound captures (pdf))

Read more about dietary chewing sounds (pdf). Found this story via pasta and vinegar.

Scroll down for more stories in the same category. (Story submitted 6/19/2006)

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 ( 0 )

Related News Stories - (" Food ")

Mmm, Tasty Duck From A Petri Dish
'Laboratories in every city had produced synthetic food and meats, grown in large test tubes...' - David H. Keller, 1933.

Eden-ISS, Greenhouse In Antarctica
'With this kind of light we could get the gardens going again." - Barbara Humbly, 1983.

Pangorin Restaurant Service Robots
What'll you have? Jawa juice?

Chowbotics Salad Robot, Sally
'... gorgeous eating places where we were served entirely by mechanical apparatus.' - Edgar Rice Burroughs, 1912.

 

Google
  Web TechNovelgy.com   

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.

 

 

 

 

 

Current News

Orwell's Memory Hole Looms Larger Thanks To Nvidia
'All history was a palimpsest, scraped clean and reinscribed exactly as often as was necessary.'

Pipefish Robot Checks Pipes Cheap
Just like capsule endoscopy, but for bigger pipes. That go underground.

Nifty New SDS Space Debris Sensor For ISS
'Their radars... could easily pinpoint the debris of the early Space Age.'

NanoRacks Space Station Module Concept Validated
Space junk into space architecture.

Nuclear Drones Could Fly For Years
'I sent my eyes on their rounds and tended my gallery of one hundred-thirty changing pictures...'

SciFiQ Science Fiction Writing Aid
'Books were just a commodity that had to be produced, like jam or bootlaces.'

Robot Only Faster, Not Better, At Recycling
'Whenever a robot finds something it can't identify straight off... it puts whatever it is in the hopper outside your window.'

Poland Starts With 1000 Warmate 'Suicide Drones'
'Royal Security had told the pods to electrocute you or blast you into chum.'

Dream Of Building Your Own Rocket?
Fiorello Bodoni, you inspire all of us.

Zero Mass 'Vaporators' Pull Drinking Water From The Air
Did you think of Star Wars?

Elon Musk Fears A 'Fleet-Wide Hack' Of Autonomous Vehicles
'Khan grinned. 'It's alive! Bu-wahhahahah!''

China Melts Tibetan Permafrost To Plant Forest
'Can you give us a microwave spotlight?'

iFlytek Doctor Robot First To Pass Medical Exams
Doctor shortage? No problem, we'll just use the autodoc.

Slaughterbot AI KIller Quadcopter Drones
'The real border was defended by... a swarm of quasi-independent aerostats.'

Do We Really Want Backflipping Robots?
Also includes wonderful blooper reel.

RNA-Based Biocomputing Device
Living things can sense and analyze complex signals in living cells.

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.