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Showing posts with label song. Show all posts
Showing posts with label song. Show all posts

January 2, 2011

Simple Rubber Device Mimics Complex Birdsongs & Implications for Human Voice

A team of US researchers at Harvard has developed a simple rubber device composed of two pieces of rubber replicating the 'vocal tract' and a motor that replicates the action of a contracting muscle. With this device, the researchers have been able to EXACTLY mimic the birdsong of a variety of species including the bengalese finches and vireos.

Given complex birdsongs have been faithfully reproduced with such a rudimentary device as shown here, it does suggest that complex neurologically processes are NOT required. In reality, physics is all that is needed with just a little brain power.


You can listen to samples of birdsongs produced by the device here (halfway down the page).

If birdsongs can be replicated with such a simple device, just maybe, better vocal cord devices can be created for humans who have lost the ability to produce a clear voice.

Humans can lose the ability to talk/sing clearly due to cancer, papillomas, scarring, paralysis, etc. Although research on vocal cords is active, I'm not aware of any projects pursuing complete replacement with a biological equivalent of the rubber band. In fact... I'm not aware of any research project being pursued to create the biologic rubber band in the first place.

If you read any textbooks describing the vocal cords, it does seem mind-numbingly complex which perhaps explains why researchers have been discouraged from pursuing this line of inquiry.

But, if it can be done for birdsongs whose vocal cords are anatomically similar to humans, than theoretically, a simple rubber band device can also be created mimic-ing the human voice. This does sound like a fun high school science project the more I think about it.

Once that has been achieved, the physical characteristics of this rubber band can be broken down and than replicated by biochemists to create a biologic equivalent (or biologically inert) rubber band which can than be transplanted into a human with a damaged vocal cord.

Even to just more faithfully replicate a human voice would be a boom for those whose voiceboxes have been completely removed due to cancer (laryngectomy). Current replacement talking devices sound like a robot using state-of-the-art electrolarynx. Watch video below:



Just a thought that I am sure is easier said than done.

Read the full article in the BBC here. Research paper on this topic to be published in near future.

June 8, 2010

Earworms (The Song That Is Stuck In Your Head)

An earworm is when there is a tune that gets stuck in your head that lasts for minutes to hours. It wasn't really much interest for scientists to study until recently when they were able to determine the "characteristics" of a good earworm. In a study published in the British Journal of Psychology in November 2009 titled "Earworms ('stuck song syndrome'): Towards a natural history of intrusive thoughts", they found that the best earworms are:

- Repetitive songs with lots of la-la-las and doopity-doopity-dahs.
- Very familiar songs and it’s usually the chorus that gets stuck.
- Simple songs with sappy lyrics
- Happen when people are in a positive emotional state
- Person usually participating in non-intellectual activities, like walking
- Musicians’ earworm usually lasts longer

No good tricks to get rid of an earworm unfortunately, though there's lots of anecdotal suggestions.

Read about this in an MSNBC article here.

There was also an NPR Radiolab episode about this here.

Read the research paper here.

Please comment on your best trick to get rid of an earworm!


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