This paper provides an system that takes acoustic-based input, as the name say, scratch. The user proposed to use a modified stethoscope through solid materials, a mic is attached to the surface. It is particularly good to amplifying sound and detecting high frequency noises. The author claim an average accuracy of 89.5%.
Discussion:
In my opinion, the major handicap of this idea is how to eliminate the noise. Compared wit sketch, scratch is much more noisy. And some systems even consider scratch itself as kind of noise. Maybe the stethoscope mic is the key to make this idea work. Well, I am not sure about the stethoscope. Make it plays all the magic in this paper.
The method itself is not scalable. haha.
ReplyDelete