OPPapers.com Essay Index >> Science >> Speech
We have many free term papers and essays on Speech. We also have a wide variety of research papers and book reports available to you for free. You can browse our collection of term papers or use our search engine.
Hate Speech. Hate Speech, Should it be Regulated? Hate speech, what is it? ... My opinion
is that yes, we should regulate hate speech on college campuses. ...
Free Speech. The Constitution of the United ... grievances" (Funk & Wagnalls
162). This Amendment guarantees each person of free speech. ...
On Racist Speech. ... the Board of Education, the fighting words exception principle,
and the idea of racist speech at "home". The infamous case of Brown vs. ...
REASONS FOR LIMITATIONS ON FREE SPEECH. The Constitution of ... & Wagnalls 162).
This Amendment guarantees each person of free speech. ...
Free Speech Can be Costly. ... So it's really not about his free speech, it's about
our own free speech and our ability to get our voice out there. ...
Submitted by abracadabra on April 21, 2008
Category: Science
Words: 2529 | Pages: 11
Views: 69
Popularity Rank: 105,457
Average Member Grade: N/A (Add a Comment / Grade this Paper)
A Speech Recognition Project
Abstract
Voice Recognition is a facinating field spanning several areas of computer science and mathematics. Reliable speech recognition is a hard problem, requiring a combination of many techniques, however modern methods have been able to achieve an impressive degree of accuracy. This project attempts to examine those techniques, and to apply them to build a simple voice recognition system. The project was started with three goals in mind. First, to be able distinguish 'yes' from 'no'. Second, to be able to recognize a vocabulary of 20 words, spoken individually. And third, to be able to recognize combinations of two or more words from this vocabulary spoken in close succession. The project is implemented in Matlab and was successful in achieving the first goal. It has been able to differentiate between a spoken 'yes' and a spoken 'no' with 100% accuracy among 24 samples taken from 8 different people. The method used is a simple one, involving a simple count of the frequency of zero crossings, but it is quite applicable to the voice recognition problem in general.
The Basic Steps
The process of voice recognition is typically divided into several well defined steps. Different systems vary on the nature of theses steps, as well as how each step is implemented, but the most successful systems follow a similar methodology.
Divide the sound wave into evenly spaced blocks
Process each block for important characteristics, such as strength across various frequency ranges, number of zero crossings, and total energy.
Using this charateristic vector, attempt to associate each block with a phone, which is the most basic unit of speech, producing a string of phones.
Find the word whose model is the most likely match to the string of phones which was produced.
Step 2 typically involves performing a spectrum analysis of the block. This...
You must Login to view the entire paper.
If you are not a member yet, Sign Up for free!