Speech is the natural medium of human communication but audible speech can be overheard by
bystanders and excludes speech-disabled people. This work presents a speech recognizer based on
surface electromyography where electric potentials of the facial muscles are captured by
surface electrodes allowing speech to be processed nonacoustically. A system which was
state-of-the-art at the beginning of this book is substantially improved in terms of accuracy
flexibility and robustness.
