COMPUTERS MASTERING SPEECH RECOGNITION
now the trick is to teach them to listen. Scientists and engineers have already made great strides toward achieving that goal. Machines are already being produced that recognize voices in a primitive way. And experts are confident that they will be able to build computers that will be competent to comprehend the human voice and carry out sophisticated spoken instructions. A number of products are being introduced that have an ability, however crude, to recognize spoken words. They are used already by quality inspectors in factories and baggage handlers in airports. Others will allow video games to be played by shouting commands, and personal computers to respond to such spoken orders as ''store'' and ''copy.'' Some of these devices, however simple-minded they are at the moment, will represent the initial consumer applications of what is considered a promising but extremely elusive technology. ''In the next two or three years there is going to be a dramatic emergence of speech recognition,'' said Janet Baker, president of Dragon Systems Inc., a company in West Newton, Mass., that specializes in speech recognition technology.