Introduction to Voice User Interfaces (Part -- 1)

It starts with voice to text. Speech recognition is historically hard for machines but easy for people and is an important goal of AI. As a person speaks into a microphone, sound vibrations are converted to an audio signal. This signal can be sampled at some rate and those samples converted into vectors of component frequencies. These vectors represent features of sound in a data set, so this step can be thought of as feature extraction.