Noise reduction for voice-activated car commands

Abstract

Speech communication is the most natural and quickest form of high-level communication for humans. It has long been an appealing goal to extend our abilities in this area to computers or other electronic devices, so that we could communicate with them with the same simplicity and speed which we communicate with other people. In addition, there are many circumstances when vocal communication has other advantages. For example, in vehicle environments the user can hands free control the navigation system or other functions of the vehicle while driving. Noise reduction is also important during calls or during conference talking inside buses. The article presents a spectral subtraction based noise reduction system with phase reconstruction for a two-microphone noise cancellation.