Speech enhancement for robust speech recognition in car environments using Griffiths-Jim ANC based on two-paired microphones

Abstract

~ This paper presents a speech enhancement method wliiclt is to inipruve the speech recognition in car noisy enviromnents. Coiiventional single and two charinel algorirhms differ from recaynition performance accordirig to each microphone’s position (chanael). Moreover. there is an ever-iucreasing demand for safety in cars. and speech reci~ynitiun swtenrs are nowadays of”n used. i n this paper, we propose a method, hxhrid al~qorithm using the Griflths-Jim adaptive noise caricellution (ANC) based on two-paired microphones. which improved speech recognition result fiorn red~rced noise signal. The simulated experiments showed LIS that the proposed algorithm is effective in realized car environments. which is iinrelnted to channels in a car. Index Terms Adaptive noise cancellation (ANC) , GriflithsJim, Speech enhancements, Speech recognition, Spectral suhractian. I