1)speaker-independent recognition,与说话者无关的语音识别,与口音无关的语音识别2)speaker-dependent recognition,与口音相关的语音识别3)unvoiced speech recognition,无声语音识别4)speech recognition and understanding,语音识别与理解5)speech recognition and equipment,语音识别与设备6)VRAS Voice Recognition And Synthesis,语音识别与合成