話筒是向計(jì)算機(jī)提供（ ）的設(shè)備。A.音頻數(shù)字信號(hào) B.音頻模擬信號(hào) C.采樣信號(hào) D.音頻數(shù)字信號(hào)和采樣信號(hào)
