A.色度信號(hào) B.亮度信號(hào) C.飽和度信號(hào) D.色差信號(hào)
A.I幀 B.P幀 C.B幀 D.P和B幀
A.檢查伴音制式是否正確或者音量是否適中 B.從伴音功放輸入端加干擾信號(hào),聽(tīng)揚(yáng)聲器反應(yīng) C.從鑒頻器輸出端加干擾信號(hào),聽(tīng)揚(yáng)聲器反應(yīng) D.檢查伴音解調(diào)電路及相關(guān)外圍電路是否故障