[电] voice-operated loss control and suppressor

yǔ kòng sǔn shī kòng zhì hé yā zhì qì ㄩˇ ㄎㄨㄥˋ ㄙㄨㄣˇ ㄕ ㄎㄨㄥˋ ㄓˋ ㄏㄜˊ ㄧㄚ ㄓˋ ㄑㄧˋ