9.录音电话机(HL) 录音电话机大致可分为下面四种: (1)“留言”电话机 这种电话机是在普通电话机上增加了一个自动应答装置,所以又称作自动应答电话机。早期“留言”电话机是采用盒式录音带,近期已推出集成电路音频存储器产品。事先将主人告知对方的简单留言录下来,当有人来话时,振铃数次后可自动应答,把留言发送出去。其原理是录音时将话音信号转换成数字信息存储在随机存储 9. Recording Telephone (HL) The recording telephone can be broadly divided into the following four categories: (1) “Message” telephone This telephone is an automatic answering device added to an ordinary telephone, so it is also called an automatic answering telephone machine. Early “voice mail” is the use of cassette tape, has recently introduced integrated circuit audio memory products. Prior to the owner to tell each other a simple message recorded, when someone came, ringing automatically after a few answers, the message sent out. The principle is the voice signal is converted into digital information stored in random storage