公开(公告)号：US3909727A

公开(公告)日：1975-09-30

申请号：US46249374

申请日：1974-04-19

Applicant: RCA CORP

Inventor： HUGHES CARROLL DUANE ,  PAINTER WALTER CHARLES ,  RYPINSKI CHANDOS ARTHUR

IPC: H03G3/00 ,  H03G3/34 ,  H04W88/02 ,  H04B1/10 ,  H04M11/00

CPC classification number: H04W88/027 ,  H03G3/005 ,  H03G3/34

Abstract: The suppression of speaker noise caused by data signaling in a mobile radio system is achieved by detecting the presence of a single audio tone frequency over a time period and when the presence of such a tone is detected causing muting of the speaker of the mobile radio receiver.

Abstract translation: 在移动无线电系统中由数据信令引起的扬声器噪声的抑制是通过在一段时间内检测单个音频音频的存在以及当检测到存在这样的音调导致移动无线电接收机的扬声器的静音而实现的 。