公开(公告)号：EP0617865A4

公开(公告)日：1994-11-09

申请号：EP93901302

申请日：1992-12-10

申请人： BOLT BERANEK & NEWMAN

发明人： PREUSS ROBERT DAVID ,  ROUKOS SALIM ESTEPHAN ,  HUGGINS A W F ,  GISH HERBERT ,  BERGAMO MARCOS ANTONIO ,  PETERSON PATRICK MANGAN ,  DERR ALAN GREGORY

IPC分类号： G10L19/00 ,  G11B20/00 ,  G11B20/10 ,  G11B20/18 ,  H03M5/04 ,  H04B1/66 ,  H04B1/707 ,  H04L5/00 ,  H04N5/92

CPC分类号： G11B20/00913 ,  G10L19/018 ,  G11B20/00086 ,  G11B20/10009 ,  G11B20/10527 ,  G11B20/1813 ,  H03M5/04 ,  H04B1/665 ,  H04B1/707

摘要： In this embedded signalling system a sequence of code symbols representing digital information is generated (100). A code signal representing this sequence is generated (200), which is dynamically filtered to form a modified code signal (300), which is combined (400) with a higher level audio signal to form a composite audio signal for transmission.