Method and apparatus for boosting an audible signal in a notification system
摘要
The present invention is an apparatus and a concomitant method for boosting the audio signal generated by at least one notification appliance in a supervised emergency voice evacuation system.
申请公布号
US8457330(B2)
申请公布日期
2013.06.04
申请号
US20080211663
申请日期
2008.09.16
申请人
CURRAN JOHN W.;APPLEGATE EDWARD V.;KOSICH JOSEPH;FETTERLY RICHARD H.;RUSSO, II ANTHONY W.;BIZJAK BRIAN E.;WHEELOCK, INC.
发明人
CURRAN JOHN W.;APPLEGATE EDWARD V.;KOSICH JOSEPH;FETTERLY RICHARD H.;RUSSO, II ANTHONY W.;BIZJAK BRIAN E.
