I have excel sheet with 2 column,time and amplitude.please tell me how to create signal using this data.(time,amplitude) (13:06:35,-1.777) (13:06:40 ,-1.934) (13:06:45 ,-1.855) (13:06:50 ,-1.855) (13:06:55,-1.914) (13:07:00 ,-1.855) (13:07:05,-1.797) (13:07:10,-1.719) (13:07:15,-1.797) (13:07:20 ,-1.699) (13:07:25,-1.543) (13:07:30 ,-1.602) 13:07:35 -1.582 13:07:40 -1.68 13:07:45 -1.68 13:07:50 -1.738 13:07:55 -1.68