Speech scientists are developing a system that can monitor fatigue levels by looking for signs of tiredness in the voice, with plans for its initial use by heavy construction vehicle drivers. Matthew Stock reports.
01:49
01:43
01:03
00:32
01:31
01:09
01:17
01:23
00:38
01:26
01:22
01:31
01:08
01:26
01:19
01:04
01:07
01:19
00:58
01:39
01:47
01:03
01:49
01:26
01:39
01:31
01:09
00:41
00:52
02:39
01:01
01:27
01:01
01:20
01:53
01:06
01:07
01:28
02:02
01:27
00:32
01:31
01:31
00:58
01:26
01:49
00:57
01:40
01:49
00:28
01:04
02:01
01:23
01:16
03:26
01:35
01:24
01:19
01:50
01:23
02:21
01:27
00:47
00:56
01:19
01:25
01:03
01:11
01:03
01:23
00:51
01:24
01:43
01:11
01:58
01:07
02:16
00:45
00:32
01:31
01:19
01:42
01:35
01:41
02:08
01:51
01:51
01:20
01:02
01:34
02:56
01:20
01:39
02:13
01:26
01:29
01:16
00:51
00:55
01:09
01:03
01:16
01:50
00:53
03:21
01:33
01:21
01:22
02:18
01:16
01:42
01:25
01:27
02:27
02:27
01:30
01:51
01:43
01:07
00:44