THG TIM 2015, Техническое руководство

Страница: 28 / 48

TIM 2015 Technical Manual v1 (February 2018) Page 28
The maximum permissible length of assembled segments in any single time announcement is around 9.5 seconds ( maximum 9.8 ), the
remaining 0.5 ( 0.2 ) seconds unused (for technical reasons related to latency issues). Even if the announcement that you create ends at, say,
9.0 seconds, the Catalex module will remain silent until the start of the next three pips or long toneburst.
It is also important to note that the Catalex player becomes very confused if ever a new sound file is sent to it before it has finished playing
another file that it has already started. For this reason a consistent delay is provided between the end of the ‘Precisely’ or ‘And xx seconds’
recording and the start of the three pips or toneburst.
Special cases
There are two special cases, one in which the time of day message includes a preamble greeting such as ‘Good Morning’, ‘Good Afternoon’
or ‘Good Evening’ and the other when the time is given in 24-hour clock format.
When a preamble is used, we include additional files. For the John Doyle voice, they are 082. WAV (Good Morning), 083.WAV (Good
Afternoon) and 084.WAV (Good Evening). The software makes a check to see whether these files are present and if so, an on-screen message
indicates that a ‘USA voice’ has been selected.
Times in the 24-hour format include ‘hours’ files named 013.WAV to 024.WAV. Note that 024.WAV is used for zero hours (midnight)
because the file 000.WAV is not supported by the Catalex player. In other respects the format of the other phrases will be the same as the
existing British or North American types (such as ‘At the third stroke it will be 18.45 and 30 seconds’). For technical reasons the LCD
display still shows the time in 12-hour mode even though the voice is in 24-hour mode. As with preambles, the software makes a check to
see whether these additional 013 to 024 files are present and if so, an on-screen message indicates that a 24 Hour Voice has been selected.
Using this file structure
If you are creating your own audio files, you must use the standard TIM 2015 file structure, file names and file lengths. File names must be
numerical and in the format 001 to 255.WAV or 001 to 255.MP3 (this is a constraint of the Catalex module). According to the Catalex data
sheet you should be able to add text to filenames for user reference purposes, such as 001ABC.WAV and 024xyz.WAV. In theory the Catalex
sees only the numeric component of the file name. We have not tested this, however.