Coastal Weather Broadcast System
The CWBS system broadcasts Meteorological Bulletins at prescribed times. Bulletins are automatically assembled from the most recent weather forecast for specified locations or areas that are members of the bulletin. Although designed to run completely unattended, a simple graphical interface is provided for an operator to set up and modify Bulletin content and Schedule. This takes the form of an Area map of the controlled region that contains the locations for which Meteorological reports are expected. To define a new Bulletin, the operator depresses the buttons for each report to be included, in the order required, and assigns this selected set to a Bulletin. Any number of different Bulletins can be pre-defined in this way.
Any defined bulletin can be assigned to a schedule entry specifying the start time. A schedule entry can be made to repeat each hour or play only once each day. The Scheduler can accept multiple entries. The CWBS comprises three separate programs.
An Email client and Message Decoder with built in Text to Speech generator (AudioGen).
An Operator Management program (Message Scheduler).
A remote transmitter controller (Wave Player).
A separate Wave Player is used for each coastal radio transmitter but a single Message Scheduler can control and monitor multiple Wave Players.
Audio can be transmitted to remote transmitters by voice band analog audio or by using VOIP technology.
A typical CWBS screen is shown below.
In this example the Charleville Waveplayer is currently broadcasting the CW Warnings bulletin on the 0245 UTC time schedule. Objects shown in bright red are those with current audio files, any objects shown in light red are members of the current bulletin but no sound files exist for them at this time. Objects not members of the selected bulletin that have associated current audio files are shown in yellow, while those with expired or no file are shown in grey. To display the status of the Wiluna WavePlayer, the operator simply clicks the Wiluna button.
The weather forecast files are usually received from the Meteorological Service as attachments to Emails, sent to a specified Email address. The attached files are extracted and converted automatically to audio using an advanced Text-To-Speech engine. 'Phonetic' translation is applied to place names and Meteorological abbreviations are expanded into plain text.