|Pira CZ Silence Detector is a freeware
application which guards presence of audio signal on recording line of PC sound card. If
no sound is present for a specified time, pre-defined tasks are executed. This application
is a perfect tool for any radio station where continuous audio is important. It's free
also for commercial stations.
Even if your broadcast automation system crashes or your radio link gets out, the
Pira CZ Silence Detector will make the steps to repair it, switch to backup audio source
and inform executive person. Don't be afraid of hours of silence anymore!
Pira CZ Silence Detector: piraside_1.3a_setup.exe
(1 MB, version 1.3a)
Older versions: 1.3, 1.2d, 1.1.
a hardware based solution for your FM station?
Look at our P175 FM
Analyzer with alarm output facility!
This device can detect not only the silence but also FM carrier loss,
overmodulation and more!
Basically the Silence Detector can occur in two
statuses: Alarm not active and Silence! Switching
between these two statuses depends on conditions specified. For both switching ways extra
task queue can be defined (Alarm Tasks and Return Tasks). Number of tasks and adjusting
elements is highly above standard. The Pira CZ Silence Detector can:
- Send alert email message (supports also SSL
- Save actual screenshot (and optionally attach it to
- Run application(s), play backup mp3 file(s)
- Reboot/shutdown the system
- Kill application(s)
- Drive port pin
- Send HTTP query (inform about the status on your web
- Speak using the Windows SAPI
- and more!
- Pentium 266 MHz or better
- 16-bit sound card
- Windows: from 95 to Seven, Linux: Wine
Application Examples - Advanced Use
|Example 1 -
Driving a relay from serial COM port pin:
Basic serial port (DTR signal) to relay
The +5 V can be found for example on USB or you may use external adapter.
|Example 2 -
Updating the status on a web site using the HTTP query:
HTTP query settings.
ASP file axample (PHP will look similarly):
<% dim s
if s<>"" then
If (fs.FileExists(Server.MapPath("text.txt")))=true Then
set fs=Nothing %>
This file is placed on this server at http://pira.cz/eng/test.asp. You may use it
directly for test purposes.
|Example 3 -
Uploading a file via FTP:
The application can upload any file to any FTP
server or make any other FTP related operations using the FTP client built-in in Windows.
It has been tested on Windows XP Professional.
Create a text file (for example ftp.txt placed in
c:\) with the following content:
In the Pira CZ Silence Detector add this record to
the Open/Play task:
||/c ftp -s:c:\ftp.txt
For any details refer to the FTP service description
or read your FTP server documentation or type "ftp -?" in command console.
|Example 4 -
Sending a text via serial RS232 COM port:
This way can be also used to control any AT commands
enabled serial modem by placing the AT commands instead of the text message. It's also
possible to control any other serial device that supports ASCII communication.
Create a batch file (for example serial.bat) with
the following or similar content:
echo This is the text to send > com1
The first line configures appropriate COM port using
the MODE command.
In the Pira CZ Silence Detector add the batch file
to the Open/Play task.
Community & Support
Visit the on-line forum!
Support for the Silence Detector software is
provided solely in the forum. Email support is not available for this software.