The mp3 file I am using is using a 16,000 Hz sampling rate. That is more than what we are allowed to use (remember 16,080 is the max number of samples).
You can see in the figure about that the total number of samples is 23,040. Step 2: Select the audio segment you want by clicking at the start point in the waveform and dragging the mouse to the right until you reach the end of the sample you want. Step 1: Create a new Project and Open the source file. I have a mp3 of the ring tone used on the CTU desk phones. Be mindful of copyright infringement! We’ll use an example for the show 24. You can download this from where ever you want. To use Audacity to create a ring tone file you first need to find a source file. In the Windows version (1.2.6) you can set the selection format by going to View>Set Selection Format>Samples. In the 1.3 beta version you have a tool bar at the bottom of the screen where you can set the selection format from hh:mm:ss to “samples”. Audacity is nice enough to show you the number of samples. Just keep in mind that the final product needs to use the parameters above and should also have no fewer than 240 samples, no more than 16,080 samples, and the number of samples should be divisible by 240. You can now work with the file and edit as needed. When importing a file, you have to specify the parameters that Audacity should use to read the file.
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Once down loaded you can go to File>Import>Raw Data (Audacity 1.3 beta on Mac OS X) or Project>Import Raw Data (Audacity 1.2.6 on Windows). You need to download the ring tone file to your desktop (you can use a TFTP client to get the file).
You can use Audacity to import ring tone files from CUCM. The 1.3 beta has crashed on me once or twice but the interface has a number of enhancements that definitely make it worthwhile. I also have Audacity 1.2.6 on my Windows VM. I currently use Audacity 1.3 beta on Mac OS X. The latest release is available on sourceforge ( Audacity Download).
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Audacity has a pretty robust set of features for a free application. It runs on Windows, Mac OS X, and GNU/Linux platforms. Audacity is a free audio editor and recorder that has been around since 2000.
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