Return to main tools page

AnalogModulation is a bundling of a Java-language program TF32JMod, its supporting Java and native library modules, the Java runtime (OpenJDK) along with the Eclipse IDE (integrated development environment). Eclipse and the Java JDK are redistributed under the terms of their respective licenses. The TF32J and TF32JMod Java programs along with Java plug-in modules for analog modulation and their supporting libraries contained in the below .zip file are made available here for free download for academic or non-commercial use. The TF32J Javadocs is a resource in making changes to TF32JMod.

This revision of AnalogModulationCDT, now with Windows and MacOS versions, divides the Java project into myjava as done earlier and the new runjava project. Upon starting TF32JMod from the runjava project, it is possible to change and recompile signal filters in myjava and see the changes in the running instance of TF32JMod. It is important when editing a filter Java source code to manually save the changes because this will not happen automatically as when launching a Java program. Build the myjava project and the changes should be available to the active TF32JMod application through use of the Java Class Loader feature. It was necessary to make myjava and runjava separate directories because runjava containing TF32JMod.java and its compiled classes needs to be on a classpath, and myjava needs to be not on this classpath for the "hot updating" of filters to work.

AnalogModulationCDT.zip In Windows, unzipping this file creates the subdirectory AnalogModulationCDT in your destination directory. If your computer is configured for a language with an extended character set, it may be necessary to make your destination directory as close as possible in your directory hierarchy to the root directory of the drive where you extract it -- this action prevents problems with overly long file path names. You can also use this file for Linux, but you will need to install Eclipse for Java and its CDT extension along with the required Java runtime (JDK) separately and manually configure the Eclipse projects.

The Windows version of the AnalogModulation software bundle uses the non-restricted OpenJDK 10 (supplied by Azul Systems, Inc. https://www.azul.com/) in place of the Oracle JDK that has new use restrictions starting in 2019. This version of the bundle also extends Eclipse with the C/C++ Development Toolbench (CDT) and adds the open-source mingw64 (minimum GNU tools for Windows 64-bit) package containing the gcc C/C++ compiler invoked by this configuration of Eclipse CDT. The pre-configured Eclipse project vocfilt allows compiling the supplied native-code filters -- after a successful "build", invoke replaceDLL.bat from the AnalogModulationCDT directory to copy vocfilt.dll from its location within the Eclipse workspace for the vocfilt project to the TF32lib subdirectory of AnalogModulationCDT from where these filters are invoked.

Run the file eclipseCDT.bat within that subdirectory, either from a command window or using a desktop shortcut, to modify or run the TF32JMod program hosting the modulation and demodulation menu commands within the TF32J Time-frequency analysis for Java waveform and spectrum visualization program.

AnalogModulationCDTMacOS.zip Downloading this file places the folder AnalogModulationCDT in Downloads. Move this folder to your Home Directory. On the Eclipse.org download site, do not select the "Eclipse Installer", rather, click on the link "Download packages" to select the .DMG file. Move the Eclipse app from the DMG to your new AnalogModulationCDT folder. This version of Eclipse for MacOS already comes with the Java runtime so whether or not your system already has Java, you do not need another installation step. Double click on Eclipse in that folder and enter the eclipse-workspace subfolder in the dialog asking for the Eclipse Workspace -- if you do not see that dialog, you can change this setting from the Eclipse menu with File, Switch Workspace (it is towards the bottom). You can make your AnalogModulationCDT folder "portable" by specifying ../../../eclipse-workspace (meaning three levels up from the Eclipse executable module, which isthat many levels deep inside the Eclipse app folder). to your user directory.

To modify and rebuild the pre-configured vocfilt project, search the Web for "Install EclipseCDT." Follow the instructions for adding the C/C++ Development Toolbench (CDT) to your existing Eclipse installation. This involves copying the supplied Web link, starting Eclipse on your computer, selecting from the menu Help, Install New Software, and pasting that link into the dialog. On pressing Enter, you need to select the parts of CDT you want to install -- selecting the first entry appears to be good enough, but you can repeat this process to install the remaining entries later. Once you have clicked through to finish, you need to wait for completion that takes some time, after which you will be prompted to restart Eclipse. When you select the vocfilt project and attempt to build it, you may be prompted that you need the XCode command-line tools. Ignore the "App store" button and press the blue "Install" button to get the express download of only the items you need. You may or may not need a login for an Apple Account -- creating this account asks for your e-mail, your choice of a password and a phone number. You need to confirm receipt of a numeric code, and I found that the choice for "Voice" kept sending a hangup call to my home number, and when I selected "Text" and supplied my cellphone number, it sent me a voice message instead, which is ironic given Apple's "It just works" catchphrase. This exception to the catchphrase extends to why unlike with Windows, MacOS users need to manually install Eclipse for Java followed by the CDT extension.