CONVERTING MT AUDIO FILES TO WAV FORMAT UNDER WINDOWS Tested with Windows 7, 7/28/2016 Bill Burgess DOWNLOAD SOX 1. Go to https://sourceforge.net/projects/sox/files/sox/ 2. Near the top it says "Looking for the latest version? Download sox-xxxxx.exe" 3. Click on the link to download the executable sox installer. 4. Save the installer and run later, or run at download time, your choice. INSTALL SOX 5. When installing, the installer will offer components to install. 6. SoX is command-line only software; no need to install shortcuts or desktop icons. 7. IMPORTANT: Note where the installer is placing the software. It will be of the form c:\Program Files (x86)\sox-14-4-2\ ADD SOX TO DEFAULT COMMAND PATH 8. In "Start" menu, enter "Advanced System Settings" in "Search" text box 9. This should show you an option to "View advanced system settings". Click on it. 10. This in turn opens up a "System Properties" dialog. 11. Click on "Environment Variables" in the lower-right corner of the dialog. 12. Under "System variables" scroll to "Path", select it, and click "Edit..." 13. Position the text-entry cursor at the very end of the (long) line of text. 14. DO NOT REMOVE EXISTING TEXT! Instead, add a SEMICOLON and the SoX path to the end 15. The addition will be of the form: ;C:\Program Files (x86)\sox-14-4-2 16. Save, and restart Windows. PREPARING FOR EXECUTION 17. Copy or rename files you wish to convert to use the extension ".raw" instead of ".MT" 18. DO NOT DELETE THE ORIGINAL MT FILES. WAV conversion loses the MT metadata! 19. Open a command line using: Start Menu->All Programs->Accessories->Command Prompt 20. Use "cd" to change your working directory to the location of the ".raw" acoustic data EXECUTION 21. Type the sox command to convert a .raw file to .wav, stripping the 512-byte MT header: sox -r 25811 -e signed -b 16 -c 1 MTFILENAME.raw OUTPUTFILENAME.wav trim 256s In the above example, you may need to adjust: -- Sampling rate (25811 Hz above) -- Input file (MTFILENAME.raw above) -- Output file (OUTPUTFILENAME.wav above)