Convert ADPCM WAV to MP3
If your recording device records ADPCM .WAVs then you will know that you can’t open these files in sound editors like Audacity. If you search online you will find that most conversion applications like CDex don’t support this format either. I couldn’t find any free or open source program to convert this type of file until I opened it in Windows Sound Recorder. Windows Sound Recorder which comes with Windows is able to convert ADPCM to MP3. First open the file and then choose File > Properties.