Wav viewer - portapack-mayhem/mayhem-firmware GitHub Wiki
Wav Viewer
The Wav Viewer app can be used to view and play back 8-bit unsigned or 16-bit signed mono WAV files. Sample WAV files may be found in the WAV folder of the SD card, and WAV files captured using the Audio app will be placed in the AUDIO folder of the SD card. Using a PC, WAV files can be created from an existing MP3 file using Audacity or ffmpeg, e.g. ffmpeg -i lovely_music.mp3 -ar 48000 -ac 1 -acodec pcm_u8 lovely_music.wav