diff --git a/Wav-viewer.md b/Wav-viewer.md
index c3ee75b..2edf25d 100644
--- a/Wav-viewer.md
+++ b/Wav-viewer.md
@@ -1,5 +1,5 @@
 # Wav Viewer
-The Wav Viewer app can be used to view and play back 8-bit or 16-bit 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 also 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`
+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`
 
 
 ![SCR_0069](https://github.com/portapack-mayhem/mayhem-firmware/assets/129641948/7ed6853e-909b-4aff-80a0-c7f7c7dbe106)