wav video file format :
The format for storing sound in files developed jointly by Microsoft and IBM. Support for WAV files was built into Windows 95 making it the de facto standard for sound on PCs. WAV sound files end with a.wav extension and can be played by nearly all Windows applications that support sound.
Best way to cut/trim/split wav file :
GiliSoft Video Editor — Cut/trim/split wav file.
1) Launch GiliSoft Video Editor
Once installed GiliSoft Video Editor, Launch GiliSoft Video Editor.
2) Select one way to cut wav file
There are 3 ways to cut wav file in the easy video editing software:
a) Easy Video/Audio Cutter - Cut one wav file to several small wav clips.
b) Batch
Video/Audio Cutter - Cut wanted wav clips from a lot of wav files.
c) Advanced Video/Audio Cutter - Cut wanted wav clip after video editing(added watermark,subtile...)
3) Load File
Click 'Add File(s)' button, Select "'WAV - Audio for Windows(*.wav)" in its "Files of type" combo box.
Add your wav file, GiliSoft Video Editor will preview your wav file directly.
4) Select Start time, and End time.
5) Click 'Start' button to start to cut your wav file.
GiliSoft Video Editor is very powerful wav Splitter and wav Cutter, split wav, cut wav without re-encode, So It is very fast and without any quality loss.