The larger the .WAV file will be. Stereo format makes larger .WAV files then Mono format. When converting a .WAV, you cannot improve quality by making it more Hz. When converting a .WAV, you cannot improve quality by making it more Bites. When converting a .WAV, you cannot improve quality by changing Mono format to Stereo format.
Microphones can ONLY record in Mono format.
DOES NOT improve quality. In fact, it has to 'make up' more bits and therefore, can 'ruin' a sound file. I would recommend that you test the changed format before you destroy or delete the original sound file. I typically use the above attributes as described in step by step directions rather then spend the time on each individual wav. Across the board this seems to be closest average to all wav formats.