Is WAV needed for html5 audio fully cross-browser? -

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an audio web cross-browser needs different formats work on browsers. commonly see people use mp4 , ogg. want sure. therefore added webm , wav. needed? wav files heavy. question should thought thinking performance responsive site.

this html example:

<audio controls="controls" data-music="1">     <source src="http://example.webm" type="audio/webm" />     <source src="http://example.mp4" type="audio/mpeg" />     <source src="http://example.ogg" type="audio/ogg" />     <source src="http://example.wav" type="audio/wav" /> </audio>

will downloaded , affect global performance?

additionally, order matter of type of formats?


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