javascript - Get sound frequency with web Audio API -


i real time frequency of sound not work. here code:

navigator.getusermedia({audio:true,video:false}, function (stream) { document.queryselector("#music").src = window.url.createobjecturl(stream) document.queryselector("#music").play() var contexteaudio = new (window.audiocontext || window.webkitaudiocontext)(); var analyseur = contexteaudio.createanalyser(); source = contexteaudio.createmediastreamsource(stream); source.connect(analyseur); var tab = new float32array();  (var i=0;i<=100;i++) {     var datas = analyseur.getfloatfrequencydata(tab);   document.queryselector("#datas").innerhtml = tab[i]; }  }, function(error) { console.log(error) })

you can test here: https://jsfiddle.net/2tzduxak/1/

why can't float value of real time frequency microphone based ? value undefined....


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