Audio files are not decoded in Phaser

[shohan4556]

Hello everybody, in my game I have 4 types of audio file (mp3,mp4,wav and ogg) of same sound but my files is not decoded properly I have tried this 

this.load.audio('jumpSound',['sounds/jump.wav','sounds/jump.ogg','sounds/jump.mp3','sounds/jump.m4a'],true);

when I have tried this 

console.log(this.cache.isSoundDecoded('jumpSound'));

it gives me false but inside cache it showing this .

 my browser is chrome.