thanks i was able to create and play audio file with custom code.
for anyone who need this
init block
var sound = document.createElement('audio');
sound.id = 'audio-player';
document.body.appendChild(sound);
play block
var audio_sound = document.getElementById("audio-player");
audio_sound.src=sound; // this is an input to the block
audio_sound.play();
stop playing block
var audio_sound = document.getElementById("audio-player");
audio_sound.src='';