Hi! In my survey I ask participants to rate several sounds on a scale using a slider. But I want that the slider (and in the best case also the next button) only appears after the sound has been played back for ~1.5 sec. Is there a way to do it?

For the play button I use the following code:
Please play back the sound and rate it according to the scale:
<audio id="myAudio1">
<source src="https://MyURL"
type='audio/wav'>
</audio>
<button onclick="aud_play_pause1()" type="button">PLAY</button>
<script>
function aud_play_pause1() {
var myAudio1 = document.getElementById("myAudio1");
if (myAudio1.paused) {
myAudio1.play();
} else {
myAudio1.pause();
myAudio1.currentTime = 0;
}
}
</script>
So the condition should be like <if myAudio1.currentTime == 1.5>. Sorry, I am not familiar with JavaScript.
Thanks in advance for your help!