在100
以下音频播放每分钟心跳和4/4
的时间签名。
秒和蜱正在不断成长记录中的数字。我怎么能确定:
1
发生..通常音乐进行计数1, 2, 3, 4, 1, 2, 3, 4
(function() {
var isPlaying = false;
document.getElementById('togglePlayback').addEventListener('click', function() {
isPlaying = !isPlaying;
Tone.Transport.bpm.value = 100;
Tone.Transport.timeSignature = "4/4";
console.log('Start playing');
console.log(Tone.Transport.bpm.value);
console.log(Tone.Transport.timeSignature);
if(isPlaying) {
Tone.Transport.scheduleRepeat(function(time){
console.log('Seconds: ' + Tone.Transport.getSecondsAtTime(time));
console.log('Ticks: ' + Tone.Transport.getTicksAtTime(time));
}, "4n");
Tone.Transport.start();
}
});
})();
<script src="https://cdnjs.cloudflare.com/ajax/libs/tone/13.7.1/Tone.js"></script>
<div>
<button id="togglePlayback">Start</button>
</div>
<div id="results"></div>
由于四分音符为192个蜱,你可以用它来确定其他事件和条件的时机:
(function() {
Tone.Transport.bpm.value = 100;
Tone.Transport.timeSignature = "4/4";
Tone.Transport.scheduleRepeat(function(time){
console.log('Quarter Notes:', Tone.Transport.getTicksAtTime(time) / 192);
}, "4n");
var isPlaying = false;
document.getElementById('togglePlayback').addEventListener('click', function() {
if (isPlaying) {
Tone.Transport.pause();
} else {
Tone.Transport.start();
}
isPlaying = !isPlaying;
});
})();
<script src="https://cdnjs.cloudflare.com/ajax/libs/tone/13.7.1/Tone.js"></script>
<div>
<button id="togglePlayback">Start</button>
</div>
<div id="results"></div>
我也已经修订你的逻辑,以播放/暂停,而不是新的调度重复并从回放的每第二次按下按钮开始启动。