<!DOCTYPE html> <html class="reftest-wait"> <script> const rate = 44101; // not divisible by 2 var context = new window.OfflineAudioContext(1, 512, rate); var buffer = context.createBuffer(1, 128, rate); buffer.getChannelData(0)[0] = 1.0; var source = context.createBufferSource(); source.buffer = buffer; source.playbackRate.value = rate / (Math.pow(2, 30) * 1.0000001); source.start(512 / rate); context.startRendering(). then(function() { document.documentElement.removeAttribute("class"); }); </script>