dynamics-compressor-node-post-knee.html

<!DOCTYPE html>
<html>
  <head>
    <title>
      Test performance of 100 DynamicsCompressorNodes (post-knee).
    </title>
    <script src="../resources/runner.js"></script>
    <script src="resources/webaudio-perf-utils.js"></script>
  </head>
  <body>
    <script>
      function graphBuilder() {
        const context = new OfflineAudioContext(1, 48000, 48000);
        // Use very large offset to ensure we are post-knee
        const source = new ConstantSourceNode(context, {offset: 100});
        const testNodes = createNodes(
	    context, 'DynamicsCompressorNode', 100,
            {attack: .003, knee: 30, ratio: 12, release: .25, threshold: -24});
        for (let i = 0; i < testNodes.length; ++i) {
          source.connect(testNodes[i]);
          testNodes[i].connect(context.destination);
        }
        source.start();
        return context;
      }

      RunWebAudioPerfTest({
        description: 'Test performance of 100 DynamicsCompressorNodes',
        graphBuilder: graphBuilder,
        tracingOptions: {
          targetCategory: 'disabled-by-default-webaudio.audionode',
          targetEvents: ['DynamicsCompressorHandler::Process'],
        }
      });
    </script>
  </body>
</html>
chromium/third_party/blink/perf_tests/webaudio/dynamics-compressor-node-post-knee.html
