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diff --git a/testing/web-platform/tests/webaudio/the-audio-api/the-audioparam-interface/k-rate-biquad.html b/testing/web-platform/tests/webaudio/the-audio-api/the-audioparam-interface/k-rate-biquad.html
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+++ b/testing/web-platform/tests/webaudio/the-audio-api/the-audioparam-interface/k-rate-biquad.html
@@ -0,0 +1,111 @@
+<!doctype html>
+<html>
+  <head>
+    <title>Test k-rate AudioParams of BiquadFilterNode</title>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/webaudio/resources/audit-util.js"></script>
+    <script src="/webaudio/resources/audit.js"></script>
+    <script src="automation-rate-testing.js"></script>
+  </head>
+
+  <body>
+    <script>
+      let audit = Audit.createTaskRunner();
+
+      audit.define(
+          {task: 'BiquadFilter-0', label: 'Biquad k-rate AudioParams (all)'},
+          (task, should) => {
+            // Arbitrary sample rate and duration.
+            let sampleRate = 8000;
+            let testDuration = 1;
+            let context = new OfflineAudioContext({
+              numberOfChannels: 3,
+              sampleRate: sampleRate,
+              length: testDuration * sampleRate
+            });
+
+            doTest(context, should, {
+              nodeName: 'BiquadFilterNode',
+              nodeOptions: {type: 'lowpass'},
+              prefix: 'All k-rate params',
+              // Set all AudioParams to k-rate
+              rateSettings: [
+                {name: 'Q', value: 'k-rate'},
+                {name: 'detune', value: 'k-rate'},
+                {name: 'frequency', value: 'k-rate'},
+                {name: 'gain', value: 'k-rate'},
+              ],
+              // Automate just the frequency
+              automations: [{
+                name: 'frequency',
+                methods: [
+                  {name: 'setValueAtTime', options: [350, 0]}, {
+                    name: 'linearRampToValueAtTime',
+                    options: [0, testDuration]
+                  }
+                ]
+              }]
+            }).then(() => task.done());
+          });
+
+      // Define a test where we verify that a k-rate audio param produces
+      // different results from an a-rate audio param for each of the audio
+      // params of a biquad.
+      //
+      // Each entry gives the name of the AudioParam, an initial value to be
+      // used with setValueAtTime, and a final value to be used with
+      // linearRampToValueAtTime. (See |doTest| for details as well.)
+
+      [{name: 'Q',
+        initial: 1,
+        final: 10
+       },
+       {name: 'detune',
+        initial: 0,
+        final: 1200
+       },
+       {name: 'frequency',
+        initial: 350,
+        final: 0
+       },
+       {name: 'gain',
+        initial: 10,
+        final: 0
+       }].forEach(paramProperty => {
+        audit.define('Biquad k-rate ' + paramProperty.name, (task, should) => {
+          // Arbitrary sample rate and duration.
+          let sampleRate = 8000;
+          let testDuration = 1;
+          let context = new OfflineAudioContext({
+            numberOfChannels: 3,
+            sampleRate: sampleRate,
+            length: testDuration * sampleRate
+          });
+
+          doTest(context, should, {
+            nodeName: 'BiquadFilterNode',
+            nodeOptions: {type: 'peaking', Q: 1, gain: 10},
+            prefix: `k-rate ${paramProperty.name}`,
+            // Just set the frequency to k-rate
+            rateSettings: [
+              {name: paramProperty.name, value: 'k-rate'},
+            ],
+            // Automate just the given AudioParam
+            automations: [{
+              name: paramProperty.name,
+              methods: [
+                {name: 'setValueAtTime', options: [paramProperty.initial, 0]}, {
+                  name: 'linearRampToValueAtTime',
+                  options: [paramProperty.final, testDuration]
+                }
+              ]
+            }]
+          }).then(() => task.done());
+        });
+      });
+
+      audit.run();
+    </script>
+  </body>
+</html>