| Index: third_party/WebKit/LayoutTests/webaudio/BiquadFilter/tail-time-peaking.html
|
| diff --git a/third_party/WebKit/LayoutTests/webaudio/BiquadFilter/tail-time-peaking.html b/third_party/WebKit/LayoutTests/webaudio/BiquadFilter/tail-time-peaking.html
|
| deleted file mode 100644
|
| index 973d83617d2d114df50b80a55358a539296322a0..0000000000000000000000000000000000000000
|
| --- a/third_party/WebKit/LayoutTests/webaudio/BiquadFilter/tail-time-peaking.html
|
| +++ /dev/null
|
| @@ -1,115 +0,0 @@
|
| -<!doctype html>
|
| -<html>
|
| - <head>
|
| - <title>Test Biquad Tail-Time</title>
|
| - <script src="../../resources/testharness.js"></script>
|
| - <script src="../../resources/testharnessreport.js"></script>
|
| - <script src="../resources/audit-util.js"></script>
|
| - <script src="../resources/audit.js"></script>
|
| - <script src="../resources/biquad-filters.js"></script>
|
| - <script src="test-tail-time.js"></script>
|
| - </head>
|
| -
|
| - <body>
|
| - <script>
|
| - let audit = Audit.createTaskRunner();
|
| -
|
| - let sampleRate = 16384;
|
| - let renderSeconds = 1;
|
| - let renderFrames = renderSeconds * sampleRate;
|
| -
|
| - // For a peaking filter:
|
| - // b0 = 1 - alpha*A
|
| - // b1 = -2*cos(w0)
|
| - // b2 = 1 + alpha*A
|
| - // a0 = 1 + alpha/A
|
| - // a1 = -2*cos(w0)
|
| - // a2 = 1 - alpha/A
|
| - //
|
| - // where alpha = sin(w0)/(2*Q), w0 = 2*%pi*f0/Fs, and A = 10^(G/40)
|
| - //
|
| - // Equivalently a1 = -2*cos(w0)/(1+alpha/A), a2 = (1-alpha/A)/(1+alpha/A).
|
| - // The poles of this filter are at
|
| - //
|
| - // A*cos(w0)/(A + alpha) +/- sqrt(alpha^2-A^2*sin(w0)^2)/(A + alpha)
|
| - //
|
| - // But alpha^2-A^2*sin(w0)^2 = sin(w0)^2*(1/4/Q^2-1).
|
| - // Thus, the poles are complex if 1/(4*Q^2) < A^2; real and distinct if
|
| - // 1/(4*Q^2)>A^2; and repeated if 1/(4*Q^2) = A^2 or w0 = 0.
|
| -
|
| - // Array of tests to run. |descripton| is the task description for
|
| - // audit.define. |parameters| is option for |testTailTime|.
|
| - let tests = [
|
| - {
|
| - descripton:
|
| - {label: 'peaking-complex-roots', description: 'complex roots'},
|
| - parameters: {
|
| - prefix: 'Peaking complex roots',
|
| - // A gain of 40 gives A = 10.
|
| - filterOptions:
|
| - {type: 'peaking', Q: 10, gain: 40, frequency: sampleRate / 4},
|
| - // Node computed tail frame is 2077.4 frames, which matches the
|
| - // actual tail, so tail output should be exactly zero.
|
| - threshold: 0
|
| - }
|
| - },
|
| - {
|
| - descripton: {
|
| - label: 'peaking-real-distinct-roots',
|
| - description: 'real distinct roots'
|
| - },
|
| - parameters: {
|
| - prefix: 'Peaking real distinct roots',
|
| - filterOptions: {
|
| - type: 'peaking',
|
| - Q: 0.001,
|
| - gain: 40,
|
| - frequency: sampleRate / 4
|
| - },
|
| - // Node computed tail frame is 588 frames, which matches the actual
|
| - // tail, so tail output should be exactly zero.
|
| - threshold: 0
|
| - }
|
| - },
|
| - {
|
| - descripton: {
|
| - label: 'peaking-repeated-roots',
|
| - description: 'repeated real root'
|
| - },
|
| - parameters: {
|
| - prefix: 'Peaking repeated roots',
|
| - filterOptions:
|
| - {type: 'peaking', Q: 1 / 2, gain: 0, frequency: sampleRate / 8},
|
| - // Node computed tail frame is 0 frames, which matches the actual
|
| - // tail, so tail output should be exactly zero.
|
| - threshold: 0
|
| -
|
| - }
|
| - },
|
| - {
|
| - descripton: {
|
| - label: 'peaking-repeated-roots 2',
|
| - description: 'repeated real root'
|
| - },
|
| - parameters: {
|
| - prefix: 'Peaking repeated roots 2',
|
| - filterOptions: {type: 'peaking', Q: 1, gain: 40, frequency: 0},
|
| - // Node computed tail frame is 1 frames, which matches the actual
|
| - // tail, so tail output should be exactly zero.
|
| - threshold: 0
|
| - }
|
| - }
|
| - ];
|
| -
|
| - // Define an appropriate task for each test.
|
| - tests.forEach(entry => {
|
| - audit.define(entry.descripton, (task, should) => {
|
| - let context = new OfflineAudioContext(1, renderFrames, sampleRate);
|
| - testTailTime(should, context, entry.parameters).then(() => task.done());
|
| - });
|
| - });
|
| -
|
| - audit.run();
|
| - </script>
|
| - </body>
|
| -</html>
|
|
|
Chromium Code Reviews
Issue 2919503002:
Revert of Compute tail time from Biquad coefficients (Closed)
