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| 1 <!DOCTYPE html> | 1 <!DOCTYPE html> |
| 2 <html> |
| 3 <head> |
| 4 <title> |
| 5 convolution-mono-mono.html |
| 6 </title> |
| 7 <script src="../../resources/testharness.js"></script> |
| 8 <script src="../../resources/testharnessreport.js"></script> |
| 9 <script src="../resources/audit-util.js"></script> |
| 10 <script src="../resources/audit.js"></script> |
| 11 <script src="../resources/convolution-testing.js"></script> |
| 12 </head> |
| 13 <body> |
| 14 <script id="layout-test-code"> |
| 15 let audit = Audit.createTaskRunner(); |
| 2 | 16 |
| 3 <html> | 17 // description("Tests ConvolverNode processing a mono channel with mono |
| 4 <head> | 18 // impulse response."); |
| 5 <script src="../../resources/testharness.js"></script> | |
| 6 <script src="../../resources/testharnessreport.js"></script> | |
| 7 <script src="../resources/audit-util.js"></script> | |
| 8 <script src="../resources/audit.js"></script> | |
| 9 <script src="../resources/convolution-testing.js"></script> | |
| 10 </head> | |
| 11 | 19 |
| 12 <body> | 20 // To test the convolver, we convolve two square pulses together to |
| 13 <script> | 21 // produce a triangular pulse. To verify the result is correct we |
| 14 let audit = Audit.createTaskRunner(); | 22 // check several parts of the result. First, we make sure the initial |
| 23 // part of the result is zero (due to the latency in the convolver). |
| 24 // Next, the triangular pulse should match the theoretical result to |
| 25 // within some roundoff. After the triangular pulse, the result |
| 26 // should be exactly zero, but round-off prevents that. We make sure |
| 27 // the part after the pulse is sufficiently close to zero. Finally, |
| 28 // the result should be exactly zero because the inputs are exactly |
| 29 // zero. |
| 30 audit.define('test', function(task, should) { |
| 31 // Create offline audio context. |
| 32 let context = new OfflineAudioContext( |
| 33 2, sampleRate * renderLengthSeconds, sampleRate); |
| 15 | 34 |
| 16 //description("Tests ConvolverNode processing a mono channel with mono impulse r
esponse."); | 35 let squarePulse = createSquarePulseBuffer(context, pulseLengthFrames); |
| 36 let trianglePulse = |
| 37 createTrianglePulseBuffer(context, 2 * pulseLengthFrames); |
| 17 | 38 |
| 18 // To test the convolver, we convolve two square pulses together to | 39 let bufferSource = context.createBufferSource(); |
| 19 // produce a triangular pulse. To verify the result is correct we | 40 bufferSource.buffer = squarePulse; |
| 20 // check several parts of the result. First, we make sure the initial | |
| 21 // part of the result is zero (due to the latency in the convolver). | |
| 22 // Next, the triangular pulse should match the theoretical result to | |
| 23 // within some roundoff. After the triangular pulse, the result | |
| 24 // should be exactly zero, but round-off prevents that. We make sure | |
| 25 // the part after the pulse is sufficiently close to zero. Finally, | |
| 26 // the result should be exactly zero because the inputs are exactly | |
| 27 // zero. | |
| 28 audit.define("test", function (task, should) { | |
| 29 // Create offline audio context. | |
| 30 var context = new OfflineAudioContext(2, sampleRate * renderLengthSeconds, s
ampleRate); | |
| 31 | 41 |
| 32 var squarePulse = createSquarePulseBuffer(context, pulseLengthFrames); | 42 let convolver = context.createConvolver(); |
| 33 var trianglePulse = createTrianglePulseBuffer(context, 2 * pulseLengthFrames
); | 43 convolver.normalize = false; |
| 34 | 44 convolver.buffer = squarePulse; |
| 35 var bufferSource = context.createBufferSource(); | |
| 36 bufferSource.buffer = squarePulse; | |
| 37 | |
| 38 var convolver = context.createConvolver(); | |
| 39 convolver.normalize = false; | |
| 40 convolver.buffer = squarePulse; | |
| 41 | 45 |
| 42 bufferSource.connect(convolver); | 46 bufferSource.connect(convolver); |
| 43 convolver.connect(context.destination); | 47 convolver.connect(context.destination); |
| 44 | 48 |
| 45 bufferSource.start(0); | 49 bufferSource.start(0); |
| 46 | |
| 47 context.startRendering() | |
| 48 .then(buffer => { | |
| 49 checkConvolvedResult(buffer, trianglePulse, should); | |
| 50 }) | |
| 51 .then(task.done.bind(task));; | |
| 52 }); | |
| 53 | 50 |
| 54 audit.run(); | 51 context.startRendering() |
| 55 </script> | 52 .then(buffer => { |
| 53 checkConvolvedResult(buffer, trianglePulse, should); |
| 54 }) |
| 55 .then(task.done.bind(task)); |
| 56 ; |
| 57 }); |
| 56 | 58 |
| 57 </body> | 59 audit.run(); |
| 60 </script> |
| 61 </body> |
| 58 </html> | 62 </html> |
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Chromium Code Reviews
Issue 2895963003:
Apply layout-test-tidy to LayoutTests/webaudio (Closed)
