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1 <!doctype html> | 1 <!doctype html> |
2 <html> | 2 <html> |
3 <head> | 3 <head> |
4 <script src="../../resources/testharness.js"></script> | 4 <script src="../../resources/testharness.js"></script> |
5 <script src="../../resources/testharnessreport.js"></script> | 5 <script src="../../resources/testharnessreport.js"></script> |
6 <script src="../resources/audit-util.js"></script> | 6 <script src="../resources/audit-util.js"></script> |
7 <script src="../resources/audit.js"></script> | 7 <script src="../resources/audit.js"></script> |
8 <script src="../resources/realtimeanalyser-testing.js"></script> | 8 <script src="../resources/realtimeanalyser-testing.js"></script> |
9 <script src="../resources/fft.js"></script> | 9 <script src="../resources/fft.js"></script> |
10 <title>Test Analyser getFloatFrequencyData and getByteFrequencyData, No Smoo thing</title> | 10 <title>Test Analyser getFloatFrequencyData and getByteFrequencyData, No Smoo thing</title> |
11 </head> | 11 </head> |
12 | 12 |
13 <body> | 13 <body> |
14 <script> | 14 <script> |
15 // Use a power of two to eliminate any round-off in the computation of the times for | 15 // Use a power of two to eliminate any round-off in the computation of the times for |
16 // context.suspend(). | 16 // context.suspend(). |
17 var sampleRate = 32768; | 17 let sampleRate = 32768; |
18 | 18 |
19 // The largest FFT size for the analyser node is 32768. We want to render longer than this so | 19 // The largest FFT size for the analyser node is 32768. We want to render longer than this so |
20 // that we have at least one complete buffer of data of 32768 samples. | 20 // that we have at least one complete buffer of data of 32768 samples. |
21 var renderFrames = 2 * 32768; | 21 let renderFrames = 2 * 32768; |
22 var renderDuration = renderFrames / sampleRate; | 22 let renderDuration = renderFrames / sampleRate; |
23 | 23 |
24 var audit = Audit.createTaskRunner(); | 24 let audit = Audit.createTaskRunner(); |
25 | 25 |
26 // Options for basic tests of the AnalyserNode frequency domain data. The thresholds are | 26 // Options for basic tests of the AnalyserNode frequency domain data. The thresholds are |
27 // experimentally determined. | 27 // experimentally determined. |
28 var testConfig = [{ | 28 let testConfig = [{ |
29 order: 5, | 29 order: 5, |
30 // For this order, need to specify a higher minDecibels value for the an alyser because the | 30 // For this order, need to specify a higher minDecibels value for the an alyser because the |
31 // FFT doesn't get that small. This allows us to test that (a changed) m inDecibels has an | 31 // FFT doesn't get that small. This allows us to test that (a changed) m inDecibels has an |
32 // effect and that we properly clip the byte data. | 32 // effect and that we properly clip the byte data. |
33 minDecibels: -50, | 33 minDecibels: -50, |
34 floatRelError: 9.6549e-7, | 34 floatRelError: 9.6549e-7, |
35 }, { | 35 }, { |
36 order: 6, | 36 order: 6, |
37 floatRelError: 6.8366e-6 | 37 floatRelError: 6.8366e-6 |
38 }, { | 38 }, { |
(...skipping 19 matching lines...) Expand all Loading... | |
58 floatRelError: 3.2106e-7 | 58 floatRelError: 3.2106e-7 |
59 }, { | 59 }, { |
60 order: 14, | 60 order: 14, |
61 floatRelError: 1.1756e-7 | 61 floatRelError: 1.1756e-7 |
62 }, { | 62 }, { |
63 order: 15, | 63 order: 15, |
64 floatRelError: 1.1756e-7 | 64 floatRelError: 1.1756e-7 |
65 }]; | 65 }]; |
66 | 66 |
67 // True if all of the basic tests passed. | 67 // True if all of the basic tests passed. |
68 var basicTestsPassed = true; | 68 let basicTestsPassed = true; |
69 | 69 |
70 // Generate tests for each entry in testConfig. | 70 // Generate tests for each entry in testConfig. |
71 for (var k = 0; k < testConfig.length; ++k) { | 71 for (let k = 0; k < testConfig.length; ++k) { |
72 var name = testConfig[k].order + "-order FFT"; | 72 let name = testConfig[k].order + "-order FFT"; |
73 (function (config) { | 73 (function (config) { |
74 audit.define(name, (task, should) => { | 74 audit.define(name, (task, should) => { |
75 basicFFTTest(should, config).then(() => task.done()); | 75 basicFFTTest(should, config).then(() => task.done()); |
76 }); | 76 }); |
77 })(testConfig[k]); | 77 })(testConfig[k]); |
78 } | 78 } |
79 | 79 |
80 // Test that smoothing isn't done and we have the expected data, calling g etFloatFrequencyData | 80 // Test that smoothing isn't done and we have the expected data, calling g etFloatFrequencyData |
81 // twice at different times. | 81 // twice at different times. |
82 audit.define("no smoothing", (task, should) => { | 82 audit.define("no smoothing", (task, should) => { |
83 // Use 128-point FFT for the test. The actual order doesn't matter (but the error threshold | 83 // Use 128-point FFT for the test. The actual order doesn't matter (but the error threshold |
84 // depends on the order). | 84 // depends on the order). |
85 var options = { | 85 let options = { |
86 order: 7, | 86 order: 7, |
87 smoothing: 0, | 87 smoothing: 0, |
88 floatRelError: 1.2548e-6 | 88 floatRelError: 1.2548e-6 |
89 }; | 89 }; |
90 var graph = createGraph(options); | 90 let graph = createGraph(options); |
91 var context = graph.context; | 91 let context = graph.context; |
92 var analyser = graph.analyser; | 92 let analyser = graph.analyser; |
93 | 93 |
94 // Be sure to suspend after the analyser fftSize so we get a full buffer of data. We will | 94 // Be sure to suspend after the analyser fftSize so we get a full buffer of data. We will |
95 // grab the FFT data to prime the pump for smoothing. We don't need to check the results | 95 // grab the FFT data to prime the pump for smoothing. We don't need to check the results |
96 // (because this is tested above in the basicFFTTests). | 96 // (because this is tested above in the basicFFTTests). |
97 var suspendFrame = Math.max(128, analyser.fftSize); | 97 let suspendFrame = Math.max(128, analyser.fftSize); |
98 context.suspend(suspendFrame / sampleRate).then(function () { | 98 context.suspend(suspendFrame / sampleRate).then(function () { |
99 // Grab the time and frequency data. But we don't care what values we get now; we just | 99 // Grab the time and frequency data. But we don't care what values we get now; we just |
100 // want to prime the analyser. | 100 // want to prime the analyser. |
101 var freqData = new Float32Array(analyser.frequencyBinCount); | 101 let freqData = new Float32Array(analyser.frequencyBinCount); |
102 | 102 |
103 // Grab the frequency domain data | 103 // Grab the frequency domain data |
104 analyser.getFloatFrequencyData(freqData); | 104 analyser.getFloatFrequencyData(freqData); |
105 }).then(context.resume.bind(context)); | 105 }).then(context.resume.bind(context)); |
106 | 106 |
107 // Grab another set of data after one rendering quantum. We will test t his to make sure | 107 // Grab another set of data after one rendering quantum. We will test t his to make sure |
108 // smoothing was not done. | 108 // smoothing was not done. |
109 suspendFrame += 128; | 109 suspendFrame += 128; |
110 context.suspend(suspendFrame / sampleRate).then(function () { | 110 context.suspend(suspendFrame / sampleRate).then(function () { |
111 var timeData = new Float32Array(analyser.fftSize); | 111 let timeData = new Float32Array(analyser.fftSize); |
112 var freqData = new Float32Array(analyser.frequencyBinCount); | 112 let freqData = new Float32Array(analyser.frequencyBinCount); |
113 | 113 |
114 // Grab the time domain and frequency domain data | 114 // Grab the time domain and frequency domain data |
115 analyser.getFloatTimeDomainData(timeData); | 115 analyser.getFloatTimeDomainData(timeData); |
116 analyser.getFloatFrequencyData(freqData); | 116 analyser.getFloatFrequencyData(freqData); |
117 | 117 |
118 var expected = computeFFTMagnitude(timeData, options.order).map(linear ToDb); | 118 let expected = computeFFTMagnitude(timeData, options.order).map(linear ToDb); |
119 var comparison = compareFloatFreq(Math.pow(2, options.order) + "-point float FFT", | 119 let comparison = compareFloatFreq(Math.pow(2, options.order) + "-point float FFT", |
120 freqData, expected, should, options); | 120 freqData, expected, should, options); |
121 basicTestsPassed = basicTestsPassed && comparison.success; | 121 basicTestsPassed = basicTestsPassed && comparison.success; |
122 }).then(context.resume.bind(context)); | 122 }).then(context.resume.bind(context)); |
123 | 123 |
124 context.startRendering().then(() => task.done()); | 124 context.startRendering().then(() => task.done()); |
125 }); | 125 }); |
126 | 126 |
127 audit.run(); | 127 audit.run(); |
128 | 128 |
129 // Run a simple test of the AnalyserNode's frequency domain data. Both th e float and byte | 129 // Run a simple test of the AnalyserNode's frequency domain data. Both th e float and byte |
130 // frequency data are tested. The byte tests depend on the float tests be ing correct. | 130 // frequency data are tested. The byte tests depend on the float tests be ing correct. |
131 // | 131 // |
132 // The parameters of the test are given by |options| which is a property b ag consisting of the | 132 // The parameters of the test are given by |options| which is a property b ag consisting of the |
133 // following: | 133 // following: |
134 // | 134 // |
135 // order: Order of the FFT to test. | 135 // order: Order of the FFT to test. |
136 // smoothing: smoothing time constant for the analyser. | 136 // smoothing: smoothing time constant for the analyser. |
137 // minDecibels: min decibels value for the analyser. | 137 // minDecibels: min decibels value for the analyser. |
138 // floatRelError: max allowed relative error for the float FFT data | 138 // floatRelError: max allowed relative error for the float FFT data |
139 function basicFFTTest(should, options) { | 139 function basicFFTTest(should, options) { |
140 var graph = createGraph(options); | 140 let graph = createGraph(options); |
141 var context = graph.context; | 141 let context = graph.context; |
142 var analyser = graph.analyser; | 142 let analyser = graph.analyser; |
143 | 143 |
144 var suspendTime = Math.max(128, analyser.fftSize) / sampleRate; | 144 let suspendTime = Math.max(128, analyser.fftSize) / sampleRate; |
145 context.suspend(suspendTime).then(function () { | 145 context.suspend(suspendTime).then(function () { |
146 var timeData = new Float32Array(analyser.fftSize); | 146 let timeData = new Float32Array(analyser.fftSize); |
147 var freqData = new Float32Array(analyser.frequencyBinCount); | 147 let freqData = new Float32Array(analyser.frequencyBinCount); |
148 | 148 |
149 // Grab the time domain and frequency domain data | 149 // Grab the time domain and frequency domain data |
150 analyser.getFloatTimeDomainData(timeData); | 150 analyser.getFloatTimeDomainData(timeData); |
151 analyser.getFloatFrequencyData(freqData); | 151 analyser.getFloatFrequencyData(freqData); |
152 | 152 |
153 var expected = computeFFTMagnitude(timeData, options.order).map(linear ToDb); | 153 let expected = computeFFTMagnitude(timeData, options.order).map(linear ToDb); |
154 var comparison = compareFloatFreq(Math.pow(2, options.order) + "-point float FFT", | 154 let comparison = compareFloatFreq(Math.pow(2, options.order) + "-point float FFT", |
155 freqData, expected, should, options); | 155 freqData, expected, should, options); |
156 basicTestsPassed = basicTestsPassed && comparison.success; | 156 basicTestsPassed = basicTestsPassed && comparison.success; |
157 var expected = comparison.expected; | 157 expected = comparison.expected; |
Raymond Toy
2017/05/19 13:53:37
So the real change here is the double declaration
hongchan
2017/05/19 16:15:29
Yes.
| |
158 | 158 |
159 // For the byte test to be better, check that there are some samples t hat are outside the | 159 // For the byte test to be better, check that there are some samples t hat are outside the |
160 // range of minDecibels and maxDecibels. If there aren't the test sho uld update the | 160 // range of minDecibels and maxDecibels. If there aren't the test sho uld update the |
161 // minDecibels and maxDecibels values for the analyser. | 161 // minDecibels and maxDecibels values for the analyser. |
162 | 162 |
163 var minValue = Math.min(...expected); | 163 let minValue = Math.min(...expected); |
164 var maxValue = Math.max(...expected); | 164 let maxValue = Math.max(...expected); |
165 | 165 |
166 should(minValue, "Order: " + options.order + | 166 should(minValue, "Order: " + options.order + |
167 ": Min FFT value") | 167 ": Min FFT value") |
168 .beLessThanOrEqualTo(analyser.minDecibels); | 168 .beLessThanOrEqualTo(analyser.minDecibels); |
169 should(maxValue, "Order: " + options.order + | 169 should(maxValue, "Order: " + options.order + |
170 ": Max FFT value") | 170 ": Max FFT value") |
171 .beGreaterThanOrEqualTo(analyser.maxDecibels); | 171 .beGreaterThanOrEqualTo(analyser.maxDecibels); |
172 // Test the byte frequency data. | 172 // Test the byte frequency data. |
173 var byteFreqData = new Uint8Array(analyser.frequencyBinCount); | 173 let byteFreqData = new Uint8Array(analyser.frequencyBinCount); |
174 var expectedByteData = new Float32Array(analyser.frequencyBinCount); | |
hongchan
2017/05/19 16:15:29
Also this does not need the declaration.
| |
175 analyser.getByteFrequencyData(byteFreqData); | 174 analyser.getByteFrequencyData(byteFreqData); |
176 | 175 |
177 // Convert the expected float frequency data to byte data. | 176 // Convert the expected float frequency data to byte data. |
178 var expectedByteData = convertFloatToByte(expected, analyser.minDecibe ls, | 177 let expectedByteData = convertFloatToByte(expected, analyser.minDecibe ls, |
179 analyser.maxDecibels); | 178 analyser.maxDecibels); |
180 | 179 |
181 should(byteFreqData, analyser.fftSize + "-point byte FFT") | 180 should(byteFreqData, analyser.fftSize + "-point byte FFT") |
182 .beCloseToArray(expectedByteData, 0); | 181 .beCloseToArray(expectedByteData, 0); |
183 | 182 |
184 }).then(context.resume.bind(context)); | 183 }).then(context.resume.bind(context)); |
185 | 184 |
186 return context.startRendering(); | 185 return context.startRendering(); |
187 } | 186 } |
188 </script> | 187 </script> |
189 </body> | 188 </body> |
190 </html> | 189 </html> |
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