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dsp/window: use half offset to exclude flanking zeros

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This commit is contained in:
Dan Kortschak
2020-02-20 19:30:39 +10:30
committed by GitHub
parent 43ba13d1a9
commit efc4dabf2a
6 changed files with 245 additions and 320 deletions
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24
dsp/window/window_example_test.go
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@@ -67,16 +67,16 @@ func Example() {
// freq=0.4500 cycles/period, magnitude=0.0707, phase=-1.7279
// freq=0.5000 cycles/period, magnitude=0.0000, phase=0.0000
// Hamming window:
// freq=0.0000 cycles/period, magnitude=0.0218, phase=3.1416
// freq=0.0500 cycles/period, magnitude=0.8022, phase=-2.9845
// freq=0.1000 cycles/period, magnitude=7.1723, phase=0.3142
// freq=0.1500 cycles/period, magnitude=8.6285, phase=-2.6704
// freq=0.2000 cycles/period, magnitude=2.0420, phase=0.6283
// freq=0.2500 cycles/period, magnitude=0.0702, phase=0.7854
// freq=0.3000 cycles/period, magnitude=0.0217, phase=-2.1991
// freq=0.3500 cycles/period, magnitude=0.0259, phase=-2.0420
// freq=0.4000 cycles/period, magnitude=0.0184, phase=-1.8850
// freq=0.4500 cycles/period, magnitude=0.0092, phase=-1.7279
// freq=0.0000 cycles/period, magnitude=0.0506, phase=0.0000
// freq=0.0500 cycles/period, magnitude=0.5386, phase=-2.9845
// freq=0.1000 cycles/period, magnitude=7.3350, phase=0.3142
// freq=0.1500 cycles/period, magnitude=8.9523, phase=-2.6704
// freq=0.2000 cycles/period, magnitude=1.7979, phase=0.6283
// freq=0.2500 cycles/period, magnitude=0.0957, phase=0.7854
// freq=0.3000 cycles/period, magnitude=0.0050, phase=-2.1991
// freq=0.3500 cycles/period, magnitude=0.0158, phase=-2.0420
// freq=0.4000 cycles/period, magnitude=0.0125, phase=-1.8850
// freq=0.4500 cycles/period, magnitude=0.0065, phase=-1.7279
// freq=0.5000 cycles/period, magnitude=0.0000, phase=0.0000
}
@@ -100,6 +100,6 @@ func ExampleHamming() {
// Output:
//
// src: [1.000000 1.000000 1.000000 1.000000 1.000000 1.000000 1.000000 1.000000 1.000000 1.000000 1.000000 1.000000 1.000000 1.000000 1.000000 1.000000 1.000000 1.000000 1.000000 1.000000]
// srcCpy: [0.086957 0.111692 0.183218 0.293785 0.431409 0.581178 0.726861 0.852672 0.944977 0.993774 0.993774 0.944977 0.852672 0.726861 0.581178 0.431409 0.293785 0.183218 0.111692 0.086957]
// dst: [0.086957 0.111692 0.183218 0.293785 0.431409 0.581178 0.726861 0.852672 0.944977 0.993774 0.993774 0.944977 0.852672 0.726861 0.581178 0.431409 0.293785 0.183218 0.111692 0.086957]
// srcCpy: [0.092577 0.136714 0.220669 0.336222 0.472063 0.614894 0.750735 0.866288 0.950242 0.994379 0.994379 0.950242 0.866288 0.750735 0.614894 0.472063 0.336222 0.220669 0.136714 0.092577]
// dst: [0.092577 0.136714 0.220669 0.336222 0.472063 0.614894 0.750735 0.866288 0.950242 0.994379 0.994379 0.950242 0.866288 0.750735 0.614894 0.472063 0.336222 0.220669 0.136714 0.092577]
}