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1 | srecord noeq AudioHaarFeature(IAudioSample sample, double start, double end) {
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2 | double factor = 1; |
3 | bool alternatePhase; // sample 90° phase shift? |
4 | |
5 | *(IAudioSample *sample, DoubleRange r) {
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6 | start = r.start; |
7 | end = r.end; |
8 | } |
9 | |
10 | double mid() { ret (start+end)/2; }
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11 | |
12 | double get(int channel) {
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13 | double value; |
14 | if (alternatePhase) {
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15 | double |
16 | quarter = start+(end-start)*.25, |
17 | threeQuarters = start+(end-start)*.75; |
18 | |
19 | value = |
20 | sample.sampleSum(channel, start, end) |
21 | - sample.sampleSum(channel, quarter, threeQuarters)*2; |
22 | } else {
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23 | double mid = mid(); |
24 | value = sample.sampleSum(channel, start, mid) |
25 | - sample.sampleSum(channel, mid, end); |
26 | } |
27 | ret mul_optFor1(factor, value); |
28 | } |
29 | |
30 | Channels<Double> get() {
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31 | ret mapChannels get(sample.channels()); |
32 | } |
33 | |
34 | Complex getComplex(int channel) {
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35 | alternatePhase = true; |
36 | double re = get(channel); |
37 | alternatePhase = false; |
38 | double im = get(channel); |
39 | ret complex(re, im); |
40 | } |
41 | |
42 | Channels<Complex> getComplex() {
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43 | ret mapChannels getComplex(sample.channels()); |
44 | } |
45 | } |
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| Snippet ID: | #1032988 |
| Snippet name: | AudioHaarFeature |
| Eternal ID of this version: | #1032988/11 |
| Text MD5: | dbf63746263405820a510e33ded6de1d |
| Transpilation MD5: | f1fbcbba9284551f34bdf318f1cde01a |
| Author: | stefan |
| Category: | javax |
| Type: | JavaX fragment (include) |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2021-10-18 03:13:20 |
| Source code size: | 1175 bytes / 45 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 203 / 362 |
| Version history: | 10 change(s) |
| Referenced in: | [show references] |