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1 | static double autocorrelationOfAudioSamples(short[] samples) {
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2 | ret autocorrelationOfAudioSamples(samples, 0, l(samples)); |
3 | } |
4 | |
5 | static double autocorrelationOfAudioSamples(short[] samples, int start, int end) {
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6 | int n = end-start; |
7 | double sum = 0; |
8 | for j to n: {
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9 | double correlation = 0; |
10 | for i to n: |
11 | correlation += sixteenBitAudioSampleToDouble(samples[start+i]) |
12 | * sixteenBitAudioSampleToDouble(samples[start+mod(i - j, n)]); |
13 | sum += correlation; |
14 | } |
15 | ret doubleRatio(sum, n); |
16 | } |
17 | |
18 | static double autocorrelationOfAudioSamples(short[] samples, IntRange r) {
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19 | ret autocorrelationOfAudioSamples(samples, r.start, r.end); |
20 | } |
Began life as a copy of #1026886
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| Snippet ID: | #1026895 |
| Snippet name: | autocorrelationOfAudioSamples |
| Eternal ID of this version: | #1026895/3 |
| Text MD5: | 835c0eab43df2569fac7ddc08a50e753 |
| Transpilation MD5: | 4dcd035579df933b6a6fbdd0301b95fa |
| Author: | stefan |
| Category: | javax / audio |
| Type: | JavaX fragment (include) |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2020-02-02 15:23:34 |
| Source code size: | 664 bytes / 20 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 220 / 301 |
| Version history: | 2 change(s) |
| Referenced in: | [show references] |