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cvonk/auto_correlation.cpp

Created May 9, 2022 22:36
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auto_correlation.cpp
static autoCorr_t
_auto_corr(samples_t const samples, samplesLag_t const lag)
{
autoCorr_t ac = 0;
for (sample_cnt_t ii = 0; ii < CONFIG_MIDIMIKE_WINDOW_SIZE - lag; ii++) {
ac += ((int16_t)samples[ii] * samples[ii + lag]);
}
return ac;
}
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