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do decimation by 7 using boxcar filter :)

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Ahmet Inan 2015-01-07 21:04:03 +01:00
parent e1b68b4e59
commit 0026a26897
1 changed files with 1 additions and 1 deletions
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2
app/src/main/rs/stft.rsh
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@ -44,7 +44,7 @@ static void spectrum_analyzer(float amplitude)
static complex_t input[radix2_N];
static complex_t output[radix2_N];
input[n&(radix2_N-1)] += complex(stft_w[n] * amplitude, 0.0f);
input[(n/7)&(radix2_N-1)] += complex(stft_w[n] * amplitude, 0.0f);
if (++n >= stft_N) {
n = 0;
// yep, were wasting 3x performance