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Update calculator to handle goertzel

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cnlohr
2024-06-24 02:48:18 -07:00
parent 9f0cc2c50d
commit 2b75c51cd9
9 changed files with 171 additions and 96 deletions
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ch32v/ch32v203-goertzel/ttest/ttest.c
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@@ -13,6 +13,7 @@ int32_t g_goertzelp_store, g_goertzelp2_store;
int main()
{
//XXX XXX NOTE If you are computing the coefficients, you can plug the value in here.
// You can get this number from calculator.html. I've had better luck with "inverse goertzel" numbers.
g_goertzel_omega_per_sample = (47.0/256) * 3.1415926535*2.0*(1<<29);
g_goertzel_coefficient = 2 * cos( g_goertzel_omega_per_sample / (double)(1<<29) ) * (1<<30);
g_goertzel_coefficient_s = 2 * sin( g_goertzel_omega_per_sample / (double)(1<<29) ) * (1<<30);