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Use a -40dB drop for bsinc12

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This improves the transition width at the cost of slightly more audible high-
frequency noise (nothing compared to linear or cubic, but still some). The
previous transition band caused a noticeable loss in higher frequencies, making
lower sample rate sources sound exceptionally dull or muffled.
This commit is contained in:
Chris Robinson 2018-01-07 06:43:35 -08:00
parent c423b6c8b7
commit d8258984b4
1 changed files with 2 additions and 2 deletions
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4
native-tools/bsincgen.c
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@ -356,8 +356,8 @@ int main(int argc, char *argv[])
"} BSincTable;\n\n", BSINC_SCALE_COUNT, BSINC_PHASE_COUNT, FRACTIONONE);
/* A 23rd order filter with a -60dB drop at nyquist. */
BsiGenerateTables(output, "bsinc24", 60.0, 23);
/* An 11th order filter with a -60dB drop at nyquist. */
BsiGenerateTables(output, "bsinc12", 60.0, 11);
/* An 11th order filter with a -40dB drop at nyquist. */
BsiGenerateTables(output, "bsinc12", 40.0, 11);
if(output != stdout)
fclose(output);