diff options
| -rw-r--r-- | apps/eq.c | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -130,8 +130,8 @@ static long dbtoA(long db) } /* Calculate second order section peaking filter coefficients. - cutoff is a value from 0 to 0xffffffff, where 0 represents 0 hz and - 0xffffffff represents nyquist (samplerate/2). + cutoff is a value from 0 to 0x80000000, where 0 represents 0 hz and + 0x80000000 represents nyquist (samplerate/2). Q is an unsigned 16.16 fixed point number, lower bound is artificially set at 0.5. db is s15.16 fixed point and describes gain/attenuation at peak freq. |