teensy-audio-tuner/examples/Simple_Sine/coeff.h

int16_t fir_44117_HZ_coefficients[22] =
{
    0, 3, 6, -11, -71, 21,
    352, -15, -1202, -6, 5011, 8209,
    5011, -6, -1202, -15, 352, 21,
    -71, -11, 6, 3
};

int16_t fir_22059_HZ_coefficients[20] =
{
    0, 1, -6, -54, 18, 326,
    -14, -1178, -6, 5001, 8209, 5001,
    -6, -1178, -14, 326, 18, -54,
    -6, 1
};

int16_t fir_11029_HZ_coefficients[22] =
{
    0, 3, 6, -11, -71, 21,
    352, -15, -1202, -6, 5011, 8209,
    5011, -6, -1202, -15, 352, 21,
    -71, -11, 6, 3
};

int16_t fir_5515_HZ_coefficients[20] =
{
    0, 6, 4, -94, -2, 409,
    -11, -1267, 23, 5040, 8164, 5040,
    23, -1267, -11, 409, -2, -94,
    4, 6
};