diff options
Diffstat (limited to 'src/emu/sound/filter.h')
-rw-r--r-- | src/emu/sound/filter.h | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/src/emu/sound/filter.h b/src/emu/sound/filter.h index cbfdf6b97fc..1b62676b563 100644 --- a/src/emu/sound/filter.h +++ b/src/emu/sound/filter.h @@ -57,18 +57,18 @@ filter_real filter_compute(filter* f, filter_state* s); /* Filter types */ -#define FILTER_LOWPASS 0 -#define FILTER_HIGHPASS 1 -#define FILTER_BANDPASS 2 +#define FILTER_LOWPASS 0 +#define FILTER_HIGHPASS 1 +#define FILTER_BANDPASS 2 -#define Q_TO_DAMP(q) (1.0/q) +#define Q_TO_DAMP(q) (1.0/q) struct filter2_context { - double x0, x1, x2; /* x[k], x[k-1], x[k-2], current and previous 2 input values */ - double y0, y1, y2; /* y[k], y[k-1], y[k-2], current and previous 2 output values */ - double a1, a2; /* digital filter coefficients, denominator */ - double b0, b1, b2; /* digital filter coefficients, numerator */ + double x0, x1, x2; /* x[k], x[k-1], x[k-2], current and previous 2 input values */ + double y0, y1, y2; /* y[k], y[k-1], y[k-2], current and previous 2 output values */ + double a1, a2; /* digital filter coefficients, denominator */ + double b0, b1, b2; /* digital filter coefficients, numerator */ }; |