diff options
Diffstat (limited to 'ym2612.c')
| -rw-r--r-- | ym2612.c | 6 |
1 files changed, 2 insertions, 4 deletions
@@ -128,9 +128,7 @@ void ym_adjust_master_clock(ym2612_context * context, uint32_t master_clock) #define log2(x) (log(x)/log(2)) #endif -#define LOWPASS_CUTOFF 3390 - -void ym_init(ym2612_context * context, uint32_t sample_rate, uint32_t master_clock, uint32_t clock_div, uint32_t sample_limit, uint32_t options) +void ym_init(ym2612_context * context, uint32_t sample_rate, uint32_t master_clock, uint32_t clock_div, uint32_t sample_limit, uint32_t options, uint32_t lowpass_cutoff) { static uint8_t registered_finalize; dfopen(debug_file, "ym_debug.txt", "w"); @@ -141,7 +139,7 @@ void ym_init(ym2612_context * context, uint32_t sample_rate, uint32_t master_clo context->clock_inc = clock_div * 6; ym_adjust_master_clock(context, master_clock); - double rc = (1.0 / (double)LOWPASS_CUTOFF) / (2.0 * M_PI); + double rc = (1.0 / (double)lowpass_cutoff) / (2.0 * M_PI); double dt = 1.0 / ((double)master_clock / (double)(context->clock_inc * NUM_OPERATORS)); double alpha = dt / (dt + rc); context->lowpass_alpha = (int32_t)(((double)0x10000) * alpha); |