Mercurial > repos > blastem
diff ym2612.c @ 522:6a14c5a95648
Adjust PSG and YM-2612 volume to be closer to the real console
| author | Michael Pavone <pavone@retrodev.com> |
|---|---|
| date | Tue, 11 Feb 2014 12:52:28 -0800 |
| parents | 7565ec2ac652 |
| children | 7df7f493b3b6 |
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--- a/ym2612.c Tue Feb 11 12:45:43 2014 -0800 +++ b/ym2612.c Tue Feb 11 12:52:28 2014 -0800 @@ -232,7 +232,8 @@ } } -#define YM_VOLUME_DIVIDER 2 +#define YM_VOLUME_MULTIPLIER 2 +#define YM_VOLUME_DIVIDER 3 #define YM_MOD_SHIFT 1 #define TIMER_A_MAX 1023 @@ -455,7 +456,7 @@ if (value & 0x2000) { value |= 0xC000; } - dfprintf(debug_file, "channel %d output: %d\n", channel, value / YM_VOLUME_DIVIDER); + dfprintf(debug_file, "channel %d output: %d\n", channel, (value * YM_VOLUME_MULTIPLIER) / YM_VOLUME_DIVIDER); } } //puts("operator update done"); @@ -485,10 +486,10 @@ fwrite(&value, sizeof(value), 1, context->channels[i].logfile); } if (context->channels[i].lr & 0x80) { - context->audio_buffer[context->buffer_pos] += value / YM_VOLUME_DIVIDER; + context->audio_buffer[context->buffer_pos] += (value * YM_VOLUME_MULTIPLIER) / YM_VOLUME_DIVIDER; } if (context->channels[i].lr & 0x40) { - context->audio_buffer[context->buffer_pos+1] += value / YM_VOLUME_DIVIDER; + context->audio_buffer[context->buffer_pos+1] += (value * YM_VOLUME_MULTIPLIER) / YM_VOLUME_DIVIDER; } } context->buffer_pos += 2;