From 6ed58ab3da90a6987bf3b8d51c7db27ed1513460 Mon Sep 17 00:00:00 2001 From: Michael Pavone Date: Tue, 11 Feb 2014 12:52:28 -0800 Subject: Adjust PSG and YM-2612 volume to be closer to the real console --- ym2612.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'ym2612.c') diff --git a/ym2612.c b/ym2612.c index feb3a18..4943cee 100644 --- a/ym2612.c +++ b/ym2612.c @@ -232,7 +232,8 @@ void ym_init(ym2612_context * context, uint32_t sample_rate, uint32_t master_clo } } -#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 @@ void ym_run(ym2612_context * context, uint32_t to_cycle) 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 @@ void ym_run(ym2612_context * context, uint32_t to_cycle) 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; -- cgit v1.2.3