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Spectrum of generated sounds getting near samples.

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Still issues with LS123 durations
For skip, samples are twice as short
For run, samples are twice as long
This commit is contained in:
Couriersud 2009-01-25 16:17:31 +00:00
parent ceb0c0ac4a
commit 6c653b943e
2 changed files with 13 additions and 8 deletions
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6
src/emu/sound/disc_dev.c
View File

@ -1629,7 +1629,11 @@ static DISCRETE_STEP(dsd_ls624)
node->output[0] = ((double)lst) * (1.0 + context->remain / sample_t) - ((double)context->state) * context->remain / sample_t;
break;
case DISC_LS624_OUT_LOGIC:
node->output[0] = context->state;
/* filter out randomness */
if (cntf + cntr > 1)
node->output[0] = 1;
else
node->output[0] = context->state;
break;
case DISC_LS624_OUT_COUNT_F:
node->output[0] = cntf;

15
src/mame/audio/mario.c
View File

@ -163,8 +163,8 @@ static DISCRETE_SOUND_START(mario)
DISCRETE_LS123(NODE_10, DS_SOUND0_INV, MR_R17, MR_C14)
DISCRETE_RCFILTER(NODE_11, 1, NODE_10, MR_R6, MR_C3)
DISCRETE_74LS624( NODE_12, 1, NODE_11, VSS, MR_C6, DISC_LS624_OUT_ENERGY)
DISCRETE_74LS624( NODE_13, 1, NODE_11, VSS, MR_C17, DISC_LS624_OUT_ENERGY)
DISCRETE_74LS624( NODE_12, 1, NODE_11, VSS, MR_C6, DISC_LS624_OUT_LOGIC)
DISCRETE_74LS624( NODE_13, 1, NODE_11, VSS, MR_C17, DISC_LS624_OUT_LOGIC)
DISCRETE_LOGIC_XOR(NODE_14, 1, NODE_12, NODE_13)
DISCRETE_LOGIC_AND(NODE_15, 1, NODE_14, NODE_10)
@ -176,8 +176,8 @@ static DISCRETE_SOUND_START(mario)
DISCRETE_LS123(NODE_20, DS_SOUND1_INV, MR_R18, MR_C15)
DISCRETE_RCFILTER(NODE_21, 1, NODE_20, MR_R7, MR_C4)
DISCRETE_74LS624( NODE_22, 1, NODE_21, VSS, MR_C5, DISC_LS624_OUT_ENERGY)
DISCRETE_74LS624( NODE_23, 1, NODE_21, VSS, MR_C16, DISC_LS624_OUT_ENERGY)
DISCRETE_74LS624( NODE_22, 1, NODE_21, VSS, MR_C5, DISC_LS624_OUT_LOGIC)
DISCRETE_74LS624( NODE_23, 1, NODE_21, VSS, MR_C16, DISC_LS624_OUT_LOGIC)
DISCRETE_LOGIC_XOR(NODE_24, 1, NODE_22, NODE_23)
DISCRETE_LOGIC_AND(NODE_25, 1, NODE_24, NODE_20)
@ -195,7 +195,7 @@ static DISCRETE_SOUND_START(mario)
DISCRETE_LS123(NODE_110, DS_SOUND7_INV, MR_R61, MR_C41)
DISCRETE_TRANSFORM2(NODE_111, NODE_110, TTL_HIGH, "0!1*")
DISCRETE_RCFILTER(NODE_112, 1, NODE_111, MR_R65, MR_C44)
DISCRETE_74LS624(NODE_113, 1, NODE_112, VSS, MR_C40, DISC_LS624_OUT_ENERGY)
DISCRETE_74LS624(NODE_113, 1, NODE_112, VSS, MR_C40, DISC_LS624_OUT_LOGIC)
DISCRETE_LOGIC_XOR(NODE_115, 1, NODE_102, NODE_113)
@ -228,8 +228,9 @@ static DISCRETE_SOUND_START(mario)
*/
// EZV20 equivalent filter circuit ...
DISCRETE_CRFILTER(NODE_296,1,NODE_295, RES_K(1), CAP_U(4.7))
DISCRETE_OUTPUT(NODE_296, 32767.0/5.0 * 3 )
//DISCRETE_WAVELOG1(DS_OUT_DAC, 32767/5.0)
DISCRETE_OUTPUT(NODE_296, 32767.0/5.0 * 2)
//DISCRETE_WAVELOG2(NODE_296, 32767/5.0 * 2, DS_SOUND0_INV, 10000)
//DISCRETE_WAVELOG2(NODE_296, 32767/5.0 * 2, DS_SOUND7_INV, 10000)
DISCRETE_SOUND_END