Various volume level adjustements to avoid hitting limiter. (#8553)

* Adjusted levels in mustache.cpp, metlfrzr.cpp, xyonix.cpp, labybug.cpp, pgm.cpp, terracre.cpp, boogwing.cpp, astrocde.cpp, and gottlieb.cpp.
* Re-balanced some Votrax stuff, attempting to keep the chip output between +/-1.0.

src/devices/sound/votrax.cpp

@@ -633,7 +633,7 @@ stream_buffer::sample_t votrax_sc01_device::analog_calc()
 	vn = apply_filter(m_vn_5, m_vn_6, m_fx_a, m_fx_b);
 	shift_hist(vn, m_vn_6);
 
-	return vn*1.5;
+	return vn*0.35;
 }
 
 /*

src/mame/audio/gottlieb.cpp

@@ -13,7 +13,6 @@
 #include "emu.h"
 #include "audio/gottlieb.h"
 
-#include "sound/dac.h"
 #include "machine/input_merger.h"
 
 
@@ -171,6 +170,7 @@ gottlieb_sound_r1_device::gottlieb_sound_r1_device(
 		uint32_t clock)
 	: device_t(mconfig, type, tag, owner, clock)
 	, device_mixer_interface(mconfig, *this)
+	, m_dac(*this, "dac")
 	, m_riot(*this, "riot")
 {
 }
@@ -256,7 +256,7 @@ void gottlieb_sound_r1_device::device_add_mconfig(machine_config &config)
 	m_riot->irq_callback().set_inputline("audiocpu", M6502_IRQ_LINE);
 
 	// sound devices
-	DAC_8BIT_R2R(config, "dac", 0).add_route(ALL_OUTPUTS, *this, 0.25); // unknown DAC
+	DAC_8BIT_R2R(config, m_dac, 0).add_route(ALL_OUTPUTS, *this, 0.25); // unknown DAC
 }
 
 
@@ -306,10 +306,13 @@ void gottlieb_sound_r1_with_votrax_device::device_add_mconfig(machine_config &co
 {
 	gottlieb_sound_r1_device::device_add_mconfig(config);
 
+	m_dac->reset_routes();
+	m_dac->add_route(ALL_OUTPUTS, *this, 0.20);
+
 	// add the VOTRAX
 	VOTRAX_SC01(config, m_votrax, 720000);
 	m_votrax->ar_callback().set("nmi", FUNC(input_merger_device::in_w<1>));
-	m_votrax->add_route(ALL_OUTPUTS, *this, 0.5);
+	m_votrax->add_route(ALL_OUTPUTS, *this, 0.80);
 }
 
 

src/mame/audio/gottlieb.h

@@ -10,6 +10,7 @@
 #include "machine/mos6530.h"
 #include "machine/6532riot.h"
 #include "sound/ay8910.h"
+#include "sound/dac.h"
 #include "sound/sp0250.h"
 #include "sound/votrax.h"
 
@@ -88,6 +89,9 @@ class gottlieb_sound_r1_device : public device_t, public device_mixer_interface
 
 	virtual void gottlieb_sound_r1_map(address_map &map);
 
+protected:
+	required_device<dac_8bit_r2r_device> m_dac;
+
 private:
 	// devices
 	required_device<riot6532_device> m_riot;

src/mame/drivers/astrocde.cpp

@@ -563,7 +563,7 @@ void astrocde_state::port_map_mono_pattern(address_map &map)
 void astrocde_state::port_map_stereo_pattern(address_map &map)
 {
 	port_map_mono_pattern(map);
-	map(0x0050, 0x0058).select(0xff00).w("astrocade2", FUNC(astrocade_io_device::write));
+	map(0x0050, 0x0058).select(0xff00).w(m_astrocade_sound2, FUNC(astrocade_io_device::write));
 }
 
 
@@ -1236,9 +1236,9 @@ void astrocde_state::astrocade_stereo_sound(machine_config &config)
 	ASTROCADE_IO(config, m_astrocade_sound1, ASTROCADE_CLOCK/4);
 	m_astrocade_sound1->si_cb().set(FUNC(astrocde_state::input_mux_r));
 	m_astrocade_sound1->so_cb<0>().set("watchdog", FUNC(watchdog_timer_device::reset_w));
-	m_astrocade_sound1->add_route(ALL_OUTPUTS, "lspeaker", 1.0);
+	m_astrocade_sound1->add_route(ALL_OUTPUTS, "lspeaker", 1.00);
 
-	ASTROCADE_IO(config, "astrocade2", ASTROCADE_CLOCK/4).add_route(ALL_OUTPUTS, "rspeaker", 1.0);
+	ASTROCADE_IO(config, m_astrocade_sound2, ASTROCADE_CLOCK/4).add_route(ALL_OUTPUTS, "rspeaker", 1.00);
 
 	WATCHDOG_TIMER(config, "watchdog").set_vblank_count("screen", 128); // MC14024B on CPU board at U18, CLK = VERTDR, Q7 used for RESET
 }
@@ -1357,9 +1357,15 @@ void astrocde_state::wow(machine_config &config)
 	m_astrocade_sound1->so_cb<5>().set("outlatch", FUNC(cd4099_device::write_nibble_d0));
 	m_astrocade_sound1->so_cb<7>().set(FUNC(astrocde_state::votrax_speech_w));
 
+	m_astrocade_sound1->reset_routes();
+	m_astrocade_sound1->add_route(ALL_OUTPUTS, "lspeaker", 0.35);
+
+	m_astrocade_sound2->reset_routes();
+	m_astrocade_sound2->add_route(ALL_OUTPUTS, "lspeaker", 0.35);
+
 	VOTRAX_SC01(config, m_votrax, 756000);
 
-	m_votrax->add_route(0, "f1", 0.85);
+	m_votrax->add_route(0, "f1", 0.65);
 	FILTER_RC(config, "f1").set_lowpass(110e3, 560e-12).add_route(0, "f2", 1.00);
 	FILTER_RC(config, "f2").set_lowpass(110e3, 560e-12).add_route(0, "f3", 1.00);
 	FILTER_RC(config, "f3").set_lowpass(110e3, 560e-12).add_route(0, "f4", 1.00);
@@ -1409,12 +1415,12 @@ void astrocde_state::gorf(machine_config &config)
 	m_astrocade_sound1->so_cb<5>().set("outlatch", FUNC(cd4099_device::write_nibble_d0));
 	m_astrocade_sound1->so_cb<6>().set("lamplatch", FUNC(cd4099_device::write_nibble_d0));
 	m_astrocade_sound1->so_cb<7>().set(FUNC(astrocde_state::votrax_speech_w));
-	m_astrocade_sound1->add_route(ALL_OUTPUTS, "upper", 1.0);
+	m_astrocade_sound1->add_route(ALL_OUTPUTS, "upper", 0.45);
 
-	ASTROCADE_IO(config, "astrocade2", ASTROCADE_CLOCK/4).add_route(ALL_OUTPUTS, "lower", 1.0);
+	ASTROCADE_IO(config, m_astrocade_sound2, ASTROCADE_CLOCK/4).add_route(ALL_OUTPUTS, "lower", 0.45);
 
 	VOTRAX_SC01(config, m_votrax, 756000);
-	m_votrax->add_route(ALL_OUTPUTS, "upper", 0.85);
+	m_votrax->add_route(ALL_OUTPUTS, "upper", 0.55);
 }
 
 void astrocde_state::robby(machine_config &config)

src/mame/drivers/boogwing.cpp

@@ -396,16 +396,16 @@ void boogwing_state::boogwing(machine_config &config)
 	ym2151_device &ymsnd(YM2151(config, "ymsnd", SOUND_XTAL/9));
 	ymsnd.irq_handler().set_inputline(m_audiocpu, 1); /* IRQ2 */
 	ymsnd.port_write_handler().set(FUNC(boogwing_state::sound_bankswitch_w));
-	ymsnd.add_route(0, "lspeaker", 0.80);
-	ymsnd.add_route(1, "rspeaker", 0.80);
+	ymsnd.add_route(0, "lspeaker", 0.32);
+	ymsnd.add_route(1, "rspeaker", 0.32);
 
 	OKIM6295(config, m_oki[0], SOUND_XTAL/32, okim6295_device::PIN7_HIGH);
-	m_oki[0]->add_route(ALL_OUTPUTS, "lspeaker", 1.40);
-	m_oki[0]->add_route(ALL_OUTPUTS, "rspeaker", 1.40);
+	m_oki[0]->add_route(ALL_OUTPUTS, "lspeaker", 0.56);
+	m_oki[0]->add_route(ALL_OUTPUTS, "rspeaker", 0.56);
 
 	OKIM6295(config, m_oki[1], SOUND_XTAL/16, okim6295_device::PIN7_HIGH);
-	m_oki[1]->add_route(ALL_OUTPUTS, "lspeaker", 0.30);
-	m_oki[1]->add_route(ALL_OUTPUTS, "rspeaker", 0.30);
+	m_oki[1]->add_route(ALL_OUTPUTS, "lspeaker", 0.12);
+	m_oki[1]->add_route(ALL_OUTPUTS, "rspeaker", 0.12);
 }
 
 /**********************************************************************************/

src/mame/drivers/ladybug.cpp

@@ -852,8 +852,8 @@ void ladybug_state::ladybug(machine_config &config)
 	/* sound hardware */
 	SPEAKER(config, "mono").front_center();
 
-	SN76489(config, "sn1", 4_MHz_XTAL).add_route(ALL_OUTPUTS, "mono", 1.0);
-	SN76489(config, "sn2", 4_MHz_XTAL).add_route(ALL_OUTPUTS, "mono", 1.0);
+	SN76489(config, "sn1", 4_MHz_XTAL).add_route(ALL_OUTPUTS, "mono", 0.5);
+	SN76489(config, "sn2", 4_MHz_XTAL).add_route(ALL_OUTPUTS, "mono", 0.5);
 }
 
 void dorodon_state::dorodon(machine_config &config)
@@ -893,11 +893,11 @@ void mrsdyna_state::mrsdyna(machine_config &config)
 	/* sound hardware */
 	SPEAKER(config, "mono").front_center();
 
-	SN76489(config, "sn1", 4000000).add_route(ALL_OUTPUTS, "mono", 1.0);
-	SN76489(config, "sn2", 4000000).add_route(ALL_OUTPUTS, "mono", 1.0);
-	SN76489(config, "sn3", 4000000).add_route(ALL_OUTPUTS, "mono", 1.0);
-	SN76489(config, "sn4", 4000000).add_route(ALL_OUTPUTS, "mono", 1.0);
-	SN76489(config, "sn5", 4000000).add_route(ALL_OUTPUTS, "mono", 1.0);
+	SN76489(config, "sn1", 4000000).add_route(ALL_OUTPUTS, "mono", 0.2);
+	SN76489(config, "sn2", 4000000).add_route(ALL_OUTPUTS, "mono", 0.2);
+	SN76489(config, "sn3", 4000000).add_route(ALL_OUTPUTS, "mono", 0.2);
+	SN76489(config, "sn4", 4000000).add_route(ALL_OUTPUTS, "mono", 0.2);
+	SN76489(config, "sn5", 4000000).add_route(ALL_OUTPUTS, "mono", 0.2);
 }
 
 void sraider_state::sraider(machine_config &config)
@@ -931,11 +931,11 @@ void sraider_state::sraider(machine_config &config)
 	/* sound hardware */
 	SPEAKER(config, "mono").front_center();
 
-	SN76489(config, "sn1", 4000000).add_route(ALL_OUTPUTS, "mono", 1.0);
-	SN76489(config, "sn2", 4000000).add_route(ALL_OUTPUTS, "mono", 1.0);
-	SN76489(config, "sn3", 4000000).add_route(ALL_OUTPUTS, "mono", 1.0);
-	SN76489(config, "sn4", 4000000).add_route(ALL_OUTPUTS, "mono", 1.0);
-	SN76489(config, "sn5", 4000000).add_route(ALL_OUTPUTS, "mono", 1.0);
+	SN76489(config, "sn1", 4000000).add_route(ALL_OUTPUTS, "mono", 0.2);
+	SN76489(config, "sn2", 4000000).add_route(ALL_OUTPUTS, "mono", 0.2);
+	SN76489(config, "sn3", 4000000).add_route(ALL_OUTPUTS, "mono", 0.2);
+	SN76489(config, "sn4", 4000000).add_route(ALL_OUTPUTS, "mono", 0.2);
+	SN76489(config, "sn5", 4000000).add_route(ALL_OUTPUTS, "mono", 0.2);
 }
 
 

src/mame/drivers/metlfrzr.cpp

@@ -406,8 +406,8 @@ void metlfrzr_state::metlfrzr(machine_config &config)
 
 	ym2151_device &ymsnd(YM2151(config, "ymsnd", XTAL(14'318'181) / 4));    /* 3.579545 MHz */
 	ymsnd.irq_handler().set("t5182", FUNC(t5182_device::ym2151_irq_handler));
-	ymsnd.add_route(0, "mono", 1.0);
-	ymsnd.add_route(1, "mono", 1.0);
+	ymsnd.add_route(0, "mono", 0.5);
+	ymsnd.add_route(1, "mono", 0.5);
 }
 
 

src/mame/drivers/mustache.cpp

@@ -190,8 +190,8 @@ void mustache_state::mustache(machine_config &config)
 
 	ym2151_device &ymsnd(YM2151(config, "ymsnd", 14.318181_MHz_XTAL/4));
 	ymsnd.irq_handler().set("t5182", FUNC(t5182_device::ym2151_irq_handler));
-	ymsnd.add_route(0, "mono", 1.0);
-	ymsnd.add_route(1, "mono", 1.0);
+	ymsnd.add_route(0, "mono", 0.5);
+	ymsnd.add_route(1, "mono", 0.5);
 }
 
 ROM_START( mustache )

src/mame/drivers/pgm.cpp

@@ -523,7 +523,7 @@ void pgm_state::pgmbase(machine_config &config)
 
 	ICS2115(config, m_ics, 33.8688_MHz_XTAL);
 	m_ics->irq().set_inputline("soundcpu", 0);
-	m_ics->add_route(ALL_OUTPUTS, "mono", 5.0);
+	m_ics->add_route(ALL_OUTPUTS, "mono", 1.0);
 }
 
 void pgm_state::pgm(machine_config &config)

src/mame/drivers/terracre.cpp

@@ -482,10 +482,10 @@ void terracre_state::ym3526(machine_config &config)
 
 	GENERIC_LATCH_8(config, m_soundlatch);
 
-	YM3526(config, "ymsnd", XTAL(16'000'000)/4).add_route(ALL_OUTPUTS, "speaker", 1.0);     // 4MHz verified on PCB
+	YM3526(config, "ymsnd", XTAL(16'000'000)/4).add_route(ALL_OUTPUTS, "speaker", 0.5);     // 4MHz verified on PCB
 
-	DAC_8BIT_R2R(config, "dac1", 0).add_route(ALL_OUTPUTS, "speaker", 0.5); // unknown DAC
-	DAC_8BIT_R2R(config, "dac2", 0).add_route(ALL_OUTPUTS, "speaker", 0.5); // unknown DAC
+	DAC_8BIT_R2R(config, "dac1", 0).add_route(ALL_OUTPUTS, "speaker", 0.25); // unknown DAC
+	DAC_8BIT_R2R(config, "dac2", 0).add_route(ALL_OUTPUTS, "speaker", 0.25); // unknown DAC
 }
 
 void terracre_state::ym2203(machine_config &config)
@@ -496,10 +496,10 @@ void terracre_state::ym2203(machine_config &config)
 	config.device_remove("ymsnd");
 
 	ym2203_device &ym1(YM2203(config, "ym1", XTAL(16'000'000)/4));     // 4MHz verified on PCB
-	ym1.add_route(0, "speaker", 0.2);
-	ym1.add_route(1, "speaker", 0.2);
-	ym1.add_route(2, "speaker", 0.2);
-	ym1.add_route(3, "speaker", 0.4);
+	ym1.add_route(0, "speaker", 0.1);
+	ym1.add_route(1, "speaker", 0.1);
+	ym1.add_route(2, "speaker", 0.1);
+	ym1.add_route(3, "speaker", 0.2);
 }
 
 void terracre_state::amazon_base(machine_config &config)

src/mame/drivers/xyonix.cpp

@@ -430,8 +430,8 @@ void xyonix_state::xyonix(machine_config &config)
 	// sound hardware
 	SPEAKER(config, "mono").front_center();
 
-	SN76496(config, "sn1", 16000000/4).add_route(ALL_OUTPUTS, "mono", 1.0);
-	SN76496(config, "sn2", 16000000/4).add_route(ALL_OUTPUTS, "mono", 1.0);
+	SN76496(config, "sn1", 16000000/4).add_route(ALL_OUTPUTS, "mono", 0.5);
+	SN76496(config, "sn2", 16000000/4).add_route(ALL_OUTPUTS, "mono", 0.5);
 }
 
 /* ROM Loading ***************************************************************/

src/mame/includes/astrocde.h

@@ -41,6 +41,7 @@ class astrocde_state : public driver_device
 		m_maincpu(*this, "maincpu"),
 		m_votrax(*this, "votrax"),
 		m_astrocade_sound1(*this, "astrocade1"),
+		m_astrocade_sound2(*this, "astrocade2"),
 		m_videoram(*this, "videoram"),
 		m_protected_ram(*this, "protected_ram"),
 		m_nvram(*this, "nvram"),
@@ -56,6 +57,7 @@ class astrocde_state : public driver_device
 	required_device<cpu_device> m_maincpu;
 	optional_device<votrax_sc01_device> m_votrax;
 	optional_device<astrocade_io_device> m_astrocade_sound1;
+	optional_device<astrocade_io_device> m_astrocade_sound2;
 	optional_shared_ptr<uint8_t> m_videoram;
 	optional_shared_ptr<uint8_t> m_protected_ram;
 	optional_shared_ptr<uint8_t> m_nvram;