Advanced sound options

Menus: Main menu → Options menu → Sound options

The advanced sound options menu in Doom II.

The advanced sound options menu allows to fine-tune certain sound system settings. Its MENUDEF name is AdvSoundOptions and it can be summoned with the menu_advsound console command.

• Sample rate (Default/4000 Hz/8000 Hz/11025 Hz/22050 Hz/32000 Hz/44100 Hz/48000 Hz)

snd_samplerate

Chooses which sample rate to use. The default uses the system's default sample rate.

OPL synthesis

• Number of emulated OPL chips (1—8 by 1 increments)

opl_numchips

This allows to choose the number of virtual OPL chips used in the OPL emulator when rendering MIDI songs. (Raw OPL is still limited to two chips at most.) Using only one chip can make emulation up to twice as fast, but it is not really enough to play Doom's music, and most old sound cards had either two OPL2 chips or one OPL3 chip (which acts like two OPL2 chips).

• Full MIDI stero panning (On/Off)

opl_fullpan

The OPL emulators in ZDoom support all 127 panning positions allowed by the MIDI standard. However, actual OPL chips only supported mono (OPL2) or had stereo limited to three panning positions (OPL3). This option allows to enable or disable full stereo panning when using OPL emulation.

• OPL Emulator Core (MAME OPL2/DOSBox OPL3/Java OPL3/Nuked OPL3)

opl_core

This allows to choose which OPL emulator core to use. The MAME core corresponds to a Yamaha YM3812 (OPL2), while the other cores correspond to Yamaha YMF262 (OPL3).

libADLMIDI

• OPL Emulator Core (DOSBox OPL3/Nuked OPL3/Nuked OPL3 v1.7.4/Opal OPL3/Java OPL3)

adl_emulator_id

This allows to choose which libADLMIDI core to use. All cores correspond to Yamaha YMF262 (OPL3).

• Run emulator at PCM rate

adl_run_at_pcm_rate

This allows to increase performance of DOSBox core by reducing of running cycles which will also decrease accuracy of the sound (some percussions will be affected).

• Number of emulated OPL chips (1—32 by 1 increments)

adl_chips_count

This allows to choose the number of virtual OPL chips used in the libADLMIDI when rendering MIDI songs. Using only one chip can make emulation up to twice as fast, but it is not really enough to play Doom's music, and most old sound cards had either two OPL2 chips or one OPL3 chip (which acts like two OPL2 chips).

• Full MIDI stero panning (On/Off)

adl_fullpan

The libADLMIDI in GZDoom support all 127 panning positions allowed by the MIDI standard. However, actual OPL chips only supported mono (OPL2) or had stereo limited to three panning positions (OPL3). This option allows to enable or disable full stereo panning when using libADLMIDI.

• Volume model (Auto/Generic/Native OPL3/DMX/Apogee/9x/AIL/HMI)

adl_volume_model

This allows to choose which volume level formula will be used to convert MIDI volume into the scale of OPL3 chip.

• OPL Bank

adl_bank

This allows to choose one of embedded libADLMIDI's FM banks.

• Use custom WOPL bank

adl_use_custom_bank

This allows to turn libADLMIDI into use of custom bank file instead of embedded one. Note: If custom bank wasn't choosen or it's where broken, the embedded bank will be used as the fallback.

• WOPL Bank file

adl_custom_bank

File path to custom WOPL bank will be used by libADLMIDI when custom bank mode is turned on.

libOPNMIDI

• OPN2 Emulator Core (MAME YM2612/Nuked OPN2/GENS 2.10/Neko Project II Kai/MAME YM2608/PMDWin OPNA)

opn_emulator_id

This allows choosing which libOPNMIDI core to use. All cores correspond to Yamaha YM2612 (OPN2) amd Yamaha YM2608 (OPNA).

• Run emulator at PCM rate

opn_run_at_pcm_rate

This allows to increase performance of Mame YM2612 and GENS cores by reducing of running cycles which will also decrease accuracy of the sound (some percussions will be affected).

• Number of emulated OPN2 chips (1—32 by 1 increments)

opn_chips_count

This allows to choose the number of virtual OPN chips used in the libOPNMIDI when rendering MIDI songs. Using only one chip can make emulation up to twice as fast, but it is not really enough to play Doom's music. Note that each chip gives 6 voices polyphony, therefore it's recommended to use at least two chips to have proper music playing.

• Full MIDI stereo panning (On/Off)

opn_fullpan

The libOPNMIDI in GZDoom support all 127 panning positions allowed by the MIDI standard. However, actual OPN2 chips only stereo limited to three panning positions. This option allows to enable or disable full stereo panning when using libOPNMIDI.

• Use custom WOPN bank

opn_use_custom_bank

This allows turning libOPNMIDI into the use of a custom bank file instead of an embedded one. Note: If the custom bank wasn't chosen or it's where broken, the embedded bank will be used as the fallback.

• WOPN Bank file

opn_custom_bank

File path to custom WOPN bank will be used by libOPNMIDI when custom bank mode is turned on.

GUS Emulation

• GUS config file (text field)

midi_config

File path to the fallback Gravis Ultrasound or TiMidity configuration file, used if DMXGUS is absent or not parsed.

• MIDI voices (16—256 by 4 increments)

midi_voices

How many voices are available to the GUS emulator.

• Read DMXGUS lumps (On/Off)

midi_dmxgus

Whether DMXGUS lumps should be parsed.

• GUS memory size (Unlimited/256K/512K/768K/1024K)

gus_memsize

Which level of patch remapping should be used. If you want to use patch remapping, be warned that generally, only the 1024K hardware was considered.

FluidSynth

• Patch set (text field)

fluid_patchset

File paths to the sound fonts used by FluidSynth. These can be either absolute paths, or just the filename if the patch resides in one of the directories listed in the [SoundfontSearch.Directories] section of the ini. The .sf2 extension can be safely omitted. Multiple patches can be specified by delimiting the paths with a ';' on Windows, or a ':' on other platforms.

• Gain (0—10 by 0.5 increments)

fluid_gain

Which amount of gain is applied to the rendered MIDI sound.

• Reverb (On/Off)

fluid_reverb

Whether FluidSynth applies reverberation to the rendered MIDI sound. This is independent of the in-game reverb environments.

• MIDI voices (16—4096 by 16 increments)

fluid_voices

How many voices are available simultaneously for playing MIDI instruments. 16 is the minimum required by the General MIDI standard.

TiMidity++

• Path for executable (text field)

timidity_exe

File path to the TiMidity executable.

• Reverb (On/Off)

timidity_reverb

Whether TiMidity++ applies reverberation to the rendered MIDI sound. This is independent of the in-game reverb environments.

• Chorus (On/Off)

timidity_chorus

Whether TiMidity++ should apply a chorus effect to the rendered MIDI sound.

• Relative volume (0—4 by 0.2 increments)

timidity_mastervolume

Adjusts the volume of the MIDI sound produced by TiMidity++. This is combined with the general music volume.

WilMIDI

• WildMidi config file (text field)

wildmidi_config

File path to the WildMIDI configuration file.

• Reverb (On/Off)

wildmidi_reverb

Whether WildMIDI applies reverberation to the rendered MIDI sound. This is independent of the in-game reverb environments.