Sound ===== The *Sound* page contains settings related to the emulated machine's audio hardware. Sound card ---------- Sound card to emulate. Only cards supported by the machine's expansion buses will be listed. On machines equipped with an onboard sound chip, the *Internal* option enables the onboard sound. The *Configure* button opens a new window with settings specific to the selected sound card, such as the I/O ports, IRQ and DMA channels for ISA cards. MIDI Out Device --------------- Device to output MIDI music to, for sound cards equipped with an external MIDI output. * **None:** don't output MIDI music. * **FluidSynth:** a software soundfont synthesizer. The FluidSynth library file must be present in the 86Box directory, and a soundfont must be configured. * **Roland MT-32 Emulation:** emulate a Roland MT-32 synthesizer device. Emulation is provided by the `Munt `_ library. * **Roland CM-32L Emulation:** same as above, but emulating a Roland CM-32L instead. * **System MIDI:** output to a (configurable) host MIDI device, such as the Windows software synthesizer or a USB MIDI adapter. The *Configure* button opens a new window with settings specific to the selected output device. MIDI In Device -------------- Device to receive MIDI music from, for sound cards equipped with an external MIDI input. * **None:** don't receive MIDI music. * **System MIDI:** receive from a (configurable) host MIDI device, such as a USB MIDI adapter. The *Configure* button opens a new window with settings specific to the selected input device. Standalone MPU-401 ------------------ Emulate a standalone **Roland MIDI Processing Unit** ISA card, which allows for MIDI input and output without a MPU-401-equipped sound card. The I/O port and IRQ can be configured through the *Configure* button. Innovation SSI-2001 ------------------- Emulate the **Innovation SSI-2001** ISA sound card, based on the MOS Technology 6581 chip (commonly known as the Commodore SID) and supported by a limited number of games. SID emulation is provided by the `reSID `_ library. CMS / Game Blaster ------------------ Emulate the **Creative Music System** or **Game Blaster** ISA sound card, based on dual Philips SAA1099 sound chips and supported by some games. Gravis Ultrasound ----------------- Emulate the **Gravis UltraSound** ISA sound card. The type of UltraSound to emulate (Classic or MAX), I/O port and amount of onboard RAM can be configured through the *Configure* button. Use FLOAT32 sound ----------------- Use the 32-bit floating point (instead of 16-bit integer) data type for audio output, which is less prone to clipping. Try disabling this option if you're getting no audio output at all.