The sample rate of a device must never exceed the rate setting under the mixer heading, as this will cause undefined behavior.ĭOSBox can emulate the following devices. Note that almost all sound devices have a configuration setting to enable or disable them, as well as one for the sample rate of the emulation. Each emulatable device has its own configuration section. (The one notable exception being routing music and sound effects through different devices, which was common for people with both a Sound Blaster and a separate MIDI device.) DOSBox also makes sure the appropriate environment variables are defined for each device, so game audio device auto-detection usually works, if the game attempts it.ĭOSBox's output to your real computer's sound system is configured under the mixer category. A game will likely only use a single device at a time anyway. Sound devices that are not in use do not use many resources, so you don't gain much in the way of performance by reducing the number of sound devices enabled. Most of the sound devices are capable of existing inside the same computer at the same time, so when configuring DOSBox sound you need to think of them as separate devices that can be enabled or disabled. Thankfully, DOSBox can emulate all the most popular sound systems of the DOS era, so one can usually find something that sounds good. Also, different devices supported different features, resulting in games that could sound very different (maybe high-quality music on one card, but voice-acting on another) depending on the hardware available. And the game had to be configured with the memory addresses of the hardware by hand. If a game did not support a user's audio hardware, no sound was possible. Software had to include separate support for each sound device it wanted to give the users the option of using. Unlike Windows, DOS did not keep a list of the system's sound devices, nor did it expose generic drivers for them. Sound was sometimes difficult to set up in the DOS era. By emulating the hardware the user can utilize whatever audio device they have installed in their PC, while the DOS Game or Application believes it is running on the emulated hardware. DOSBox is capable of emulating several sound devices.
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