As the 90s progressed, arcade technology moved on. The CPS-2 and CPS-3 boards used different audio setups, and eventually, arcade games shifted toward CD-quality Red Book audio and general-purpose CPUs.
In our testing, the QSound BIOS delivered impressive audio performance, with clear and detailed sound reproduction across various audio formats. The BIOS's multi-channel audio support and 3D audio effects capabilities further enhanced the audio experience, making it ideal for gaming and multimedia applications. qsound bios
4/5 stars
While gamers were busy throwing hadoukens, audio engineers were witnessing a revolution in how sound chips processed and delivered audio. Today, let’s look back at the QSound BIOS and the hardware that brought the arcade into the "stereo" age. As the 90s progressed, arcade technology moved on
QSound used proprietary psychoacoustic algorithms (HRTF—Head-Related Transfer Function) to trick the human ear into perceiving sound sources outside the physical speaker placement. By manipulating phase, frequency, and timing, it created a virtual “soundstage” where instruments or effects seemed to come from left, right, center, and even beyond or between the speakers—all without needing two separate audio channels beyond standard stereo. The BIOS's multi-channel audio support and 3D audio
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