The ES1946 includes an I2S Zoom Video port interface that allows playback of MPEG audio, using the 16-bit stereo music DAC, thus reducing the total audio solution chip count. The ES1946 incorporates a microcontroller, ESFMTM music synthesizer, 16-bit stereo wave ADC and DAC, 16-bit stereo music DAC, MPU-401 UART mode serial port, I2S Zoom Video port, serial port interface to external wavetable music synthesizer, dual game port, hardware master volume control, direct memory access (DMA) control logic with FIFO, and PCI bus interface logic. There are three stereo inputs (typically linein, CD audio, and auxiliary line) and a mono microphone input. The ES1946 also incorporates Spatializer VBXTM technology, provided by Desper Products, Inc., a subsidiary of Spatializer Audio Laboratories, Inc. This processor expands the stereo sound field emitted by two speakers to create a resonant 3D sound environment.