Building a sound card based on convox speech

[2017-01-04 Wed 19:30:00] speaker: Yeo Kheng Meng event: Hackware 2.6 R-2R resistor ladder 8-bit digital to analog converter need an amplifier modern peripherals have a DMA engine that fetches data from RAM need to write 8bits to the port once per 22microseconds Raymond Chen: Science Project