Audio DSP with Shannon Parks
Dave Jones, founder of Parks Audio, explains how his Puffin phono preamp uses a Cortex-M4 microcontroller to apply digital signal processing to analog vinyl records, addressing the specific needs of audiophiles. He details the engineering challenges of managing limited 64KB memory, using single-precision floating-point math, and implementing a custom pop-and-click suppression algorithm called 'Magic'. Jones also discusses his business strategy of selling directly to consumers via Amazon FBA while maintaining a single-product focus to manage his one-person factory operations.