My obsession with audio reproduction started with my first i386 PC. Back then, getting any sound out of a computer required creativity. I experimented with the internal PC speaker, directly accessing the timer IC to generate crude audio through clever PWM modulation. The results were terrible, but fascinating. Next …

I was building a Christmas set of spherical speakers just to familiarize myself with ADAU1401 Sigma DSP. And I wanted to add Bluetooth capability to the speakers so that they could receive sound data from an old Samsung Galaxy Note 10.1 in the kitchen. Granted, I have ordered some Bluetooth audio receivers, however, …